[From the U.S. Government Printing Office, www.gpo.gov]



             TECHNIQUES FOR ESTIMATING
             MAGNITUDE AND FREQUENCY OF
             FLOODS IN SOUTH CAROLINA, 1980010
























             U.S. GEOLOGICAL SURVEY
             Water-Resources Investigations Report 91-4157



                                                                                       a .2



             f!      d            tion with the
              , Q   e in coopera
              70VTH CAROLINA DEPARTMENT OF
   G
   GB701.    HII(GHWAYS AND PUBLIC TRANSPORTATION
    B 701
    W375
  no D.91-
      415@7










                                  CONVERSION FACTORS AND VERTICAL DATU4


                   Multiply                      By                       To obtain

              inch (in.)                       2.54                  centimeter

              foot (ft)                        0.3048                meter

              mile (mi)                        1.609                 kilometer

              square mile  (Mi2)               2.590                 square kilometer

              cubic foot per second            0.02832               cubic meter per second
                 (ft3/S)

              foot per mile (ft/mi)            0.1894                meter per kilometer

              acre-foot                    1,233                     cubic meter










              Sea level: In this report, "sea level" refers to the National Geodetic

              Vertical Datum of 1929--a geodetic datum derived from a general adjustment

              of the first-order level nets of the United States and Canada, formerly

              called Sea Level Datum of 1929.










             TECHNIQUES FOR ESTIMATING MAGNITUDE AND FREQUENCY

             OF FLOODS IN SOUTH CAROLINA, 1988


             By Wladmir B. Guimaraes and Larry R. Bohnan





             U.S. GEOLOGICAL SURVEY



             Water-Resources Investigations Report 91-4157




















             Prepared in cooperation with the
             SOUTH CAROLINA DEPARTMENT OF HIGHWAYS
             AND PUBLIC TRANSPORTATION

















        co
        M
        C7)                            Columbia, South Carolina
                          LIBRARY                1992
                        NOAA/CcRii
                     1990 H013SON AVE.
                    C"A-9- SC 29408-2623










                                    U.S. DEPARTMENT OF THE  INTERIOR
                                      MANUEL LUJANv JR., Secretary



                                         U.S. GEOLOGICAL SURVEY
                                        Dallas L. Peck, Director






































             For additional information                     Copies of this report may be
             write to:                                      purchased from:

             District Chief                                 U.S. Geological Survey
             U.S. Geological Survey                         Books and Open-File Reports Section
             Stephenson Center-Suite 129                    Federal Center
             720 Gracern Road                               Box 25425
             Columbia, SC 29210                             Denver, CO 80225











                                                 CONTENTS
                                                                                             Page

             Abstract   .............................................................          1


             Introduction    .........................................................         1
                   Purpose and scope    ...............................................        2
                   Previous investigations    .........................................        2
                   Description of study area    .......................................        3

             Observed flood data   ..................................................          5

             Synthesized flood data     ...............................................        6

             Method of flood-frequency analysis at gaging stations       ................      6

             Method of regionalization     ............................................       10

             Flood frequency at ungaged sites on*streams draining
               one physiographic province     .........................................       13
                   Accuracy of equations    ...........................................       20
                   Limitations  ..........                                                    20
                   Application of regionai*eq     ions   ...............................      22
                   Maximum floods of record    ........................................       22

             Flood frequency at ungaged sites on streams draining more
               than one physiographic province     ....................................       25

             Flood frequency at or near a gaged site on the.same streams in one
               physiographic province     .............................................       25

             Flood frequency at gaged sites on streams draining more
               than one physiographic province     ....................................       27
                   Broad River   ......................................................       29
                   Little Pee Dee River    ............................................       32
                   Lynches River  ...................................................         33
                   Edisto River  ....................................................         34
             Flood frequency at gaged sites on regulated streams       ...................    34
                   Pee Dee River  ...................................................         36
                   Catawba River  ...................................................         37
                   Wateree River  ...................................................         38
                   Saluda River  ....................................................         38
                   Congaree River  ..................................................         39
                   Santee River  ....................................................         39
                   Savannah River  ..................................................         40
                   Pacolet River  ...................................................         41

             Frequency of storm tides along the South Carolina coast       ..............     41

             Summary   ...............................................................        42

             Selected references   ..................................................         43

             Supplemental data   ....................................................         45











                                              ILLUSTRATIONS
                                                                                                 Page

                Figure 1. Map showing physiographic provinces and locations
                               of streamflow gaging stations in South Carolina
                               and parts of North Carolina and Georgia       ................       4

                     2-11. Graphs showing:
                              2. Flood-frequency relation for Little Pee Dee River
                                     at Galivants Ferry    ................................       10

                              3. Relation between drainage area and 100-year
                                     discharge for stations on streams draining
                                     the Piedmont physiographic province in South
                                     Carolina, North Carolina, and Georgia      .............     14

                              4. Relation between drainage area and flood discharge
                                     for selected frequencies for stations on
                                     streams draining the lower Coastal Plain
                                     physiographic province     ............................      16

                              5. Relation between drainage area and flood discharge
                                     for selected frequencies for stations on
                                     streams draining the upper Coastal Plain
                                     physiographic province     ............................      17

                              6. Relation between drainage area and flood discharge
                                     for selected frequencies for stations on streams
                                     draining the Piedmont physiographic province       ......    18

                              7. Relation between drainage area and flood discharge
                                     for selected frequencies for stations on streams
                                     draining the Blue Ridge physiographic province ....          19

                              8. Relation between drainage area and observed maximum
                                     flood discharge for South Carolina stations and
                                     the regional relations for the 100- and 500-year
                                     floods at ungaged sites on streams draining the
                                     lower Coastal Plain physiographic province       ........    23

                              9. Relation between drainage area and observed maximum
                                     flood discharge for South Carolina stations and
                                     the regional relations for the 100- and 500-year
                                     floods at ungaged sites on streams draining the
                                     upper Coastal Plain physiographic province       ........    23

                             10. Relation between drainage area and observed maximum
                                     flood discharge for South Carolina stations and
                                     the regional relations for the 100- and 500-year
                                     floods at ungaged sites on streams draining the
                                     Piedmont physiographic province     ...................      24





                                                         iv











              ILLUSTRATIONS--Continued



                                                                                             Page

                   2-11. Graphs showing:

                           11. Relation between drainage area and observed maximum
                                   flood discharge for South Carolina stations and
                                   the regional relations for the 100- and 500-year
                                   floods at ungaged sites on streams draining the
                                   Blue Ridge physiographic province      .................      24

                     12. Map showing locations of gaging stations on regulated
                             streams and gaging stations on streams draining more
                             than one physiographic province in South Carolina        ......     28

                     13. Graph showing relation between drainage area and
                             100-year flood discharge for Broad River near
                             Gaffney, Broad River near Carlisle, and Broad River
                             at Richtex    .............................................         30










                                                     TABLES



             Table 1. Weighted flood discharges for selected recurrence
                            intervals for rural streamflow stations used
                            in regionalization study     ............................   - 133-174

                     2. Distribution of stations used in the regionalization
                            analysis with observed flood data by state and
                            physiographic province     ..................................          5

                     3. Flood-frequency data derived from synthesized peak
                            discharges used in the regionalization analysis, and
                            weighted flood-frequency data for rural streamflow
                             stations used in the regionalization study        .............       7

                     4. Flood-frequency equations for ungaged sites on streams
                            in South Carolina    .......................................         15

                     5. Equivalent years of record and standard error of
                            prediction for flood-frequency equations       ................      21






                                                       v









                           TECHNIQUES FOR ESTIMATING MAGNITUDE AND FREQUENCY
                                   OF FLOODS IN SOUTH CAROLINA, 1988


                               By Wladmir B. Guimaraes and Larry R. Bohman


                                               ABSTRACT

                          Methods are provided for estimating the magnitude and
                     frequency of floods on ungaged, unregulated rural streams with
                     drainage areas greater than 0.6, 4.4, 0.1, and 0.6 square
                     miles for the lower Coastal Plain, upper Coastal Plain,
                     Piedmont, and Blue Ridge physiographic regions of South
                     Carolina, respectively. Data from 174 gaging stations in or
                     near South Carolina with 10 or more years of record through
                     September 30, 1988, and 4 stations with synthesized streamflow
                     records were used in the analyses. The frequency of peak
                     discharges at these stations was computed by fitting the
                     logarithms of the annual peak discharges at each station to a
                     Pearson type III distribution or by a graphical method.
                     Frequencies of peak discharges were regionalized by using
                     generalized least squares regression techniques to define the
                     relation of magnitude and frequency of flood discharges to
                     various basin characteristics. The analyses indicated that
                     the contributing drainage area is the only significant basin
                     characteristic necessary to determine peak discharge at
                     selected recurrence intervals.

                          Rural relations are presented for four physiographic
                     regions: (1) lower Coastal Plain, (2) upper Coastal Plain,
                     (3) Piedmont,and (4) Blue Ridge. A table of weighted peak
                     discharges for selected recurrence intervals for all gaging
                     stations in South Carolina, Georgia, and North Carolina used
                     in the regionalization analysis also is presented.
                     Flood-frequency analyses were-also made for gaging stations
                     that drain basins, which spans more than one physiographic
                     province. A supplemental data section contains gaging station
                     information; Pearson type III and graphical frequency
                     statistics; information on stage-discharge relations; and annual
                     peak discharges.


                                            INTRODUCTION

                 The U.S. Geological Survey (USGS), in cooperation with state and local
            agencies, has made many studies to estimate flood frequency and magnitude in
            rural basins. Information on flood frequency and magnitude is needed for
            the economic and safe design of bridges, culverts, embankments, dams,
            levees, and other structures at or near a stream. Flood-frequency
            information also is essential for effective flood-plain management and for
            setting appropriate flood insurance rates.









                     The U.S. Water Resources Council (1981) presented a standardized method
                for estimating the magnitude of flood discharges for various recurrence
                intervals at gaged sites. This method, along with the most recent
                regionalization techniques, were used in this investigation to provide the
                user in South Carolina with the best possible estimates of flood magnitude
                and frequency at gaged and ungaged sites on unregulated streams.

                     This report was prepared by the USGS in cooperation with the South
                Carolina Department of Highways and Public Transportation and is based
                primarily on data collected by the USGS as part of a cooperative stream
                gaging program with various State and Federal agencies. Most of the data
                for small streams were collected as part of a separate program with the
                South Carolina Department of Highways and Public Transportation And the
                Federal Highway Administration.


                                              Purpose and Scope

                     This report presents methods for estimating the magnitude and frequency
                of floods in South Carolina at ungaged rural sites and provides frequency
                information at gaged sites on unregulated rural streams. All flood data in
                South Carolina through September 1988 were analyzed. Data from bordering
                states (Georgia and North Carolina) were also included in the data base.
                The report includes:

                     1.  Equations and graphs for estimating the magnitude and frequency of
                         flood discharge on ungaged, rural, non-regulated streams.

                     2.  A method for estimating flood discharge and frequency at or near
                         gaged sites on the same rural streams.

                     3.  Flood discharge and frequency for selected sites on the main stems
                         of major streams with drainage basins located in more than one
                         physiographic province.

                     4.  A compilation of annual flood peaks at gaged sites on streams in
                         South Carolina.



                                          Previous Investigations

                     The earliest descriptions of flood frequency of streams in South
                Carolina were those made by Speer and Gamble (1964), who presented methods
                for estimating the magnitude of flood discharges for various recurrence
                intervals for streams in the South Atlantic slope basin. The area covered
                by their work extended from the James River in Virginia to the Savannah
                River along the South Carolina-Georgia State line. A more comprehensive
                treatment of flood frequency for streams in the State was that by Whetstone
                (1982), who presented methods of estimating flood magnitude and frequency
                that were based on streamflow data compiled through 1978. This report
                incorporates flood data used by these earlier investigations and includes
                additional flood data collected through 1988.




                                                     2









                                      Description of Study Area

                  The study area includes all of South Carolina which is located on the
             South Atlantic slope adjacent to the Atlantic Ocean. The state has an area
             of 31,055 square miles, and lies in parts of three physiographic provinces,
             (1) the Blue Ridge, (2) the Piedmont and, (3) the Coastal Plain (Cooke,
             1936). The Coastal Plain is divided into the upper Coastal Plain and the
             lower Coastal Plain. The physiographic provinces and locations of data
             collection sites in South Carolina and in adjacent areas in North Carolina
             and Georgia are shown in figure 1.

                  The Blue Ridge physiographical province in South Carolina consists of
             dissected, rugged mountains with narrow valleys. The land-surface elevation
             ranges from 1,000 to more than 3,500 ft above sea level. The steep terrain
             contains some areas where stream gradients exceed 250 ft/mi. Overlying the
             crystalline bedrock is a layer of weathered bedrock or saprolite. Although
             some rainfall infiltrates the saproli.te layer, the steep sideslopes and
             semipermeable soils in this region cause much of the rainfall to run off
             rapidly into stream channels. Seventy percent of the area is forested with
             a mixture of oak, hickory, and pine (S.C. Water Resources Commission, 1983,
             p. 12 and 53).

                  In the Piedmont physiographic province, land slirface elevations range
             from about 1,000 ft above sea level at the Blue Ridge foothills to about 400
             ft at the upper Coastal Plain boundary. Rolling hills, elongated ridges,
             and moderately deep to shallow valleys are typical land forms. The drainage
             pattern is well developed with stream gradients ranging from about 5 to 60
             ft/mi. The Piedmont is underlain by fractured crystalline rock consisting,
             of intrusive granite and gneiss, schist and metamorphosed volcanic rock.
             Most overlying soil is moderately to poorly permeable silty clay loams.
             Alluvial deposits of clay, silt, and sand occur along the valley floors
             (Bloxham, 1981, p. 2-4).

                  The upper Coastal Plain physiographic province in South Carolina is
             characterized by gradual slopes and rounded summits although there are
             several areas of intensely irregular terrain. Stream gradients range from 5
             to 20 ft/mi. Some hilltop elevations exceed 700 ft above sea level at the
             boundary between the upper Coastal Plain and the Piedmont but commonly are
             less than 200 ft above sea level at the boundary of the lower Coastal Plain.
             Extensive swamps and very wide flood plains are common to the four large
             through-flowing rivers (Bloxham, 1976, p. 3-5).

                  In the lower Coastal Plain physiographic province, the land surface
             slopes from elevations of about 200 ft above sea level near the boundary of
             the upper Coastal Plain to the sea. Topographic relief in this area is much
             less than that in other areas of the state, and small stream drainage
             patterns are characteristically more erratic in the seaward direction.
             Stream gradients range from about 20 ft/mi near the upper boundary to 1
             ft/mi near the coast. Swamplands associated with large portions of the
             river systems occupy much of the province. The highly permeable soils in
             this region are similar to those of the upper Coastal plain, which readily
             absorb rainfall and retard runoff to stream channels. Streamflows,
             therefore, rise and fall gradually (Bloxham, 1981, p. 4).



                                                   3













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                                 0    2 0     40  60 MILES                                           REGIONALIZATION AND STATION
                                                                     A, 2                            INDEX NUMBER
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                                 3
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                    Figure l.--Fhysiographic provinces and locations of streamflow gaging stations in South Carolina and
                                                             parts of North Carolina and Georgia.











                                           OBSERVED FLOOD DATA

                  Techniques for estimating peak discharge for a specific rec   urrence
             interval are based on the assessment of long-term flood records. The first
             streamflow data collected in the study area was for the Savannah River at
             Augusta, Ga. The U.S. Weather Bureau, now the National Weather Service,
             began collecting data at this site in 1884. By 1930, streamflow data were
             collected at a network of sites by the USGS in cooperation with the South
             Carolina State Highway Department. The data collection program continued to
             expand and by 1988 data from 174 gaging stations on streams in South
             Carolina and adjacent areas of North Carolina and Georgia were available for
             analysis. Each station used in this analysis had at least 10 years of
             record and the data were not substantially affected by regulation or
             urbanization. Data for these stations were used in the development of
             regionalized flood-frequency relations presented in this report. The
             supplemental data section of this report contains for each of these
             stations: a station description; the drainage area; the type of data
             recorder; extreme gage heights and discharges; a description of the
             stage-discharge relation; and annual peak stages and discharges for the
             period of record. Flood-frequency data derived from the peak discharges are
             also included in the supplemental data.

                  The discharges presented in table 1 (at back of   report) are the
             weighted discharges computed for each site using regression equations and
             the individual station flood-frequency.data. The distribution of gaging
             stations used to develop these regression equations are presented by state
             and physiographic province in table 2.



             Table 2.--Distribution of stations used in the regionalization analysis
                  with observed flood data by state and physioqraphic province


             Physiographic               South          North
               province                 Carolina       Carolina        Georgia       Total


             Lower Coastal Plain           11             17               12          40
             Upper Coastal Plain           12               9               5          26
             Piedmont                      25             25               27          77
             Blue Ridge                      4            18                9          31

               Totals                      52             69               53         174




                  Five stations for which streamflow data are available were not included
             in the regionalization analysis for various reasons (fig. 1). Three
             stations (map index numbers 175, 176, 177, station numbers 02197300,
             02197310, and 02197315, respectively) in the Upper Three Runs basin of the
             upper Coastal Plain physiographic province were omitted because this basin
             is flatter, has more deeply incised channels, and has fewer tributaries to
             the main stream than other basins in the same province.


                                                   5









                   As would be expected, peak discharges for selected recurrence intervals
              are much lower for the Upper Three Runs basin than for other basins in the
              upper Coastal Plains province. The regionalized flood-frequency equations
              devloped for the upper Coastal Plain province do not apply'to this basin or
              to other basins physiographically similar to the Upper Three Runs basin.

                   Miller Creek Tributary near Baldoc, S.C. (map index number 178,
              station number 02197410) was not used in the regional analysis because of
              incomplete data. Dutchman Creek near Pauline, S.C. (map index number 179,
              station number 02159600) also was not used because the stage-discharge
              relation at this station was not defined for the higher discharges.




                                           SYNTHESIZED FLOOD DATA

                   Long-term discharge records are not always available at a site;
              however, if concurrent rainfall data are available, a rainfall-runoff model
              may be used to extend the records. Frequency data for four stations used in
              this report were from a study by Whetstone (1982) in which the USGS
              Rainfall-Runoff Model (Dawdy and others, 1972) was used to synthesize a
              series of annual peak discharges. The model utilizes ten parameters to
              simulate the hydrologic processes of antecedent soil moisture, infiltration,
              and surface-runoff routing. Daily rainfall, evaporation, unit-value
              discharge, and rainfall data from several storm events collected over a
              period of 3 to 5 years were used to calibrate the model for each of the four
              basins. Long-term precipitation and evaporation data (more than 50 years of
              record) were then used to synthesize a series of annual peaks for use in
              subsequent frequency analyses. Synthesized flood discharges for these
              stations are not listed in this report; however, flood-frequency data
              derived from the synthesized discharges are listed in table 3 along with the
              weighted discharges computed for each site using the appropriate regression
              equations for each physiographic province and individual station
              flood-frequency data.



                         METHODS OF FLOOD-FREQUENCY ANALYSIS AT GAGING STATIONS

                   A frequency analysis of annual peak-flow data at gaging stations
              provided relations between the magnitude of the peak flow and its recurrence
              interval or probability of occurrence.   These relations were regionalized to
              provide flood-frequency data at ungaged sites and were used to define flood
              frequency for specific sites on streams  draining more than one physiographic
              province. Probability of occurrence is   the percentage chance that a flood
              of a specific magnitude will be equaled  or exceeded in any one year.
              Recurrence interval (the reciprocal of the probability of occurrence) is the
              average time interval, in years, between floods that equal or exceed a given
              magnitude. For example, a flood with a 100-year recurrence interval may be
              expected to be equaled or exceeded an average of once in 100 years. Stated
              another way, it is a flood that has a 1 percent probability of being




                                                    6








             Table 3.--Flood-frequency data derived from the synthesized peak discharges used in the regionalization
                  analysis and weighted flood-frequency data for rural streamflow stations used in the
                  reqionalization study


             Map        Station       Drainage    Physiographic     Type of
             index       name          area         province           data
             number       and         (square                                 Flood discharges in cubic feet per second
                         number        miles)                                  indicatied recurrence interval in years


                                                                                2      5        10      25    50       100


             180     Crabtree Swamp     14.0         Lower         Stationl    206     389    544     780     987     1,220
                    near Conway, S.C.               Coastal       weighted 2   247     450    607     872   1,060     1,310
                       (02110700)                    Plain-
             181     Reedy Creek near   10.4         Lower         Station'    244     478    677     977   1,240     1,520
                      Rains, S.C                    Coastal       weighted 2   244     472    658     939   1,190     1,450
                       (02135050i                    Plain

             182     Buck Branch at     11.9         Lower         Station     213     439    633     925   1,180     1,450
                      Bowman, S.C.                  Coastal       Weighted 2   238     464    648     935   1,170     1,440
                       (02174300)                    Plain

             183     Log Creek near      1.26       Piedmont       Station      41.0    93.0  141     220     293        378
                     Edgefield, S.C.                              Weighted 2    51.0   123    181     276     358        445
                       (02195660)


                    The station data  are computed by fitting the logarithms    of annual peak discharges to a Pearson
             Type III distribution.
                    2The weighted data are computed by weighting the station    data with discharges computed using the
             regional flood-frequency relations. The weighted data should       be used rather than the station data.









                equalled or exceeded in any given year. The risk of exceeding the 1-percent
                chance flood magnitude increases with time periods longer than 1 year.
                During any 50-year period there is about a 40 percent chance, and for any
                90-year period there is about a 60 percent chance of one or-more floods
                exceeding the 1-percent chance flood magnitude.

                     In 1981 the U.S. Water Resources Council developed and published
                standard guidelines for determining flood magnitude and frequency. The
                report (Bulletin 17B) defines a uniform method of fitting the logarithms of
                annual peaks at each site to a Pearson Type III frequency distribution.
                This distribution is defined by three statistical parameters; the mean, the
                standard deviation, and the skew. The peak discharge for a given recurrence
                interval can be computed using the following equation from Bulletin 17B:




                                               log QT = X + K S,                          (1)



                where    QT    is the estimate of the T-year flood from the log-Pearson
                               Type III distribution, in cubic feet per second;


                               is the mean of the logarithms of the annual maximum

                               discharges;


                         K     is the a scale factor that is a function of the skew

                               coefficient and recurrence interval; and


                         S     is the standard deviation of the logarithms of the

                               annual maximum discharges.




                     The accuracy of the station skew coefficient, as an estimate of the
                true skew of the frequency distribution, is generally a function of the
                length of the record. The station skew is a measure of the past history of
                annual floods, and may be unreliable when computed from periods of record
                less than 10 years because of extreme floods that may be included in the
                record. The generalized skew coefficient for an area is the average of the
                station skew coefficients of sites having at least 25 years of streamflow
                records. By weighting the station skew and the generalized skew, the



                                                      8









           effects of extreme floods can be dampened. It is recommended in Bulletin
           178 that the station skew and generalized skew be weighted inversely to
           their respective mean-square errors as follows:



                                  Gw     MSEG(G) + MSEG(G)                            (2)
                                          MSE- + MSE
                                              G      G



           where       Gw   is the weighted skew coefficient;

                     MSE_   is the mean-square error of generalized skew
                       G
                            coefficient;

                       G    is the station skew coefficient;

                     MSE    is the mean-square error of station skew coefficient;
                       G
                            and

                       0    is the generalized skew coefficient.




                The USGS computer program J407, described by Kirby (1979), was used to
           compute the relation between flood magnitude and probability of occurrence.
           Program J407 includes the features described in Bulletin 17B, but requires
           the user to exercise judgment when providing data on historic peaks,
           specifying screening levels for outliers, and interpreting the
           appropriateness of the resultant frequency curve to the observed data set.
           The weighted skew coefficient was used for most stations. The weighted or
           station skew coefficients used in the flood-frequency analyses are listed in
           the Supplemental Data section as appropriate for all stations in South
           Carolina.

                The graphical method documented by Dalrymple (1960) was used at several
           stations where the logarithms of annual peaks could not be fitted to a
           Pearson Type III distribution. For example, abrupt changes in storage in
           unregulated streams can cause abrupt changes in the flood-frequency
           relation, such as where the flow moves from a deeply incised channel to a
           broad floodplain. Circumstances at specific stations requiring use of the
           graphical method are documented in the supplemental data section of this
           report. A typical flood-frequency relation is shown in figure 2.







                                                 9






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                              1,000    L J i                     L L _L _L _L L I      L J     _L
                                  99.99 9.9 99.8 99 98 95 90 80 70 60 50 40 20 10 5    2   1   30   0.5  0.2   0.1

                                                EXCEEDANCE PROBABILITY, IN PERCENT



                     Figure 2.--Flood-frequency relation for Little Pee Dee River at Galivants
                           Ferry, S.C. (map index number 188, station number 02135000).


                                                    METHOD OF REGIONALIZATION

                           Flood-frequency information is needed at many sites that are ungaged.
                     Flood-frequency information can be transferred from a gaged site to an
                     ungaged site using the regression method as described by Riggs (1973). The
                     discharge for a given frequency, for example, can be related to physical and
                     climatic basin characteristics. Multiple regression analysis provides a
                     mathematical relation between@a single response variable (the 2- to 500-year
                     flood) and any number of explanatory variables (drainage area, channel
                     slope, and so on).

                           Numerous studies have indicated that if the logarithmic transformation
                     of peak discharge and basin characteristics are used, the relation between
                     them will be linear. To facilitate the regression analyses presented in
                     this report, all flood peaks and basin characteristics were transformed to
                     their logarithmic values before multiple regression analyses.

                           The significance of each explanatory variable (basin characteristic) to
                     the regression was assessed in this study by its ability to decrease the
                     standard error of the regression and to increase the coefficient of
                     determination (R-squared). For this study, a 95-percent confidence limit
                     was used to select the significant variables.
                                                    0





















































                                                                    10







                 Initially, exploratory regression analyses were made using an ordinary
            least squares   step-forward"' regression technique to find the most significant
            variables.   In thistype of analysis, the most highly-related variable is
            determined, then another variable is added and the standard error and
            coefficient  of determination are computed with both explanatory variables
            included in  the predictive equation. This process is continued until all
            significant  variables are selected.

                 The ordinary least squares (OLS) regression method has been
            traditionally used in the past for regionalization. This method is based on
            the assumptions that the residuals from the regression are homoscedastic and
            independent of each other. The assumption of homoscedacity means that the
            variance of the residuals remains constant regardless of which time period
            is used to compute the data being regressed. Obviously, this assumption is
            violated because different flood-frequency relations and variances will be
            obtained for differing periods of record. This is called the time-sampling
            error. Because the flood-frequency relation has time-sampling error, the
            OLS regression method will also have time-sampling error. Also, the
            assumption of independence of the residuals from each other is violated,
            because many of the flood events used to derive the flood-frequency
            relations are cross-correlated, because they experience the same climatic
            events (G.D. Tasker, A.M. Lumb, W.O. Thomas, and K.M. Flynn, U.S. Geological
            Survey, written commun., 1987).

                 Recent research by Stedinger and Tasker (1985, 1986) has indicated
            that generalized least squares (GLS) may be more appropriate for
            hydrologic regression. Their Monte Carlo analysis showed that the GLS
            technique was superior to the OLS technique when streamflow data were cross
            correlated or of different record lengths. In the generalized least
            squares technique, each basin data set in the regional regression analysis
            is weighted appropriately by taking into consideration the variance
            (time-sampling error). The spatial correlation structure of the streamflow
            characteristic is also accounted for in evaluating the accuracy of the
            regression equation. The prediction error for ungaged sites is partitioned
            into model error (error in assuming an incomplete model form) and sampling
            error (including both time- and spatial-sampling errors). The model error
            cannot be reduced by additional data collection, but the sampling error can
            be reduced by operating the existing stations longer or by installing new
            stations or some combination of both.


                 The hydrologic model is of the form:


                                                 b c
                                       QT = ABaC D ...











               where


                          QT     is the flood magnitude having T-year recurrence interval;
                          A      is a constant;

                        B,C,D    are basin characteristics (explanatory variables); and

                        a,b,c    are regression coefficients.


                    The hydrologic model also has a linear form as follows:


                       log QT = log A + a log B + b log C + c log D+...


                    This logarithmic relation is the form that was used in this study.


                    In some cases  Isqualitative variables" were included in the model to
               differentiate between physiographic provinces. An example of the linear
               form of the model including qualitative variables is:

                         log Qt = log A + a log B + b log C + c log D +       + dV

               where V is a qualitative variable that is set to zero if the variable is in
               province "x" or one if in province "y".     If the qualitative variable is
               determined to be significant by the regression analysis, the regression line
               for the two provinces have the same slope, but different intercepts. The
               qualitative variable was used to detect significant differences between
               provinces and to utilize data from both provinces where data were sparse.

                    The basin characteristics used in the regionalization study are
               described below. These variables were found to be significant in at least
               some of the exploratory regression analyses. Other explanatory variables
               were tested but were not statistically significant.


                    1.  Drainage area, A, in square miles, as determined from the best
                        available topographic map.

                    2.  Channel slope, SL, in feet per mile, is the average slope between
                        points located at 10 and 85 percent of the main channel length
                        upstream from the gage to the basin divide.

                    3.  Length of main channel, L, in miles, is the distance along the
                        length of the stream from the gage to the basin divide.






                                                     12









                  4. Storage, ST, in percent, is the percentage of the drainage.area
                      that is covered by lakes, ponds, and swamps.

                  5.  L/SL0*5, ratio of length in feet to the square root of slope, in
                      feet per mile.





                       FLOOD FREQLJENCY AT UNGAGED SITES-ON STREAMS DRAINING ONE
                                         PHYSIOGRAPHIC PROVINCE

                  Flood frequency at ungaged sites was determined using the OLS and GLS
            regression-methods. An ordinary least squares regression for exploratory
            purposes was first made using data from every station in the study area. A
            geographical bias was.detected; floods in the mountainous regions of South
            Carolina were underpredicted while those in coastal regions were
            overpredicted. Four regional boundaries were then delineated using a
            residual map, geologic and soils maps, and previous flood frequency studies
            (Whetstone, 1982).

                  Next, separate regression analyses were made using data from each of the
            four provinces (fig. 1). Drainage area was found to be the most significant
            variable. Main channel length, main channel slope, and basin storage were
            found to be significant at the 95 percent confidence level for some
            recurrence intervals and some provinces. The addition of these variables to
            the regression equations, however, did not improve the standard error by
            more than 3 percent and therefore, these variables were not included in any
            of the regression equations.

                 Within each physiographic province, the 100-year discharge was regressed
            against the explanatory variables and a qualitative variable that denotes
            location by state. These regressions indicated that Georgia and North
            Carolina Piedmont data were not significantly different from each other, but
            were both significantly different from South Carolina Piedmont data, as
            shown in figure 3. Note that the South Carolina data in figure 3 plots
            generally below the data points from Georgia and North Carolina.       Inclusion
            of the qualitative variable allows the data from all three states      to
            influence the slope of the overall relation, and at the same time      permits a
            unique intercept value for the South Carolina relation. Although       it is
            possible to use only South Carolina data in the regression, the relation
            using the data from all three states with the qualitative variable was
            considered to be more definitive because of the sparseness of the South
            Carolina data for stations with drainage areas less than about 20      Mi2.

                  The explanatory variables determined as significant in the ordinary least
            squares analyses Were then used.in the generalized least squares regression
            procedures. The 2-, 5-, 10-, 25-, 50-, 100-, and 500-year flood-frequency
            equations that resulted are listed in table 4. Graphs were also prepared
            for ease in computing the discharge estimates and are shown in figures 4-7.
            The upper coastal plain physiographic province tends to have lower
            discharges than any other physiographic region because the soil consists
            mainly of sand that has high infiltration and low runoff potential.



                                                    13













                                       1 OQ 000




                                    z
                                 Ui 0                              REGRESSION EQUATION
                                 00                          FOR NORTH CAROLINA AND GEORGIA
                                 M W
                                 40       10,000z                                                0        1P

                                                                                                  0      0
                                 UW                                              0                         REGRESSION EQUATION
                                 0
                                                                                                           FOR SOUTH CAROLINA
                                                                                                 0
                                    W
                                    W
                                 LU LL
                                           1,000
                                 0                                                                EXPLANATION
                                 00
                                                                                     o GEORGIA 1 00-YEAR DISCHARGES
                                    z                                                n NORTH CAROLINA 100-YEAR DISCHARGES

                                                                                     o SOUTH CAROLINA 100-YEAR DISCHARGES
                                             100                                    11111
                                               0.1                  1                  10                  100                 1,000
                                                         DRAINAGE AREA. IN SQUARE MILES


                         Figure 3.--Relation     between drainage area and 100-year        discharge for stations on streams draining the
                               Piedmont physiographic province in South Carolina, North Carolina, and Georgia.









                    Table 4. --Flood- frequency equations for ungaged sites on streams
                                              in South Carolina




               Flood
             discharge
                QTP

                in
             cubic  feet
             per second,
                for                                  Regression equations
                                         for the indicated physiographic provinces
             recurrence
             interval T,       Lower Coastal       Upper Coastal      Piedmont        Blue Ridge
              in years               Plain               Plain
             Q2                   56A0*  63          25A 0.74         127A 0 . 66      103A 0 .79
             Q5                 111A 0.61            44A 0.72         211A 0.64        196A 0.76

                                     0.59                0.71              0.64            0.73
             Q10   =            157A                 59A              267A             286A

                                     0.59                0.70              0.63            0.70
             Q25   =            221A                 80A              347A             429A
             Q50   =            275A 0.58            97A 0.70         410A 0.63        558A 0.69

                                     0.58                0.69              0.63            0.67
             QIOO  =            335A                 116A             474A             705A

                                     0.52                0.66              0.63            0.63
             QSOO  =            569A                 179A             615A           1,150A














                                                        15










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                                    Figure 7.--Relation between drainage area and flood discharge for selected frequencies for stations on
                                                                                           streams draining the Blue Ridge physiographic province.









                                             Accuracy of Equations

                     The accuracy of the regression equations may be measured by the
                standard error of prediction and in equivalent years of record. These
                values are listed in table 5 for all the regression equations derived for
                use in South Carolina. The prediction error for ungaged sites is
                partitioned into model error and sampling error (including both time- and
                spatial-sampling errors). The model error is that portion of the total
                error (prediction error) that cannot be reduced by additional data
                collection. The sampling error, however, can be reduced by operating the
                existing stations longer, or by installing new stations, or some combination
                of both. The average variance of prediction (sum of average sampling error
                variance and average model error variance) can be converted to an average
                standard error of prediction such as that shown in table 5. The standard
                error of prediction resulting from the regression analyses ranged from 23
                percent for the 2-year flood in the upper Coastal Plain to 53 percent for
                the 2-year flood in the Piedmont province.

                     The equivalent years of record (Hardison, 1971) is defined as the
                number of years of streamflow records needed to provide an estimate equal in
                accuracy to the regional relation. For instance, the 100-year
                flood-frequehcy equation for the Lower Coastal Pl  'ain has a value of 10 years
                for the equivalent years of record (table 5). Therefore, the 100-year flood
                can be estimated from the regression equations with the same degree of
                accuracy, on the average, that could be obtained from 10 years of actual
                record. The equivalent years of record resulting from the regional
                relations ranged from 1 year to 22 years for the 2- and 500-year floods,
                respectively, in the Piedmont province.


                                                 Limitations

                     The following guidelines apply when using the regression equations and
                graphs:

                     1.  Tne equations should be used only for ungaged sites where the basin
                         drainage area is between 0.6 and 1,252 mil for the lower Coastal
                         Plain, 4.4 and 1,720 mil for the upper Coastal Plain, 0.1 and 1,430
                         mil for the Piedmont, and 0.6 and 945 mil for the Blue Ridge
                         physiographic provinces.

                     2.  The equations should not be used for sites where the watershed is
                         substantially affected by regulation from impoundments,
                         channelization, levees, or other man-made structures.

                     3.  The equations should not be used for sites on streams in urban
                         areas unless the effects of urbanization are insignificant.

                     4.  The equations should be used with caution in areas where the
                         streamflow characteristics have not been sufficiently defined by
                         flood measurements (fig. 1). In York and Chester Counties, the
                         regional equations tend to produce discharge results that may be
                         significantly lower than those obtained using discharge records.



                                                      20









             Table 5.--Equivalent years of record and standard error of prediction for flood-frequency equations


                Flood
             discharge     Lower Coastal Plain         Upper Coastal Plain            Piedmont                Blue Ri.dge
                 QT,
                 in       Equivalent     Standard     Equivalent   Standard     Equivalent Standard     Equivalent Standard
             cubic feet    years of      error of      years of    error of      years of    error of    years of    error of
             per second     record      prediction      record    prediction      record    prediction     record   prediction
                 for                     (percent)                 (percent)                 (percent)               (percent)
             recurrence
              interval
                 T,
              in years


                 Q 2            5           30              5          23             1         53               3       32

                 Q 5            7           31              8          25             4         38               5       31
       IQ

                 Q10            8           34            10           26             7         31               8       30

                 Q25            9           40            12           29           12          29             11        31

                 Q50            9           44            13           31           15          28             12        33

                 Q100           10          47            14           33           18          28             13        35

                 Q 500          14          47            15           39           22          30             15        40









                    5.  The equations should be used with caution in the Upper Three
                        Runs basin in Aiken and Barnwell counties in the western part
                        of the Upper Coastal Plain physiographic province. The regional
                        equations tend to produce discharges that may be significantly
                        higher than those obtained using observed discharge records in
                        the Upper Three basin. To obtain flood discharges for the Upper
                        Three Runs basin, either the station discharge should be used
                        (Supplemental data) or the discharge at an ungaged site should be
                        adjusted by drainage area.


                                     Application of Regional Equations

                    Flood magnitude and frequency for ungaged rural basins in South
               Carolina can be estimated by solving the regional equations provided in
               table 4 or by using the graphs presented in figures (4-7). The location of
               regional boundaries are shown in figure 1. Step-by-step procedures for
               determining the magnitude and frequency of flood discharges are given below.

                    1.  Determine that discharge at the site is not affected by
                        regulation, urbanization, channel improvement, diversion, or tide.

                    2.  Determine the drainage area of the basin upstream of the site
                        using the best avaiable topographic map or aerial photograph.

                    3.  Determine the physiographic province (see fig. 1) in which the
                        drainage basin is located. For basins located near a boundary
                        between physiographic provinces, consult a soils map to determine
                        the proper physiographic province and associated equations.

                    4.  Using the appropriate equations in table 4, solve for the
                        discharge.

               For a 50_Mi2 watershed in the Upper Coastal Plain, the 100-year flood
               discharge can be computed as follows:



                                            Qloo = 116AO *69
                                                 = 116(50)0 .69

                                                 = 1,720 ftl/s



                                           Maximum Floods of Record

                    The drainage area and the maximum known flood for sites on streams in
               the lower Coastal Plain,.upper Coastal Plain, Piedmont, and Blue Ridge
               physiographic provinces in South Carolina are shown in figures 8-11,
               respectively. Lines representing the solutions of the 100- and 500-year
               flood equations are also shown in these figures for purposes of comparison.




                                                    22

















                                          100,000

                                        z
                                        0

                                        W



                                        W

                                           10,000
                                        W
                                        W






                                        z
                                            1,000     01
                                        W

                                                     0





                                              100,
                                                  1                   10                   100                  1,000                10,000
                                                                   DRAINAGE AREA, IN SQUARE MILES




                     Figure B.-Relation between drainage area and observed maximum flood
                               discharge for South Carolina stations and the regional relations for
                               the 100- and 500-year floods at ungaged sites on streams draining the
                               lower Coastal Plain physiographic province.


                                        100,000                                 T I T ITIrr-      I   I I I fill[       I   I I I I It

                                        z
                                        0

                                        W


                                        W
                                        11
                                        1..  10,000
                                        W
                                        III






                                            1,000







                                             100
                                                  1                   10                   100                  1,0W                10,000
                                                                  DRAINAGE AREA. IN SQUARE MILES


                     Figure 9.--Relation between drainage area and observed maximum flood
                               discharge for South Carolina stations and the regional relations for
                               the 100- and 500-year floods at ungaged sites on streams draining the
                               upper Coastal Plain physiographic province.


                                                                                             23





















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                         Fl.    0                                                                                                  0    CD
                         D  rt, Z)-                  DISCHARGE. IN CUBIC FEET PER SECOND                                   Z). r-f- ZT .1
                         p. :T W I                                                                                                                     DISCHARGE. IN CUBIC FE
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                            :3  Ln :3                                                                                          :3  (f) :3
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                                c 07                                                                                               c 0-
                                r-t- (D                                                                                            rt (D
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                            w   0            z                                                                                 a)  o           z
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                         l<     Z) W.        m                                                                             P. -t =1 W          m
                         U)     Q) p                                                                                       0   1-- w P.
                         p. 0                                                                                              (o  0        ::)    )o
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                         0 C    (f)  w       0                                                                             -0  c   U)   w      lo
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                         H w                 >                                                                             0 (c)   w    a)
                         o(o    CL 0-
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                                rt. 0                                                                                      Z)  (1)
                                                                                                                           0   c)- rt 0
                                ZT CY                                                                                              ::r 0-      F
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                            (D (D    <                                                                                         (D (D    <
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                            rt                                                                                                 rt,               -C>
                            cl) cl)                                                                                            (D                CD,
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                                00                                                                                                 00
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                                Ln   CL                                                                                            U) a









                     FLOOD FREQLENCY AT UNGAGED SITES ON STREAMS DRAINING MORE
                                   THAN ONE PHYSIOGRAPHIC PROVINCE

                 If the drainage area of the ungaged basin is located in more than one
            physiographic province, solve the appropriate equations for each
            physiographic province as though the drainage area were located entirely in
            each province, and then weight the discharge as described below. For
            example, if the drainage area is 100 square miles with 60 percent of the
            basin located in the Piedmont, and 40 percent in the Blue Ridge, computation
            of the 100-year discharge is as follows:
                 Piedmont:   Qloo = 474(100)  0.63 = 8,630  .x 60 percent = 5,18O.ft'/s

                 Blue Ridge: Q100 = 705(100)  0.67 = 15,400 x 40 percent = 6,160    ft3/S

                                                                     Sun    11,300  ft3/S





                 FLOOD FREQUENCY AT OR NEAR A GAGED SITE ON THE SAME STREAM IN ONE
                                        PHYSIOGRAPHIC PROVINCE

                 Flood magnitude and frequency can be determined for gaged sites in
            South Carolina by weighting the results of the regression relations (table
            4), or graphs (figs. 4-7), and the gaging station frequency data
            (supplemental data in appendix 1) determined by fitting the log of the
            annual peaks to a Pearson Type III distribution. Assuming that the two
            estimates are independent, the accuracy in equivalent years for the weighted
            estimate is equivalent to the sum of the accuracy of each estimate. The
            best estimate of flood discharges at a gaged site can be determined from the
            following equation:


                            109 QT(w) = Nlog QT(s) + EY109 QT(r)                         (3)
                                                  N+EY


            where   QT(w) is the weighted discharge for selected T-year recurrence
                             interval, in cubic feet per second;

                        N is the number of years of record used to compute QT(s);
                    QT(s) is the station discharge for selected T-year recurrence
                             interval, in cubic feet per second;

                       EY is the equivalent years of record for QT(r) from table 6;
                             and;

                    QT(r) is the regional discharge for selected T-year recurrence
                             interval, in cubic feet per second.



                                                   25








                     Weighted station flood discharges for selected recurrence intervals (2, 59
                10, 25, 50, and 100 years) using table 4, table 5, and equation 3 for all
                stations used in the regression analysis are listed in table 1. The weighted
                values shown were computed using all available data through 1988 and
                supersedes values previously published by Whetstone (1982). -These weighted
                values are considered the best estimates for design purposes.

                     Flood discharges for selected recurrence intervals (2, 59 10p 25, 50,
                and 100 years) computed from peak flows synthesized from a rainfall-runoff
                model were also weighted with flood-frequency data from the regression
                equations of table 4. Equivalent years for the synthetic peak discharges
                were estimated from a regression of synthetic T-year floods as a function of
                rainfall-runoff model parameters made by Lichty and Liscum (1978) and
                modified by Thomas (U.S. Geological Survey,, written commun., May 1991).
                The equivalent years for synthetic flood data are listed below:



                           Recurrence intervals                 Equivalent years
                                (years)                            of record


                                     2                                   5
                                     5                                 10
                                    10                                 15
                                    25                                 20
                                    50                                 21
                                   100                                 23




                     These data, the data in table 4 and equation 3, were used to compute
                the weighted discharge in table 3 for stations with synthesized peak-flow
                data.

                     Flood-frequency estimates at sites near a gaging station on the same
                stream can be improved by transferring the nearby weighted station data to
                the ungaged site (adjusted estimate) and weighting it with the regression
                data for the ungaged site. The adjusted estimate is determined first as
                follows:


                                                         b
                                             Q            Qg(w)                               (4)
                                              u = (@g-

                and the final weighted value can be computed by the equation
                                            Q               Q             2,&A  Qu)           (5)
                                             u(w) = (I@g_)   n             A

                                                       26







                     ERRATASHEET



      FOR U.S. GEOLOGICAL SURVEY WATER-RESOURCES
      INVESTIGATIONS REPORT 91-4157



      PLEASE REPLACE PAGE 26 WITH ATTACHED PAGE.








                 Weighted station flood discharges for selected recurrence intervals (2, 59
            109 25, 50, and 100 years) using table 4, table 5, and equation 3 for all
            stations used in the regression analysis are listed in table 1. The weighted
            values shown werecomputed using all available data through 1988 and
            supersedes values previously published by Whetstone (1982). These weighted
            values are considered the best estimates for design purposes.

                 Flood discharges for selected recurrence intervals (2, 5, 10, 25, 50,
            and 100 years) computed from peak flows synthesized from a rainfall-runoff
            model were also weighted with flood-frequency data from the regression
            equations of table 4. Equivalent years for the synthetic peak discharges
            were estimated from a regression of synthetic T-year floods as a function of
            rainfall-runoff model parameters made by Lichty and Liscum (1978) and
            modified by Thomas (U.S. Geological Survey, written commun., May 1991).
            The equivalent years for synthetic flood data are listed below:



                       Recurrence intervals                 Equivalent years
                            (years)                            of record


                                 2                                  5
                                 5                                10
                                10                                15
                                25                                20
                                50                                21
                               100                                23



                 These data, the data in table 4 and equation 3, were used to compute
            the weighted discharge in table 3 for stations with synthesized peak-flow
            data.

                 Flood-frequency estimates at   sites near a gaging station on the same
            stream can be improved by transferring the nearby weighted station data to
            the ungaged site (adjusted estimate) and weighting it with the regression
            data for the ungaged site. The adjusted estimate is determined first as
            follows:
                                        Q    (Au    bQ                                   (4)
                                          u    Ag     g(w)

            and the  final weighted value can  be computed by the equation
                                       Qu(w      1 A@@g Qn + (I      2AA   Qu            (5)
                                                                      A9



                                                   26








             -Where,
                QU     is the adjusted discharge at the ungaged site transferred from
                         the gaged site by the drainage area ratio, in cubic feet per
                         second.
                Qg(w)  is the weighted discharge for the nearby gaging station, in cubic
                         feet per second.


                Qn     is the discharge using regional relation for ungaged sites, in
                         cubic feet per second.
                Qu(w)  is the weighted discharge at the ungaged site, in cubic feet per
                         second.

                b      is the drainage area exponent of the regional relation from
                         table 4 for the applicable physiographic province.

                A      is the drainage area of ungaged site, in square miles.
                 u

                A9     is the drainage area of gaged site, in square miles.
                .AA    is the difference in drainage area between the gaged site and the
                         ungaged site, in square miles.


                  This procedure should only be used to transfer flood discharge if the
             drainage area of the ungaged site near a gaged site is within 50 percent of
             the drainage area of the gaged site. If it is not, use of the regional
             regression equations as described in the previous section will provide the
             best estimate of flood discharge.





                     FLOOD FREQLENCY AT GAGED SITES ON STREAMS DRAINING MORE THAN
                                        ONE PHYSIOGRAPHIC PROVINCE

                  Flood frequencies for gaged sites on unregulated streams draining one
             physiographic province are presented in table-1. Gaging stations located on
             streams draining more than one physiographic province in South Carolina are
             shown in figure 12 and are described in unnumbered text tables that follow.
             Some of these streams are subject to minor regulation that does not
             significantly affect annual peak discharges. The logarithm of annual peak
             discharge values for these stations were fitted to a Pearson Type III
             distribution to determine flood discharges for selected reccurrence
             intervals. This type of analysis was made for stations on the Broad River,
             Little Pee Dee River, Lynches River, and Edisto River.





                                                     27
















                                                        82,                                    so,



                              131LT-TIE I:ZIDCw]E



                                                                         19


                                                                                 4
                                                @41'
                                                              'S,A
                                                                     185

                                                       E:
                                                          1@ib                            C,   -1    -

                                                                                                           2


                                                                         9
                                                          19                                                   188
                                               05
                          -34*
                                                                              9                    19






                                                         6


                                                                                                  202
        OD                                                                                    2 01
                                                              7                         200
                                                              "r
                                                           @T-
                                                                                                                 0



                                                                                        d,




                                                                            9                           EXPLANATION


                                                                                                       F-HYS104GRAPHIC PROVINCE
                                   0     20      4101  60 MILES                                        BOUNDARY
                                                                                          r
                                                                                                  A191 GAGING STATION AND
                                   0   20  40  60 KILOMETERS                                           STATION INDEX NUMBER

                          32"


                   Figure 12.--Locations of gaging stations on regulated streams and gaging stations on streams draining
                                              more than one physiographic province in South Carolina.










                                             Broad River

                 The Broad River originates in the Blue Ridge province of North Carolina
            and flows eastward and southward through the Piedmont to Columbia, S.C.,
            where it merges with the Saluda River to form the Congaree River (fig. 12).
            Floods on the Broad River consist primarily of unregulated runoff, although
            there is some regulation at low to medium flows.

                 Flood discharges were computed for Broad River near Gaffney (map index
            number 184, station number 02153500, 1939-88); Broad River near Carlisle
            (map index number 185, station number 02156500, 1939-88); and Broad River at
            Richtex (map index number 186, station number 02161500, 1926-83). Flood
            discharges were initially computed for the three stations using the
            concurrent period of 1939-83. When flood discharge was computed for Broad
            River at Richtex using the entire period of record, 1926-83, the 100-year
            discharge increased substantially. The flood records for Broad River near
            Gaffney and Broad River near Carlisle did not include the extreme flood
            events recorded at Richtex, which occurred between 1926 and 1939. Therefore,
            an adjustment was made in accordance with Appendix 7 of U.S. Water
            Resources Council Bulletin 17B. The mean and standard deviation of the
            stations with short periods of record were adjusted to agree with the mean
            and standard deviation of the station with the longer period of record.
            Statistically, no adjustment was needed for Broad River near Gaffney, but an
            adjustment for the standard deviation was required for Broad River near
            Carlisle. The relations between flood discharge and drainage area for Broad
            River near Gaffney, Broad River near Carlisle, and Broad River at Richtex
            are shown in figure 13. The unadjusted 100-year flood discharges for all
            three Broad River stations are shown for the period 1939-83 along-with the
            adjusted 100-year flood discharge to reflect the period from 1926-83 in
            figure 13.


























                                                 29









                 1,000,000


                              EXPLANATION
               z          0FLOOD DISCHARGE
               0       -   FOR PERIOD 1926-1983
               U       -  0FLOOD DISCHARGES
               W           FOR PERIOD 1939-1983
               0          AADJUSTED FLOOD
                           DISCHARGES FOR
                           BROAD RIVER NEAR CARLISLE
               W



               W                 A
               W
               IL
               2  loo,ooo -
               co          I     W
                           >     j     X
                           W           'W
                           2
                           IL          X
               z           L



                           W     W     W
                           z     z     z

                           W     W     W
                           >     >     >



                           0     0     0
                   10,0001
                      1,0W                   10,000
                          DRAINAGE AREA.
                         IN SQUARE MILES



          Figure 13.--Relation between drainage area and 100-year flood discharge for
             Broad River near Gaffney (map index number 184, station number
             02153500), Broad River near Carlisle (map' index number 185, station
             number 02156500), and Broad River at Richtex (map index number 186,
             station number 02161500).



                                  30









                 The adjusted flood discharges for selected recurrence intervals are
            tabulated below for Broad River near Gaffney, Broad River near Carlisle, and
            Broad River at Richtex.








            Map   Station     Drain-     Flood discharge, in cubic feet per second, for
            index name         age          indicated recurrence interval, in years
            num-   and          area
            ber   number      (square
                              miles)       2      5        10        25       50        100


            184   Broad       1,490     31,500 45,800     57,700    75,900   92,100 111,000
                  River
                  near
                Gaffney
               (02153500)


            185   Broad       2,790     41,200 6-4-,000   84,000 115,000 144,000 178,000
                  River
               -  near
                Carlisle
               (02156500)


            186   Broad       4,850     59,000 89,700 115,000 153,000 187,000 225,000
                  Ri v er
                   at
                Richtex
               (02161500)



                 'Flood discharges were adjusted in accordance to Appendix 7 of Water
            Resources Council Bulletin 17B.



















                                                    31










                                                Little Pee Dee River

                      The Little Pee Dee River originates in the upper Coastal Plain of North
                 Carolina and flows southward and eastward to the lower Coastal Plain of
                 South Carolina (fig. 12). The Little Pee Dee River, known as the Lumber
                 River in North Carolina, is not regulated. Flood discharges for selected
                 recurrence intervals are tabulated below for Little Pee Dee River near
                 Dillon (map index number 187, station number 02132500, 1940-88) and Little
                 Pee Dee River near Galivants Ferry (map index number 188, station number
                 02135000, 1942-88).




                 Map    Station Drain-        Flood discharge, in cubic feet per second, for
                 index    name     age           indicated recurrence interval, in years
                 number    and     area
                          number (square
                                  miles)      2      5        10       25        50        100



                 187      Little   524      29490   3,880     4,950    6,450     7,690     9,030
                          Pee Dee
                           River
                           near
                          Dillon
                        (02132500)


                 188      Little 2,790     12,000 17,600     21,100   25,600    28,900    32,200
                          Pee Dee
                           River
                           near
                         Galivants
                           Ferry
                        (02135000)



















                                                         32








                                               Lynches River


                 The Lynches River originates in the Piedmont of North Carolina, and
            flows southeastward through the upper Coastal Plain to the lower Coastal
            Plain of South Carolina (fig. 12). The Lynches River is not regulated.
            Flood discharges for selected recurrence intervals are tabulated below for
            Lynches River near Bishopville (map index number 189, station number
            02131500, 1943-88), and Lynches River at Effingham (map index number 190,
            station number 02132000, 1930-88)., Flood discharges for the 2-, 5-, and
            10-year recurrence interval are smaller for the downstream station, Lynches
            River near Effingham, because as the Lynches River flows from the upper to
            lower Coastal Plain the flood peaks are attenuated due to increased storage
            in the flood plain.





            Map   Station Drain-       Flood discharge, in cubic feet per second, for
            index name       age          indicated recurrence interval, in years
            number and      area
                   number (square
                           miles)      2      5        10       25       50        100




            189   Lynches    675      6,770 10,200     12,400   15,400    17,600   19,800
                   River
                   near
                  Bishop-
                  ville
                (02131500)



            190   Lynches 1,030       5,610   9,190    11,900   15,800   18,900    22,300
                   River
                   near
                 Effingham
                (02132000)














                                                  33










                                                    Edisto River

                      The North Fork Edisto River and South Fork Edisto River originate in
                 the upper Coastal Plain of South Carolina and flow southeastward to the
                 lower Coastal Plain. The South and North Fork of the Edisto River merge near
                 Branchville in the lower Coastal Plain forming the Edisto River (fig. 12).
                 Flood discharges for selected recurrence intervals for Edisto River near
                 Givhans (map index number 191, station number 02175000, 1939-88) are
                 tabulated below.






                 Map     Station Drain-       Flood discharge, in cubic feet per second, for
                 index    name     age            indicated recurrence interval, in years
                 number    and     area
                          number (square
                                  miles)      2       5       10        25        50       100


                 191     Edisto   2,730    10,100 15,400     18,800    22,500    25,900   28,700
                         River
                         near
                       Givhans
                     (02175000)










                               FLOOD FREQLJENCY AT GAGED SITES ON REGLLATED STREAMS

                      Many streams in South Carolina, especially the larger streams, are
                 regulated by reservoirs. Flood-frequency relations for these streams are
                 dependent on a number of factors and are therefore quite complex.

                      Flows from reservoirs are regulated to satisfy requirements for
                 in-stream water-use downstream of the reservoirs, power generation,
                 maintenance of lake levels for recreation, and flood control. Regulation
                 procedures may change as requirements change or when other reservoirs are
                 constructed on the same stream. In general, flows during operation for
                 flood control pass through tainter gates, whereas flows for most other
                 requirements pass through generators. Operational procedures and the use of
                 storage are greatly different for the two flow regimes. The flood-frequency
                 characteristics of higher and lower magnitude floods are also greatly
                 different. For extremely large floods, not only do the relative effects of
                 storage diminish but,operations are also directed more toward preventing dam
                 failure than toward flood control and protection of downstream property.



                                                         34








                Sanders and others (1990) showed that the period after 1951 for the
           Savannah River at Augusta, Ga. (station number 02197000) was significantly
           free of extremely large floods, based on an unusually long period of flood
           data (1796-1985). A flood-frequency relation was established for the site
           using peak discharges computed by the routing of synthesized inflow
           hydrographs through the reservoirs to the site using current operating
           conditions. This method produced considerably larger discharges than the
           frequency relation derived by Whetstone (1982) in which the logarithms of
           annual peak discharges were fitted to a Pearson Type III distribution for
           the relatively flood-free period (1952-80).

                Therefore, to accurately determine the flood frequency of regulated
           streams, a representative number of extremely large-flood events should be
           included in the analysis, using methods similar to those used by Sanders and
           others (1990). Flood frequency data for gaged sites on regulated streams
           were not determined for this report (except for Savannah River at Augusta,
           Ga., map index no. 207, station number 02197000) because observed data were
           not available for hydrograph simulations, and because hydrograph simulation
           by rainfall-runoff modeling was beyond the scope of the study.

                The location of USGS gaging stations on regulated streams is shown in
           figure 12. Annual peak discharge data for these stations are provided in
           the supplemental data section of this report. Other useful information
           pertaining to regulated streams for which observed record is available is
           provided in the following sections. The reservoir data were taken from a
           report by Ruddy and Hitt (1990).




























                                                35










                                                   Pee Dee River

                      The Pee Dee River originates in the Blue Ridge province of North
                Carolina and flows through the Piedmont, upper Coastal Plain, and lower
                Coastal Plain physiographic provinces (fig. 12). Through most of Nortm
                Carolina it is known as the Yadkin River.


                      Three reservoirs on the Yadkin River and two reservoirs on the Pee Dee
                River are used for hydroelectric power generation. A sixth reservoir,
                located on the Yadkin River, W. Kerr Scott Reservoir, is used for flood
                control and water supply. Selected data on these reservoirs are listed
                below.





                    Name              Date              Name         Drainage      Flood-storage
                     of                 of               of            area           capacity
                 reservoir         completion          stream         (square       (acre-feet)
                                                                       miles)


                W. Kerr Scott        1963              Yadkin             350          112,000
                   Reservoir

                High Rock Lake       1927              Yadkin          4,000            64,400


                Tuckertown           1962              Yadkin          49120               0
                   Reservoir

                Badin Lake           1917              Yadkin          4,180            75,800


                Lake Tillery         1928              Pee Dee         49600            29,500


                Blewett Falls        1912              Pee Dee         6,830              7,000
                   Lake






                      Annual peak discharge data are available for one gaging station on the
                Pee Dee River downstream from the lakes. The Pee Dee River at Peedee (map
                index number 192, station number 02131000, 1939-88) (Supplemental data).









                                                        36










                                                Catawba River

                  The Catawba River originates in the Blue Ridge province of North
             Carolina and flows through the Piedmont province of South Carolina and
             becomes the Wateree River below Lake Wateree (fig. 12). Ten reservoirs, six
             in North Carolina and four in South Carolina, are located on the Catawba,
             River and are storage facilities for hydroelectric power generation.
             Selected data on eight of these reservoirs are presented below.




                Name               Date             Drainage area            Flood-storage
                 of                  of                (square                 capacity
              reservoir        completion               miles)               (acre-feet)


             Lake James           1919                     380                  67,900


             Rhodhiss Lake        1925                  1,090                   50p2OO


             Lake Hickory         1928                  1,310                   6lpl4O


             Lookout Shoals       1915                  l-,450                    6,240
               Lake


             Lake Norman          1963                  1,790                   182,000


             Mountain Island      1923                  1,860                   23,300
               Reservoir

             Lake Wylie           1900                  3,020                   33,000


             Fishing Creek        1916                  3t810                         0
               Reservoir





                  Annual peak discharge data are available for the Catawba River near
             Rock Hill (map index number 193, station number 02146000, 1963-88) and
             Catawba River near Catawba (map index number 194, station number 02147000,
             1968-88) (Supplemental data).








                                                      37










                                                   Wateree River

                      The Wateree River originates at the outflow of Lake Wateree, which was
                 built on the Catawba River. The Wateree River flows southeastward through
                 the upper Coastal Plain where it merges with the Congaree River to form
                 the Santee River (fig. 12). Lake Wateree is used for hydroelectric power
                 generation. Selected data for Lake Wateree are presented below.



                 Station              Date                 Drainage           Flood-storage
                   name               of                     area                capacity
                                  completion           (square miles)          (acre-feet)


                 Lake Wateree       1919                    4,750                  45,100


                      Annual peak discharge data are available for Wateree River near
                 Camden (map index number 195, station number 02148000, 1963-88) (Supplemental
                 data).








                                                    Saluda River

                      The'Saluda River originates in the Blue Ridge province and flows
                                  through the Piedmont province of South Carolina where it
                 merges with the Broad River near Columbia forming the Congaree River (fig.
                 12). Two reservoirs, Lake Greenwood and Lake Murray, are located on the
                 Saluda River. Selected data for these reservoirs are presented below.




                    Name              Date             Drainage area            Flood-storage
                     of                 of                (square                  capacity
                  reservoir        completion             miles)                 (acre-feet)


                 .Lake Greenwood      1940                1,150                  147,000

                 Lake Murray          1930                29420                  1259000


                      The Saluda River above Lake Greenwood is not affected significantly by
                 regulation. Flood discharges for drainage areas less than     Boo Mi2  in this
                 part of the basin should be determined as described in previous sections of
                 this report by (1) estimating flood discharge at an ungaged site, or (2)
                 estimating flood discharge at or near a gaged site. The three gaging


                                                         38








           qtotions on the Saluda River upstream from Lake Greenwood (fig. 1) are
           Saluda River near Greenville (map index number 82, station number 02162500,
           1942-78), Saluda River near Pelzer (map index number 83, station number
           02163000, 1930-77), and Saluda River near Ware Shoals (map index number 84,
           station number 02163500, 1939-78). Records also are available for three
           stations downstream from Lake Greenwood. These are Saluda River at
           Chappells (map index number 196, station number 02167000, 1927-88), Saluda
           River near Silverstreet (map index number 197, station number 02167500,
           1927-65), and Saluda River near Columbia (map index number 198, station
           number 02169000, 1926-88) (Supplemental data).

                                           Congaree River

                The Congaree River is formed at the confluence of the Broad River and
           Saluda River at Columbia, S.C. The Congaree River flows southeastward and
           joins the Wateree River to form the Santee River (fig. 12). The Broad River
           basin comprises approximately two-thirds of the drainage area of the
           Congaree River. Flow of the Congaree River is highly regulated by Lake
           Murray, which is located on the Saluda River. Annual peak-discharge data
           are available for the Congaree River at Columbia (map index number 199,
           station number 02169500) (Supplemental data).

                                             Santee River

                Formed at the confluence of the Congaree and Wateree Rivers, the
           Santee River flows directly into Lake Marion - the largest reservoir by
           surface area in the State.

                                                                  Flood-storage
           Name of           Date of          Drainage area         capacity
           reservoir        completion        (square miles)       (acre-feet)


           Lake Marion        1941               14,680             255,000


                Since 1941, most of the discharge from Lake Marion has been diverted to
           the Cooper River through a diversion canal to Lake Moultrie (fig. 12). A
           rediversion canal, completed in 1986, restores approximately 80 percent of
           the previously diverted flow back to the Santee River. Due to the extensive
           hydrologic modification, which has taken place over the last 40 to 50 years,
           frequency computations were not made for stations along the Santee River.
           However, annual peak discharges for the four stations with 10 or more years
           of record are listed in the supplemental data section; Santee River at
           Ferguson (map index number 200, station number 02170000, 1908 to 1941),
           Santee River near Pineville (map index number 201, station number 02171500,
           1942 to current year), Santee River near Russellville, (map index number
           202, station number 02171560, 1978 to current year), Santee River below St.
           Stephens (map index number 203, station number 02171650, 1971 to 1981)
           (Supplemental data).






                                                39










                                                  Savannah River

                     The Tugaloo and Seneca Rivers, which originate in the Blue Ridge
                province, converge to form the Savannah River. The Savannah River is the
                state boundary between Georgia and South Carolina and is regulated by three
                reservoirs along its main stem. The reservoirs are operated by the U.S.
                Army Corps of Engineers for flood control, generation of power, and
                navigation. Data pertaining to the reservoirs are listed below (Sanders and
                others, 1990).



                    Name             Date             Drainage area           Flood-storage
                     of                of               (-quare                 capacity
                 reservoir         completion            miles)               (acre-feet)


                Lake Hartwell        1960                2,088                  293,000


                Richard B.           1984                2@900                  140,000
                  Russell
                   Lake

                Strom Thurmond       1953                6,150                  390,000
                   Lake








                     Frequency data for Savannah River at Augusta (map index number 207,
                station number 02197000) recently published in USGS Water-Resources
                Investigations Report 90-4024 (Sanders and others, 1990), are tabulated
                below.




                Map    Station     Drain-     Flood discharge, in cubic feet per second, for
                index   name       age           indicated recurrence interval, in years
                number and         area
                       number     (square
                                   miles)    2        5         10       25        50       100


                207   Savannah    7,508    34,500 51,500      69,000 105,000 140,000 180,000
                       River
                        at
                      Augusta
                     (02197000)




                                                        40








                Annual peak-discharge data for five other stations with 10 or more
           years of record on the Savannah River are listed in the supplemental data
           section of this report; Savannah River near Iva (map index number 204,
           station number 02187500, 1949 to 1981), Savannah River near Calhoun Falls
           (map index number 205, station number 02189000, 1900 to 1979), Savannah
           River near Clarks Hill, S.C. (map index number 206, station number 02195000,
           1940 to 1954), Savannah River at Burtons Ferry Bridge near Millhaven, Ga.
           (map index number 208, station number 02197500, 1930 to current year), and
           Savannah River near Clyo, Ga. (map index number 209, station number
           02198500, 1925 to current year).




                                            Pacolet River

                The Pacolet River originates in the Blue Ridge province and flows
           southeastward to'the Piedmont Province where it merges with the Broad River
           (fig. 12). The South Pacolet River is regulated by Lake William C. Bowen,
           and the North Pacolet River is unregulated. Selected data for the reservoir
           are presented below.



             Name             Date          Drainage area         Flood-storage
               of              of             (-quare               capacity
              lake         completion         miles)              (acre-feet)


            William        1956                79.4                  99600
            C. Bowen


                Annual peak-discharge data are available for Pacolet River near
           Fingerville (map index number 210, station number 02155500, 1903-88), and
           Pacolet River near Clifton (map index number 211, station number 02156000,
           1940-78) (Supplemental data).






                                 FREQUENCY OF STORM TIDES ALONG THE
                                       SOUTH CAROLINA COAST

                The magnitude and frequency of discharges presented in previous
           sections of this report do not apply where flooding is influenced by extreme
           tidal events. The theoretical frequency of storm-tide elevations along the
           South Carolina coast has been investigated by Myers (1975) and more recently
           in a series of flood-insurance studies by the Federal Emergency Management
           Agency (1986, 1987, 1988, 19899 1991). These references should be consulted
           for information related to storm tide frequency.



                                                41











                                                   SUMMARY


                     Flood frequencies were determined from observed streamflow data at 174
                gaging stations on rural, unregulated streams and from synthetic record at 4
                additional stations on rural, unregulated streams by fitting the logarithm
                of annual peak discharges to a Pearson type III distribution or by graphical
                methods. Fifty-six of these gaging stations were in South Carolina, and 122
                were near the South Carolina border, in either North Carolina or Georgia.
                Regional relations between flood discharge and drainage area were determined
                by generalized least squares regression analyses for each physiographic
                province. Equations, maps, and graphs are provided for estimating flood
                discharges with recurrence intervals of 2, 5, 10-, 25, 50, 100, and 500 years
                on ungaged streams in South Carolina. Standard errors of prediction for the
                regional equations ranged from 23 to 53 percent.

                     Flood discharges at gaged sites can be computed using a weighted
                average of the discharge determined from regional regression equations and,
                the discharge determined from the Pearson type III analysis for the gaging
                station. Methods for estimating flood discharges for sites on gaged and
                ungaged streams that drain in more than one physiographic province are also
                presented. A weighting method for determining peak discharges at sites at
                or near gaging stations on the same stream is given. Relations between
                flood discharges and recurrence interval are presented for gaging stations
                on streams draining more than one physiographic province.

                     A supplemental data section provides the data used in the frequency
                analyses. Included in this section are annual peak stages, and discharges,
                frequency and statistical data, and a station description for each gaging
                station with 10 or more years of data on streams in South Carolina.


























                                                      42









                                        SELECTED REFERENCES

           Bennett III, C.S., 1984, Impact of the proposed 1-326 crossing on the
                500-year flood stages of the Congaree River near Columbia, South
                Carolina: U.S. Geological Survey Water-Resources Investigation Report
                84-4280, 23 p.

           Bloxham, W.M., 1976, Low-flow characteristics of streams in the inner
                Coastal Plain of South Carolina: South Carolina Water Resources
                Commission, Report No. 5, 31 p.

                 1981, Low-flow characteristics of ungaged streams in the Piedmont and
                lower Coastal Plain of South Carolina: South Carolina Water Resources
                Commission, Report No. 14, 48 p.

           Cooke, C.W., 1936, Geology of the Coastal Plain of South Carolina: U.S.
                Geological Survey Bulletin 867, 196 p.

           Dalrymple, Tate, 1960, Flood-frequency analyses, Manual of Hydro  logy: Part
                3., Flood-Flow Techniques: U.S. Geological Survey Water-Supply Paper
                1543-A, 80 p.

           Dawdy, D.R, Lichty, R.W., and Bergmann, J.M., 1972, A rainfall-runoff
                simulation model for estimation of flood peaks for small drainage basins:
                U.S. Geological Survey Professional Paper 506-8, 28 p.

           Federal Emergency Management Agency, 1986, Flood Insurance Study,
                unincorporated areas, South Carolina, Beaufort County: Federal
                Emergency Management Agency, Flood Insurance Study, 29 p.

           ----- 1987, Flood Insurance Study, unincorporated areas, South Carolina,
                Colleton County: Federal Emergency Management Agency, Flood Insurance
                Study, 22 p.

                 1988, Flood Insurance Study, unincorporated areas, South Carolina, Horry
                County: Federal Emergency Management Agency, Flood Insurance Study, 49 p.

                 1989, Flood Insurance Study, unincorporated areas, South Carolina,
                Georgetown County: Federal Emergency Management Agency, Flood Insurance
                Study, 51 p.

           ----- 1991, Flood Insurance Study, unincorporated areas, South Carolina,
                Charleston County: Federal Emergency Management Agency, Flood Insurance
                Study, 53 p.

           Hardison, C.H., 1971, Prediction error of regression estimates of
                stream-flow characteristics at ungaged sites, in U.S. Geological Survey
                Research 1971: U.S. Geological Survey Professional Paper 750-C, p.
                C228-C236.

           Kirby, W., 1979, Log-Pearson Type III flood-frequency analysis using
                guidelines of Water Resources Council (Program J407): U.S. Geological
                Survey WATST9RE User's Guide, v. 4, chap. I-C, 57 p.


                                                 43










                SELECTED REFERENCES--Continued


                Lichty, R.W., and Liscum, Fred, 1978, Arainfall-runoff modeling procedure
                      for improving estimates of T-year annual floods for small drainage
                      basins: U.S. Geological Survey Water-Resources Investigations 78-7,
                      44 p.

                Myers, V.A., 1975, Storm tide frequencies on the South Carolina coast:
                      National Oceanic and Atmospheric Ackninistration Technical Report,
                      NWS-16, 79 p.

                Riggs, H.C., 1973, Regional analysis of streamflow characteristics: U.S.
                      Geological Survey Techniques of Water-Resources Investigations, Book 4,
                      Chapter B3, 15 p.

                Ruddy, B.C., and Hitt, K.J., 1990, Summary of selected characteristics of
                      large reservoirs in the United States and Puerto Rico, 1988: U.S.
                      Geological Survey Open-File Report 90-163, 295 p.

                Sanders, Jr., C.L., Kubik, H.E., Hoke, Jr., J.T., Kirby, W.H., 1990, Flood
                      frequency of the Savannah River at Augusta, Georgia: U.S. Geological
                      Survey Water-Resources Investigations Report, 90-4024, 87 p.

                South Carolina Water Resources Commission, 1983, South Carolina State water
                      assessment: South Carolina Water Resources Commission Report No. 140,
                      367 p.

                Speer, P.R., and Gamble, C.R., 1964, Magnitude and frequency of floods in
                      the United States, Part 2-A, South Atlantic Slope basins, James River
                      to Savannah River: U.S. Geological Survey Water-Supply Paper 1673,
                      329 p.

                Stedinger, J.R., and Tasker, G.D., 1985, Regional hydrologic analysis 1.:
                      Ordinary weighted, and generalized least squares compared: Water
                      Resources Research, (21) 99 p. 1421-1432.

                ----- 1986, Regional hydrologic analysis 2t Mean-error estimators, estimation
                      of sigman, and log-pearson Type 3 distributions: Water Resources Research,
                      (22) 10, p. 1487-1499.

                U.S. Water Resources Council, 1981, Guidelines for determining flood flow
                      frequency: U.S. Water Resources Council Bulletin 17B, 183 p.

                Whetstone, Benjamin, 1982, Technicques for estimating magnitude and
                      frequency of floods in South Carolina: U.S. Geological Survey
                      Water-Resources Investigation Report 82-1, 78 p.









                                                       44























                                                                                          I




















                                        SUPR-B4ENTAL DATA







































                                                45












                                              SUPR-EMENTAL DATA

                                            Explanation of Tables


                     The following tables contain flood data for streamflow gaging stations
                in South Carolina. The tables contain a brief description of the gage
                location, type of gage, gage datun (if known), drainage area in square
                miles, stage-discharge relation, historical data, hydrologic unit number'
                and explanatory remarks.

                     The log-Pearson Type III flood-frequency data using either a weighted
                or station skew coefficient, and adjusted for historic peaks, high and low
                outliers, and truncated or incomplete record, are given for most stations
                with 10 or more years of record.

                     The tables of peak stages and discharges show only the annual maximums.
                Underlined data in these tables signify the following:

                     1.  An underlined entry in the "Water yeare" column indicates
                         discontinuous record.

                     2.  An underlined entry in the "'Gage height" column indicates a change
                         in gage datum and means that the gage height above and below the
                         line are not comparable.

                     3.  Underlined entries in the "Date" and "Discharge" columns indicate a
                         change in the site location that significantly affects the
                         stage-dishcarge relation.















                     'The hydrologic unit number is determined from a set of maps developed
                by the U.S. Geological Survey that depict the approved boundaries of
                river-basin units of the United States (Seaber and others, 1984). These
                maps and associated codes provide a standardized base for use by
                water-resources organizations in locating, storing, retrieving, and
                exchanging hydrologic data; indexing and inventorying of hydrologic data and
                informaton; cataloging of water-data aquisition activities; and a variety of
                other applications.

                                                     46










                                                                   WACCAMAW RIVER BASIN

                                                         02110500 WACCAMAW RIVER NEAR LONGS, SC


             LOCATION.--Lat 33*54'45", long 76*4215511, Horry County, Hydrologic Unit 03040206, near right bank, on
                   downstream side of bridge on State Highway 9, 500 ft downstream from Buck Creek, 2.1 mi southeast of Longs,
                   and at mile 85.4.
             DRAINAGE AREA.--1,110 m12,      approximately.

             PERIOD OF RECORD.--March 1950 to current year.

             GAGE.--Water-stage recorder. Datum of gage is 5.28 ft above National Geodetic Vertical datum of 1929 (levels of
                   Corps of Engineers). Prior to Aug. 11, 1967, nonrecording gage at same site and datum.

             REMARKS.--Records good.
             EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 16,200 ft3/s Aug. 23, 1981, gage height, 14.87 ft.
             STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 11,800 fts/s and graphically extended on
                logarithmic plotting paper.
                    FLOOD-FREQUENCY DATA (ft3/s)                            LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                    38 YEARS OF RECORD                                      Mean                           -    3.744
                    LOG-PEARSON TYPE     III                                Standard Deviation             =    0.228
                        Q    =   5,640                                      Weighted Skew                 = -0.210
                        Q    =   8,660
                        Q 10 '  10,700
                        Q 5  =  13,400
                        QQ50 =  15,300
                          100=  17,300


                                                               Peak Stages and Discharges


             Water     Date     Gage     Discharge       Water      Date      Gage     Discharge       Water      Date      Gage     Discharge
             year             hTight                     year               height         3           year                height        3
                                 ft)       (ft3/5)                            (ft)      (ft /s)                             (ft)      (ft /a)


             1951    Jan. 8      9.41      1,860         1966     Mar.  10    12.64      7,750         1981     Aug.  23    14.87       16,200
             1952    Apr. 2     10.05      2,520         1967     Aug.  20    11.73      5,530         1982     Feb.  22    11.97       5,540
             1953    Mar. 15    11.50      6,360         1968     Jan.  21    10.42      2,970         1983     Mar.  26    14.40       12,200
             1954    Apr. 11    10.00      2,520         1969     Aug.  13    13.26      9,440         1984     Apr.    5   11.50       4,800
             1955    Sept.29    13.82      10,300        1970     Mar.  31    11.96      6,060         1985     Feb.  21    11.31       4,250

             1956    Feb.  19    9.89      2,230         1971     Mar.  12    12.85      8,300         1986     Aug.  27      9.94      2,150
             1957    Mar.  15   10.38      3,780         1972     Feb.  14    12.19      6,100         1987     Mar.    9   12.75       7,550
             1958    Apr.  18   12.46      7,540         1973     Feb.  20    13.10      8,620         1988     Jan.  26    10.12       2,440
             1959    Mar.  13   13.40      9,760         2974     Aug.  26    12.01      5,720
             1960    Aug.   4   13.52      10,000        1975     Feb.  25    11.27      4,240

             1961    July   6   13.94      11,100        1976     July  13    11.54      4,780
             1962    Mar.  16   11.11      4,520         1977     Mar.  14    10.95      3,630
             1963    Feb.   1   11.90      6,180         1978     Jan.  28    11.92      5,540
             1964    Mar.   5   12.02      6,200         1979     Sept.16     12.72      7,470
             1965    Oct.  17   12.09      6,380         1980     Mar. 24     12.24      6,200






























                                                                            47











                                                                         FEE DEE RIVER BASIN

                                                              02130500 JUNIPER CREEk NEAR CHERAW, SC


                    LOCATION.--Lat 34*39', long 79*54', Chesterfield County, Hydrologic Unit 03040201, at left end of Eureka Lake
                         Dam, 1.5 mi upstream from mouth and 3.5 mi south of Cheraw.
                    DRAINAGE AREA.--64 m12,     approximately.

                    PERIOD OF RECORD.--May 1940 to September 1958.

                    GAGE.--Recording. Altitude of gage is 90 ft (from Corps of Engineers maps.)

                    REMARKS.--Records good.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 3,910 fts/s, Sept. 18, 1945, gage height, 5.71 ft.
                    STAGE-DISCHARGE RELATION.--Defined by current-meter measurements below 810 ft           3/s andgraphically extended on
                         logarithmic plotting paper and using a computation of flow over dam at 3,190 ft /a.
                           FLOOD-FREQUENCY DATA (ft3    /a)                          .STATISTICS (LOG UNITS1
                           18 YEARS OF RECORD                                   Mean                     -    2.619
                           GRAPHICAL  SOLUTION                                  Standard Deviation       -    0.251
                              Q2    =     365                                  2Station Skew             =    1.374
                              Q5    =     642
                              Q10   =     900
                              Q25   =   11410
                              Q     =  1 980
                               50   =   2:760
                              Q100


                                                                     Peak Stages and Discharges


                    Water     Date    Gage      Discharge      Water     Date        Gage    Discharge       Water     Date       Gage     Discharge
                    year             height                    year               height         3           year               height          3
                                      (ft)        (ft3 /a)                           (ft)     (ft Is)                             (ft)      (ft /a)


                    1941    July 15   1.33          395        1947     Oct. 10      1.32        369         1953     June 9      2.30          Sao
                    1942    Aug. 20   1.22          332        1948     Feb. 15      1.41        430         1954     Dec. 15     1.20          316
                    1943    Jan. 20   1.12          295        1949     May    2     1.50        459         1955     Oct. 17     1.01          235
                    1944    Mar. 22   1.10          286        1950     Nov. 3       1.00        224         1956     Sept.15                   360
                    1945    Sept.18   5.71        3,910        1951     Sept.  8     1.34        392         1957     Sept.12     1.20          316

                    1946    May 5     1.30          410        1952     Sept.  1     2.05        778         1958     July 22     1.92          712

                         1 The logarithms   of annual peak discharges could not be fitted to a        Pearson type   III distribution because of
                    regulation at low to    medium flows; therefore, a graphical solution was used that followed the systematic record
                    at the lower end and    the WRC weighted estimate at the upper end of the flood frequency curve.
                         2 Station skew computed using graphical frequency relation.























                                                                                    48









                                                                    PEE DEE RIVER BASIN

                                                           02130900 BLACK CREEK NEAR MCBEE, SC


              LOCATION.--Lat 34*30'50", long 80*1110011, Chesterfield County, Hydrologic Unit 03040201, near right bank, at
                    downstream side of bridge on U.S. Highway 1, 0.2 mi upstream from Little Alligator Creek, 5.3 mi northeast
                    of McBee, and at 5ile 59.1.
              DRAINAGE AREA.--108 mi .

              PERIOD OF RECORD.--October 1959 to current year.

              GAGE.--Water-stage recorder. Datum of gage is 224.72 ft above National Geodetic Vertical Datum of 1929. Prior
                    to December 22, 1959, nonrecording gage at same site and datum.

              REMARKS.--Records good.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,770 ft3/s, July 16, 1975, gage height, 11.29 ft.

              STAGE-DISCHARGE RELATION.--Defined by current-meter measurements throughout entire range of discharge.
                     FLOOD-FREQUENCY DATA (ft3/3)                            LOG-PEARSON TYPE III STATISTICS (= UNITS)
                                OF REr
                     29 YEARS         'ORD                                   Mean                           -   2.
                     LOG-PEARSON TYPE     III                                Standard Deviation             -    0.150
                         Q 2  =      722                                     Weighted Skew                  -    0.059
                         Q5   =   1.040
                         Q10  =   11210
                         Q 25 =   11430
                         Q    =   1 590
                           50 =   1:76o
                         Q100


                                                                Peak Stages and Discharges


              Water     Date     Gage     Discharge       Water      Date       Gage    Discharge       Water      Date      Gage     Discharge
              year              h7ight                    year               height                     year                height
                                  ft)       (ft3/s)                             (ft)      (ft3/a)                            (ft)      (ft 3/a)


              1960    Apr.    7   9.59       804          1970     Mar.  24     8.83        411         1980     Mar.  31    10.21        1,010
              1961    Feb.  26    9.65       840          1971     Aug.  19     10.44     1,120         1981     July    5    9.47         666
              1962    Mar.  13    9.76       906          1972     Oct.    4    10.06       930         1982     Jan.    6    9.51         683
              1963    Jan.  22    9.37       678          1973     Apr.    2    9.80        800         1983     Mar.  19    10.61        1,240
              1964    Mar.  17   10.04      1,070         1974     Aug.  10     8.97        471         1984     Mar.  31     9.21         563

              1965    Oct.  18   10.08      1,100         1975     July  16     11.29     1,770         1985     Aug.  27     9.08         517
              1966    Mar.    6   9.34       670          1976     June  23     9.51        694         1986     Nov.  23     8.85         440
              1967    Aug.  26    9.43       715          1977     Mar.  15     9.68        762         1987     Mar.    2   10.03         921
              1968    Jan.  13    9.27       640          1978     Jan.  28     9.51        694         1988     Jan.  21     8.01         286
              1969    June  18   10.08      1,110         1979     Feb.  27     10.35     1,090








































                                                                             49










                                                                         PEE DEE RIVER BASIN

                                                              02130910 BLACK CREEK NEAR HARTSVILLE, SC


                    LOCATION.--Lat 34*23150", long 80*09'00", Darlington County, Hydrologic Unit 03040201, at downstream side of
                          bridge on State Road 23, 1,000 ft downstream from dam at H. B. Robinson Steam Electric Plant, 2.1 mi
                          upstream from Beaverdam Creek, 4.6 mi west of Hartsville, and at mile 49.9.
                    DRAINAGE AREA.--173 mi2.

                    PERIOD OR RECORD.--October 1960 to current year.

                    GAGE.--Water-stage recorder. Datum of gage is 177.48 ft above National Geodetic Vertical Datum of 1929.

                    REMARKS.--Records fair. Some regulation by storage in steam electric plant reservoir above station.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 2,010 ft3/s, Aug. 18, 1971, gage height, 10.08 ft.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 1,070 ft3/s and graphically extended on
                         logarithmic platting paper.
                          FLOOD-FREQUENCY DATA (ft3     /s)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS1
                          29 YEARS-OF RECORD                                       Mean                         -     2.920
                          LOG-PEARSON TYPE    III                                  Standard Deviation           -     0.168
                              Q2    '     828                                      Station Skew                 -     0.095
                              Q 5   =  11150
                              Ql    =  11370
                              Q25   =  11660
                              Q5    =  11880
                              Q100  -  21100

                                                                     Peak Stages and Discharges


                    Water     Date    Gage     Discharge       Water      Date      Gage     Discharge       Water      Date     Gage      Discharge
                    year             height                    year                height                    year                height
                                      (ft)        (ft3 Is)                          (ft)       (ft3/s)                             ft)       (ft3/a)


                    1960    Apr.    7  9.59         804        1970     Mar.  23     7.21         505        1980     Mar.  31     8.57       1,160
                    1961    Feb.  25   8.82        1,060       1971     Aug.  18     10.08     2,010         1981     Aug.   6     6.99         510
                    1962    Mar.  14   7.93         860        1972     Jan.  14     8.21         915        1982     Jan.   7     8.94       1,360
                    1963    Jan.  22   8.10         950        1973     June  22     8.34         988        1983     Mar.  20     8.47         984
                    1964    Mar.  18   8.17         896        1974     Aug.    9    7.40         624        1984     Dec.   7     7.86         741

                    1965    Oct.  19   8.23         924        1975     July  17     9.52      1,7.40        1985     Feb.  11     7.72         686
                    1966    Mar.    7  7.60         668        1976     June  27     6.97         541        1986     Nov.  22     7.11         482
                    1967    Aug.  26   7.67         692        1977     Mar.  25     7.67         770        1987     Mar.   3     8.56       1,160
                    1968    Jan.  12   7.85         760        1978     Jan.  26     7.69         776        1988     Jan.  25     6.24         347
                    1969    June  24   7.93         792        1979     Feb.  27     8.59      1,170









































                                                                                   50









                                                                      PEE DEE RIVER BASIN

                                                            02131000 PEE DEE RIVER AT PEEDEE, SC


               LOCATION.--Lat 34*12'15", long 79'32155", Marion County, Hydrologic Unit 03040201, at downstream side of
                     downstream bridge on U.S. Highway 76 at Peedee, 0.2 mi downstream from Seaboard Coast Line Railroad bridge,
                     8.2 mi downstream from Black Creek, and at mile 100.2.
               DRAINAGE AREA.--8,830 m12, approximately.

               PERIOD OF RECORD.--October 1938 to current year. Monthly discharge only for some periods, published in WSP 1303.
                     Prior to October 1947, published as "near Mars Bluff." Gage-height records collected at practically same
                     site since 1923 are contained in reports of National Weather Service.

               GAGE.--Water-stage recorder and data collection platform. Datum of gage is 24.73 ft above National Geodetic
                     Vertical Datum of 1929. Prior to Oct. 1, 1947, at site 1.6 mi downstream at datum 1.27 ft lower.
               REMARKS.--Flow regulat%d by six powerplants above station. Combined usable capacity of reservoirs,
                     30,819,624,   000 ft .
               EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 220,000 ft3/s, Sept. 22, 1945, gage height, 33.30 ft (site and
                     datum then in use).
               STAGE-DISCHARGE RELATION. --Defin7d.by cuirent-meter measurements below 76,000 ft3/s and extended on basis of
                     discharge measurement of 22        00 ft /s at Cheraw, SC.

                                                                 Peak Stages and Discharges


               Water     Date      Gage    Discharge       Water      Date      Gage     Discharge        Water      Date      Gage     Discharge
               year              height                    year                 height                    year                height
                                   (ft)      (ft3  /s)                          (ft)       (ft3  /s)                           (ft)      (ft3  /s)


               1939    Mar.    6   25.61     66,700        1959     Apr.  26    21.44       28,800        1979     Mar.   2     29.03     102,600
               1940    Aug.  22    22.35     35,300        1960     Apr.  10    26.28       70,400        1980     Apr.   2     24.11     42,600
               1941    Apr.    9   19.32     17,400        1961     Mar.    3   23.86       46,300        1981     July   3     18.72     19,000
               1942    Mar.  15    22.26                   1962     Jan.  14    22.98       39,300        1982     Jan.   9     22.75     34,100
               1943    Feb.    3   22.31     34,400        1963     Mar.  20    24.54       53,400        1983     Mar.  25     24.59     46,000

               1944    Mar.  26    24.32     51,800        1964     Apr.  14    23.95       47,600        1984     Apr.   4    26.55      65,200
               1945    Sept.22     33.30     220,000       1965     Oct.  23    26.01       62,100        1985     Aug.  29    21.74      29,600
               1946    Jan.    4   23.76     45,400        1966     Mar.  10    25.28       57,000        1986     Nov.  28    21.99      30,900
               1947    Jan.  26    22.16     30,900        1967     Aug.  29    20.84       26,300        1987     Mar.   7    29.06      96,500
               1948    Feb.  19    26.23     69,300        1968     Jan.  19    23.01       36,900        1988     Jan.  20    19.48      20,100

               1949    Dec.    5   24.12     47,800        1969     Feb.  27    21.78       32,500
               1950    Nov.    7   21.22     25,600        1970     Aug.  19    21.69       31,800
               1951    Apr.  14    20.36     21,600        1971     Mar.  10    23.98       47,900
               1952    Mar.  10    25.95     62,600        1972     June  29    24.09       47,200
               1953    Feb.  28    23.54     39,700        1973     Apr.    6   26.97       74,600

               1954    Jan.  29    25.76     60,500        1974     Apr.  12    22.45       35,800
               1955    Apr.  21    22.44     32,200        1975     Mar.  20    27.81       85,300
               1956    Mar.  22    20.46     22,000        1976     June  26    20.49       23,100
               1957    Apr.  13    21.58     30,000        1977     Dec.  20    22.56       36,500
               1958    Dec.    1   24.58     52,600        1978     Feb.    1   26.58       70,000@



































                                                                               51









                                                                         PEE DEE RIVER BASIN

                                                               02131150 CATFISH CANAL AT SELLERS, SC


                    LOCATION.--Lat 34*17104", long 79*26132", Marion County, Hydrologic Unit 03040201, on right downstream
                         wingwall of culvert on State Highway 38, 2.0 mi east of Sellers, 2.3 mi upstream from Stackhouse Creek, and
                         at mile 25.6.
                    DRAINAGE AREA.--27.4 m12.

                    PERIOD OF RECORD.--November 1966 to current year.

                    REVISED RECORDS.--WRD SC-77: Drainage area.

                    GAGE.--Water-stage recorder. Elevation of gage is 75 ft above National Geodetic             Vertical Datum of 1929 (from
                         topographic map).

                    REMARKS.--Records good.
                    EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 890 fts/s, Mar. 4, 1971, gage height, 9.15 ft.

                    STAGE-DISCHARGE RELATION.--Defined by current-meter measurements throughout entire range of discharges.
                          FLOOD-FREQUENCY    DATA (ft3/s)                           LOG-PEARSON TYPE III STATISTICS (LOG UNITS1
                          22 YEARS OF RECORD                                        Mean                        -    2.423
                          LOG-PEARSON TYPE     III                                  Standard Deviation          -    0.250
                              Q    -     263                                        Weighted Skew               -    0.085
                              Q2   =     429
                                5  =     557
                              Q10  =     738
                              Q25  =     887
                              Q50       1PO50
                              Q100 =


                                                                     Peak Stages and Discharges


                    Water    Date     Gage     Discharge       Water      Date      Gage     Discharge       Water     Date      Gage     Discharge
                                                                                                             year               height
                    year            height           3         year                 height        3                                            3
                                      (ft)       (ft /a)                            (ft)      (ft /a)                              ft)      (ft /8)


                    1967   June  24   3.33         67          1977     Mar. 22     5.35       204           1987     Mar. 2       7.25       354
                    1966   Jan.  11   4.22       120           1978     Jan. 26     5.12       192           1988     Aug. 25      5.17       288
                    1969   Oct.  20   7.98       413           1979     Sept. 7     @6.51      271
                    1970   Mar.  23   6.43       260           1980     Apr.  14    15.81      223
                    1971   Mar.   4   9.15       890           1981     Aug.  14    5.03       222

                    1972   Feb.   4   4.51       162           1982     June    5   5.96       269
                    1973   Feb.  15   6.84       304           1983     Mar.  18    9.04       830
                    1974   Aug.   7   8.39       557           1984     Her.  26    6.09       275
                    1975   Apr.   3   6.88       308           1985     Sept.12     5.06       223
                    1976   July  10   4.39       156           1986     Nov. 30     6.06       274






































                                                                                    52









                                                                    PEE DEE RIVER BASIN

                                                           02131309 FORK CREEK AT JEFFERSON, SC


              LOCATION.--Lat 34*38,1911, long 80-2312011, Chesterfield County, Hydrologic Unit 03040202, on upstream side, at
                    center of span on State Highway 151 bridge, 1.0 mi south of intersection of State Highways 765 and 151, at
                     Jefferson.
              DRAINAGE AREA.--24.3 m12.

              PERIOD OF RECORD.--October 1976 to current year.

              GAGE.--Water-stage recorder. Datum of gage is 302.68 ft above National Geodetic Vertical Datum of 1929.

              REMARKS.--Records good.
              EXTREMES FOR PERIOD OF RECORD. --Max 'mum discharge, 1,560 fts/s, Feb. 24, 1979, gage height, 7.89 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 862 ft3/a and graphically extended                      on
              logarithmic plotting paper.
                      FLOOD-FREQUENCY DATA (ft3/s)                           LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                      12 YEARS OF RECORD                                     Mean                           -   2.787
                      LOG-PEARSON TYPE   III                                 Standard Deviation             -   0.281
                        Q2    =      615                                     Weighted Skew                 - -0.041
                        Q 5   =   11060
                        Q10   -   1,400
                        Q25   '   1,880
                        Q50   =   2,280
                        Q100  =   2,700


                                                               Peak Stages and Discharges


              Water     Date    Gage      Discharge       Water      Date      Gage    Discharge       Water      Date      Gage     Discharge
              year             h7ight      (ft3/.)        year               height      (ft.3         year                height         3
                                  ft)                                          (ft)          /a)                            (ft)       (ft /a)


              1977    Dec. 16   7.36         1,130        1982     Jan.    1   5.96         539        1987      Jan. 19     6.43          694
              1978    Jan. 20   6.76           854        1983     Feb.  15    7.73        1,430       1988     Aug. 30      5.90          522
              1979    Feb. 24   7.89         1,560        1984     Mar.  29    5.55         432
              1980    Mar. 29   6.65           782        1985     Aug.  18    5.37         392
              1981    Feb. 11   4.51           256        1986     Nov.  30    4.00         194



















































                                                                             53











                                                                              PEE DEE RIVER BASIN

                                                                02131500 LYNCHES RIVER NEAR BISHOPVILLE,SC


                    LOCATION.--Lat 34*15'00", long 80*12150", Lee County, Hydrologic Unit 03040202, near center of span on
                          downstream side of bridge on U.S. Highway 15, 1.0 mi upstream from Seaboard Coast Line Railroad bridge, 2.9
                          mi northeast of Bisbopville, 3.0 mi downstream from Bells Branch, and at mile 89.5.
                    DRAINAGE AREA.--675 m12.

                    PERIOD OF RECORD.--May, 1942 to current year.

                    GAGE.--Water-stage recorder from May, 1942 to September, 1971. Partial record crest gage from October, 1971 to
                          current year.

                    REMARKS.--Records good except for period of no gage-height record which is poor.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 29,400 ft3/s, Sept. 19, 1945. (gage height, 22.35 ft, from
                         floodmark).
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 11,300 fts/s and extended by velocity-area
                          studies.
                           FLOOD-FREQUENCY DATA (ft3/5)                               LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                           45 YEARS   OF RECORD                                       Mean                                 3.824
                           LOG-PEARSON TYPE      III                                  Standard Deviation                   0.217
                               Q2     =   6,770                                       Weighted Skew                       -0.213
                               Q5     = 10,200
                               Q10    = 12,400
                               Q25    = 15,400
                               Q50    = 17 600
                               Q100   = 19:800

                                                                        Peak Stages and Discharges


                    Water      Date     Gage     Discharge      Water     Date        Gage     Discharge      Water       Date      Gage      Discharge
                    year              height     ,       ' I    year                 height        3          year                  height        3
                                        (ft)     .(ft3 /s)                            (ft)      (ft /s)                             (ft)       (ft /s)


                    1943    Jan. 21     15.66     7,210         1958      Jan. 27     15.41      7,260        1973      Apr.    4   17.40        12,400
                    1944    Mar. 22     17.43    12,400         1959      Apr. 15     14.75      6,400        1974      Apr.  10    13.80        4,600
                    1945    Sept.19     22.35    29,400         1960      Apr.  7     15.68      7,960        1975      July  16    15.99        8,980
                    1946    Dec.    29  14.06     3,980         1961      Feb. 27     15.90      9,320        1976      June  27    15.36        7,720
                    1947    Apr.    18  14.36     4,460         1962      Mar. 14     16.25     10,200        1977      Mar.  22    16.11        9,280

                    1948    Mar.    10  15.47     7,480         1963      Jan. 23     14.89      6,680        1978      Jan.  26
                    1949    Dec.    1   16.85    10,900         1964      Mar. 18     16.86     12,200        1979      Feb.  25    18.26        15,600
                    1950    Dec.    18  11.91     1,790         1965      Oct. 19     16.33     10,600        1980      Nov.  12    15.86        8,720
                    1951    Apr.    12  13.02     2,970         1966      Mar.  7     14 92      6,700        1981      Feb.  23    13.60        4,250
                    1952    Sept. 3     18.06    15,000         1967      Sept.12               17,400        1982      Jan.    5   15.69        8,380

                    1953    Feb.    19  13.86     4,350         1968      Jan. 13     15.63      8,260        1983        ---       18.36        16,000
                    1954    Apr.    4   14.73     5,800         1969      Apr. 22     14.35      5,700        1984      Mar.  31    15.12        7,010
                    1955    Apr.    17  15.40     7,720         1970      Mar. 2S     14.12      5,240        1985      Sept.19     12.17        2,230
                    1956    Mar.    20  14.40     5,230         1971      Mar.  6     16.28      9,700        1986      Nov. 30     14.04        5,080
                    1957    May.    15  13.97     4,520         1972      Apr.  4     11.79      1,860        1987      Mar. 1      12.16        2,210
                                                                                                              1988      Oct.  29    12.38        2,450

                           1Estimated by hydrographic comparison          with Lynches River at Effingham, station number 02132000


















                                                                                      54










                                                                   PEE DEE RIVER BASIN

                                                         02131990 CARTER CREEK AT EFFINGHAM, SC


             LOCATION.--Lat 34*03'51", long 79*46'03", Florence County, Hydrologic Unit 03040202, on upstream side of
                   culvert on U.S. Highway 301, 0.8 mi. northwest of Effingham and 0.9 mi upstream from Lynches River.
             DRAINAGE AREA.--8.28 mi2.

             PERIOD OF RECORD.--December 1966 to current year.

             GAGE.--Dual digital water-stage and rainfall recorders, December 1966 to October 1974. Partial record crest
                   gage, December 1974 to present.

             REMARKS.--Records good.
             EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 898 ft3/s, Mar 3, 1971.
             STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 715 ft3/s and graphically extended on
                   logarithmic plotting paper.
                    FLOOD-FREQUENCY DATA (ft3     /s)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                    18 YEARS OF RECORD                                      Mean                           -    2.319
                    LOG-PEARSON TYPE    III                                 Standard Deviation             -    0.282
                        Q           210                                     Weighted Skew                 - -0.065
                        Q           361
                                    477
                        Q10         640
                        Q25         773
                        Q50
                        Q100        915


                                                               Peak Stages and Discharges


             Water     Date      Gage    Discharge       Water      Date      Gage     Discharge       Water      Date     Gage      Discharge
             year             height                     year               height                     year                height
                                  ft)     (ft  3/a)                           (ft)       (ft3/s)                            (ft)      (ft3/s)


             1969    Aug.   5                  91.4      1975     Jan.  20    3.13         63,8        1981     July    3    5.20       222
             1970    Mar.  22               274          1976     June  27    5.73        287          1982     June    5    5.20       222
             1971    Mar.   3               898          1977     Mar.  22    5.33        237          1983     Mar.  24     6.48       409
             1972    May.  18               176          1978     Jan.  26    5.31        235          1984     Feb.  21     3.61        96.0
             1973    Feb.   2               326          1979     Mar.  24    5.73        288          1987     Mar.    7    5.97       321

             1974    Aug.   5               374          1980     Mar.  13    5.17        219          1988     Mar.  11     3.74       104















































                                                                            55










                                                                        PEE DEE RIVER BASIN

                                                             02132000 LYNCHES RIVER AT EFFINGHAM, SO
                                                      (National stream-quality accounting network station)

                   LOCATION.--Lat 34*0310511, long 79*45115", Florence County, Hydrologic Unit 03040202, on left bank at downstream
                         side of bridge an U.S. Highway 52, 75 ft upstream from Seaboard Coast Line Railroad Bridge, 1.0 mi south of
                         Effingham, and at mile 43.4.
                   DRAINAGE AREA.--1,030 m12, approximately.

                                                                      WATER-DISCHARGE RECORDS

                   PERIOD OF RECORD.--August 1929 to current. Gage-height records collected at same site since 1891 are contained
                         in reports of National Weather Service.

                   GAGE.--Water-stage recorder. Datum of &age is 58.49 ft above National Geodetic Vertical Datum of 1929. Prior to
                         Sept. 7, 1934, nonrecording gage at same site and datum.

                   REMARKS.--Records good.
                   EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 25,000 ft3/s, Sept. 22, 1945, gage height, 21.21 ft.
                   STAGE-DISCHARGE RELATION, --Defined by curzent-meter measurements below 16,900 ft3/s and graphically extended
                   on logarithmic plotting paper.
                          FLOOD-FREQUENCY DATA (ft3/s)                           LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                          62 YEARS OF RECORD                                     Mean                          -    3.750
                          LOG-PEARSON TYPE   III                                 Standard Deviation            -    0.254
                             Q2    =   5,610                                     Weighted Skew                 -    0.044
                             Q5    = 9,190
                             Q  10 = 11,900
                                   = 15,800
                             Q25   =
                             Q50     18 900
                             Q100  = 22:300

                                                                    Peak Stages and Discharges


                   Water     Date    Gage     Discharge       Water      Date      Gage    Discharge       Water      Date      Gage    Discharge
                   year             height                    year               height         3          year                height        3
                                     (ft)       (ft3/s)                            (ft)       (ft Is)                           (ft)      (ft /8)


                   1892    Jan.   24   17.50                  1927     Mar. 12      8.80                   1962     Mar. 18     15.83       7,800
                   1893    Sept. 4     16.00                  1928     Sept.24     19.50      16,100       1963     Jan. 27     15.01       6,400
                   1894    Aug.   11   16.20                  1929     Mar.  10    17.50      10,800       1964     Mar. 22     15.75       7,800
                   1895    Oct.   15   16.50                  1930     Oct.    7   19.25      15,200       1965     Oct. 22     15.87       7,940
                   1896    July   15   16.00                  1931     Aug.  31    10.40       2,330       1966     Mar. 7      15.38       7,020

                   1897    Feb.   13   14.40                  1932     Jan.  15    13.70       4,780       1967     Sept.16     14.08       5,570
                   1898    Aug.   30   13.70                  1933     Oct.  24    15.30       6,830       1968     Jan.  18    14.26       5,420
                   1899    Feb.   12   17.20                  1934     June  13    10.30       2,300       1969     Apr.  26    12.52       3,790
                   1900    Apr.   25   16.60                  1935     Sept.14     12.58       3,750       1970     Mar.  31    12.76       3,980
                   1901    June   22   17.20                  1936     Apr.  12    18.66      14,400       1971     Mar.   5    17.46      11,700

                   1902    Feb.   8    15.00                  1937     May     2   14.09       5,200       1972     Jan.  18    14.21       5,360
                   1903    Feb.   14   16.90                  1938     Aug.    2   13.72       4,880       1973     Feb.   5    16.68       9,710
                   1904    Aug.   14   12.80                  1939     Mar.    4   17.39      11,200       1974     Aug.  15    12.18       3,550
                   1905    Feb.   22   13.50                  1940     Aug.  18     9.43       1,98a       1975     July  20    16.69       9,740
                   1906    June   17   14.60                  1941     July  18    12.22       3,420       1976     June  28    13.37       4,500

                   1907    July   5    10.00                  1942     May   28    14.39       5,640       1977     Mar.  20    13.81       4,920
                   1908    Aug.   30   20.00    18,000        1943     Jan.  26    13.48       4,600       1978     Jan.  26    16.09       8,380
                   1909    June   12   12.90                  1944     Mar.  26    16.42       9,050       1979     Mar.   2    17.45      11,100
                   1910    June   18   13.10                  1945     Sept.22     21.21      25,000       1980     Apr.   3    16.69       9,380
                   1911    Mar.   16     9.50                 1946     Jan.    2   13.10       4,200       1981     Feb.  21    10.23       2,430

                   1912    Feb.   21   16.50                  1947     Apr.  16    13.57       4,700       1982     Jan.  10    15.28       6,850
                   1913    Mar.   21   25.70                  1948     Feb.  16    24.67       6,180       1983     Mar.  24    17.19      10,400
                   1914    Mar.   6    12.80                  1949     Dec.    5   15.92       8,320       1984     Apr.   5    13.54       4,670
                   1915    Jan.   25   13.60                  1950     Dec.  24     8.43       1,630       1985     Feb.  11    11.92       3,550
                   1916    July   20   18.70                  1951     Apr.  17     9.81       2,120       1986     Nov.  30    12.57       3,950

                   1917    June   18   12.00                  1952     Sept. 6     16.76      10,90D       1987     Mar.   7    17.07      10,200
                   1918    May    18   12.00                  1953     Feb.  23    12.35       3,920       1988     Jan.  28    10.02       2,410
                   1919    July   29   16.00                  1954     Apr.    8   12.35       3,720
                   1920    Mar.   22   11.90                  1955     Apr.  22    12.80       3,920
                   1921    Feb.   16   16.50                  1956     Mar.  25    11.41       2,840

                   1922    Mar.   12   17.30                  1957     May   21    10.09       2,260
                   1923    Mar.   24   12.60                  1958     Feb.    1   13.53       5,290
                   1924    Apr.   13   13.40                  1959     Feb.  12    12.74       3,840
                   1925    Jan.   21   17.30                  1960     Apr.  10    16.31       8,840
                   1926    Apr.   18   14.30                  1961     Mar.    3   15.74       7,600







                                                                                 56









                                                                   PEE DEE RIVER BASIN

                                                     02132100 TWO MILE BRANCH NEAR LAKE CITY, SC


              LOCATION.--Lat 33'53138", long 79*45138", Florence County, Hydrologic Unit 03040202, at culvert on U.S. Highway
                   378 By-Pass, and 1.4 mi north of Lake City.
              DRAINAGE AREA.--19.0 m12.

              PERIOD OF RECORD.--October 1976 to current year.

              GAGE.--Crest stage partial record station.

              REMARKS.--Records good.
              EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 1,200 ft3/s, Mar. 13, 1980, gage height, 7.31 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-metex measurements below 480 ft3/s and graphically extended on
                   logarithmic plotting paper.
                    FLOOD-FREQUENCY DATA (ft3
                                                ,/a)
                                                                            &PEARSON TYPE III STATISTICS (LOG UNITS)
                    13 YEARS OF RECORD                                         T_                         -  2.388
                    LOG-PEARSOK TYPE    III                                 Standard Deviation            =  0.276
                       Q2    =     236                                      Weighted  Skew                -  0.334
                       Q5    =     412
                       Q  10 =     563
                       Q25   -     798
                       Q50       1,010
                       Q100      1,250

                                                              Peak Stages and Discharges


              Water    Date      Gage    Discharge       Water     Date      Gage     Discharge       Water     Date      Gage     Discharge
              year            height         3           year               height        3           year               height        3
                                 (ft)     (ft /a)                            (ft)      (ft /a)                            (ft)      (ft /a)


              1976   June 28     5.15       210          1981    July    3   4.46        102          1986    Nov. 30     4.37         95
              1977   Mar. 20     4.87       156          1982    Jan.  10    5.46        285          1987    Sept.10     5.67        346
              1978   Jan. 26     5.48       290          1983    July  10    5.73        364          1988    Mar. 11     5.43        278
              1979   Feb. 24     5.31       248          1984    Mar.  31    5.01        182
              1980   Mar. 13     7.31      1,200         1985    Aug.  18    5.21        222














































                                                                            57











                                                                          PEE DEE RIVER BASIN

                                                           02132500 LITTLE PEE DEE RIVER NEAR DILLON, SC


                     LOCATION.--Lat 34*2411711, long 79*20'25", Dillon County, Hydrologic Unit 03040204, near center of span on
                          downstream side of bridge on State Highway 9, 1.9 mi southeast of Dillon, 3.9 mi (revised) upstream from
                          Maple Swamp, and at mile 88.3.
                     DRAINAGE AREA.--524 m12.

                     PERIOD OF RECORD.--March 1939 to current year.

                     GAGE.--Water-stage recorder prior to Sept. 1971, crest-stage gage thereafter. Datum of gage is 75.14 ft National
                          Geodetic Vertical Datum of 1929 (Levels by South Carolina Highway Department). Prior to July 31, 1967,
                          nonrecording gage and crest-stage gage at same site and datum.

                     REMARKS.--Records good.
                     EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 9,810 ft3/s, Sept. 20, 1945, gage height, 14.64 ft.
                     STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 6050 ft3/s and graphically extended on
                         logarithmic platting papaer.
                           FLOO@XOUERCY DATA (fts/s)                               LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                           49  Y       F ECORD                                     Mean                           -    3.404
                           LOG-PEARSON TYPE     III                                Standard Deviation             -    0.223
                               Q2   =   2,490                                      Weighted Skew                  -    0.203
                               Q5   =   3,880
                               Q    =   41950
                               Q25      6,450
                               Q50      7,690
                               Q100     9,030

                                                                      Peak Stages and Discharges


                     Water    Date     Gage     Discharge       Water      Date       Gage   Discharge        Water     Date      Gage     Discharge
                     year            height                     year               height                     year                height
                                       (ft)      (ft3 /s)                             (ft)     (ft3/s)                             (ft)       (ft3/s)


                     1940   Feb. 13     8.45      1,080         1960     Oct.  17     11.42      4,650        1980     Mar. 13        9.69      2,320
                     1941   July 19     9.60      2,130         1961     Mar.    1    9.65       2,240        1981     Aug. 11        8.74      1,300
                     1942   Mar. 13    10.12      2,770         1962     Feb.  26     9.71       2,350        1982     Jan.    5    10.51       3,300
                     1943   July 12     9.46      2,020         1963     Jan.  23     10.73      3,440        1983     Apr.   10    12.38       6,130
                     1944   Mar. 25     9.55      2,130         1964     Feb.  22     10.44      3,050        1984     Apr.    5    10.43       3,210

                     1945   Sept.20    14.64      9,810         1965     Oct.    7    12.26      5,500        1985     Sept.19      9.98        2,660
                     1946   Jan.   3    9.40      2,020         1966     June  12     12.07      5,220        1986     Nov. 30      9.69        2,320
                     1947   Apr.  22    9.78      2,470         1967     Aug.  27     8.80       1,370        1987     Feb. 28     11.50        4,710
                     1948   Feb.  15   10.79      3,750         1968     Jan.  14     9.72       2,250        1988     Jan.   28    8.51        1,220
                     1949   Nov.  30   10.47      3,330         1969     Aug,    5    10.31      2,890

                     1950   Nov.   7    8.06         915        1970     Mar.  24     9.60       2,200
                     1951   Apr.  11    8.52      1,200         1971     Mar.    5    12.20      5,820
                     1952   Sept. 6     8.87      1,540         1972     May   20     8.56       1,150
                     1953   May    9    9.58      2,240         1973     Feb.  19     12.54      5,960
                     1954   Apr.  13    9.01      1,630         1974     Aug.  12     9.90       2,560

                     1955   Apr.  17   10.66      3,240         1975     Feb.  18     10.65      3,500
                     1956   Feb.   9    9.22      1,820         1976     Feb.    4    8.93       1,500
                     1957   June  12              1,200         1977     Jan.  10     9.82       2,460
                     1958   Dec.   1   10.32      3,090         1978     Jan.  30     9.76       2,400
                     1959   Apr.  17   10.04      2,710         1979     Feb.  24     10.49      3,290























                                                                                   58









                                                                     PEE DEE RIVER BASIN

                                                  02135000 LITTLE PEE DEE RIVER AT GALIVANTS FERRY, SC


              LOCATION.--Lat 34*03'25", long 79*14'5011, Horry-Marion County Line, Hydrologic Unit 03040204, near left bank
                   on downstream side of bridge on U.S. Highway 501, at Galivants Ferry, 1.0 mi downstream from Lake Swamp, and
                   at mile 41.7.
              DRAINAGE AREA.--2,790 m12, approximately.

              PERIOD OF RECORD.--October 1941 to current year. Monthly discharge only for some periods, published in WSP
                   1303.

              GAGE.--Water-stage recorder and data collection platform. Datum of gage is 23.95 ft above National Geodetic
                   Vertical Datum of 1929. Prior to July 26, 1967, nonrecording gage and crest-stage gage at same site and
                   datum.

              REMARKS.--Records good.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 27,600 ft3/s, Oct. 9, 10, 1964, gage height, 13.01 ft.

              EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage known, 16.0 ft, in September 1928, from floodmark set by local
                   resident.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 26,100 fts/s and graphically extended
              on logarithmic plotting paper.
                    FLOOD-FREQUENCY DATA (ft3     /s)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                    47 YEARS OF RECORD                                      Mean                           -    4.079
                    LOG-PEARSON TYPE     III                                Standard Deviation             =    0.195
                        Q2   =  12,100                                      Weighted Skew                 = -0.171
                        Q5   =  17,600
                        Q10     21,100
                        Q25     25,600
                        Q50     28,900
                        Q100    32,200


                                                               Peak Stages and Discharges


              Water    Date     Gage     Discharge       Water      Date       Gage    Discharge       Water      Date     Gage      Discharge
              year             height                    year               height                     year               height
                                (ft)      (ft 3 /s)                            (ft)     (ft3 /a)                            (ft)      (ft3 /a)


              1928   Sept.--    16.00                    1961     Apr. 18      10.09    12,500         1981     Aug.  23     10.67     11,400
              1942   Mar. 14     9.87     11,000         1962     Mar. 18      9.95     11,100         1982     Feb.  20     10.87     11,400
              1943   July 18     9.76     10,500         1963     Jan. 27      10.57    15,200         1983     Mar.  22     12.72     24,400
              1944   Feb. 24     9.95     11,500         1964     Sept.17      10.30    13,400         1984     Apr.    5    10.44     10,500
              1945   Sept.23    13.23     26,800         1965     Oct.   9     13.01    27,600         1985     Feb.  15       9.45     6,750

              1946   Jan.   2   10.74     15,200         1966     Mar.  11     10.68    15,300         1986     Dec.  13       8.75     5,010
              1947   Apr.  20    9.69     10,600         1967     Feb.  20     8.66       6,090        1987     Mar.    6    11.94     18,200
              1948   Feb.  18   11.24     17,600         1968     Jan.  19     9.64     10,300         1988     Jan.    8      8.77     6,110
              1949   Dec.   4   10.62     14,800         1969     Aug.  10     11.07    17,200
              1950   July  18    8.08      4,310         1970     Mar.  27     9.71     10,600

              1951   Apr.  16    8.32      4,890         1971     Mar.   8     12.29    25,000
              1952   Apr.   2    8.82      6,690         1972     Feb.   8     10.02    12,000
              1953   Mar.  19    9.47      9,730         1973     Apr.  10     11.86    22,100
              1954   Apr.  15    9.10      7,930         1974     Aug.  12     11.79    21,600
              1955   Sept.11    10.36     13,900         1975     Feb.  26     11.13    13,000

              1956   Feb. 14     9.48      9,270         1976     Feb.   4     9.91       8,030
              1957   Feb. 13     8.98      7,510         1977     Mar.  28     10.69    10,900
              1958   Apr.   7   10.00     12,000         1978     June  15     11.27    12,200
              1959   Mar.  10   11.21     17,600         1979     Sept.11      12.51    20,200
              1960   Aug.   2   10.66     14,800         1980     Apr. 1       11.60    l4t800






















                                                                            59










                                                                         PEE DEE RIVER BASIN
                                                          02135300 SCAPE ORE SWAMP NEAR BISHOPVILLE, SC


                   LOCATION.--Lat 34*09102", long 80*18'18", Lee County, Hydrologic Unit 03040205, at bridge on U.S. Highway 15,
                         0.1 mi downstream from Beaverdam Creek, 0.9 mi upstream from Seaboard Coast Line Railroad bridge, and 5.8 mi
                         southwest of Bishopville.
                   DRAINAGE AREA.--96.0 m12.

                   PERIOD OF RECORD.--July 1968 to current year.

                   GAGE.--Water-stage recorder. Datum of gage is 164.53 ft above National Geodetic Vertical Datum of 1929.

                   REMARKS.--Records good.
                   EXTREMES FOR PERIOD OF RECORD. --Maxirm,m discharge 1,700 ft3/s, Sept. 7, 1979, gage height, 8.54 ft.
                   STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 1,330 fts/s and graphically extended
                         on logarithmic plotting paper.
                          FLOOD-FREQUENCY DATA (ft3    /a)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS1
                          20 YEARS OF RECORD                                      Mean                           .   2.828
                          LOG-PEARSON TYPE   III                                  Standard Deviation             -   0.203
                             Q2    =      676                                     Weighted Skew                 - -0.050
                             Q5    =      999
                             Q10   =   1,220
                             Q 25  =   11510
                                       1,740
                             Q50   =   1,960
                             Q100

                                                                    Peak Stages and Discharges


                   Water     Date     Gage    Discharge        Water      Date     Gage     Discharge       Water       Date     Gage     Discharge
                   year             height         3           year               height         3          year                 height         3
                                      (ft)      (ft /a)                            (ft)       (ft /a)                            (ft)       (ft /a)


                   1969    Feb.19     6.90         630         1976     June 20    6.60          490        1983     Mar.  19     7.82         1,150
                   1970    Mar.24     6.78         570         1977     Dec.  18   6.57          478        1984     May.  31     5.95          662
                   1971    Mar. 5     8.09        1,330        1978     Apr.  28   7.02          702        1985     Aug.  19     6.59          486
                   1972    Jan.15     7.14         764         1979     Sept. 7    8.54         1,700       1986     Aug.  22     6.83          574
                   1973               7.28         848         1980     Mar. 31    6.99          684        1987     Mar.    3    7.27          786

                   1974    Feb.19     6.07         273         1981     Feb.  13   5.96          278        1988     Aug.  30     7.90         1,180
                   1975    Apr. 5     7.26         846         1982     Jan.    4  6.61          494











































                                                                                  60









                                                                    PEE DEE RIVER BASIN

                                                          02135500 BLACK RIVER NEAR GABLE, SC


              LOCATION.--Lat 33'54100", long 80'09'55", Sumter County, Hydrologic Unit 03040205, near left bank on downstream
                    side of McBride Crossing on U.S. Highway 378, 1.0 mi downstream from Church Branch, 6.3 mi northwest of
                    Gable, and at mile 123.1.
              DRAINAGE AREA.--401 m12.

              PERIOD OF RECORD.--June 1951 to June 1966, April 1972 to current year.

              GAGE.--Water-stage recorder. Elevation of gage is 95 ft above National Geodetic Vertical Datum of 1929, (from
                    topographic map). Crest-stage station Oct. 1970 to Sept. 1971 at same site and datum. Prior to Dec. 9,
                    1955, wire-weight gage at same site and datum.

              REMARKS.--Records good.
              EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 12,500 ft3/s, Mar. 5, 1971, gage height, 6.82 ft; maximum gage
                    height 6.92 ft, June 13, 1973.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 7,970 fts/s and graphically extended
              on logarithmic plotting paper.
                     FLOOD-FREQUENCY DATA (ft3    /s)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     32 YEARS OF RECORD                                     Mean                          .    3.421
                    LOG-PEARSON TYPE     III                                Standard Deviation            -    0.288
                        Q2    =  2,770                                      Weighted Skew                - -0.434
                        Q 5   =  41650
                        Q10   =  5,950
                        Q     =  7,590
                        Q 25  =  8 790
                          50  =  9:970
                        Q100

                                                              Peak Stages and Discharges
                                                                          I


              Water     Date    Gage     Discharge       Water      Date      Gage    Discharge       Water      Date     Gage     Discharge
              year             height        3           year               height     (ft3           year                height        3
                                (ft)      (ft Is)                             (ft)          /a)                           (ft)      (ft /a)


              1952    Sept. 3    5.22      4,150         1962     Feb. 25     4.33      2,340         1977     Dec.  16    4.46      1,840
              1953    Feb. 28    3.95      1,660         1963     Jan. 23     4.45      2,520         1978     Jan.  28    4.56      2,080
              1954    Dec. 17    3.30        742         1964     Sept. 1     5.80      6,650         1979     Sept. 7     5.68      4,320
              1955    Apr. 18    3.26        518         1965     June 16     6.10      8,300         1980     Mar.  31    4.98      2,760
              1956    Feb.  9    3.58        835         1966     Mar.   6    5.13      3,830         1981     July    4   5.03      2,860
              1957    Mar. 28    3.77        713         11971    Mar.   5    6.82      12,500        1982     Feb.  19    4.60      2,200
              1958    Apr. 17    5.16      3,780         1973     June 13     6.92      7,900         1983     Mar.  19    5.92      4,950
              2959    Mar.  8    4.44      2,320         1974     Aug.   6    4.79      2,540         1984     July  24    4.79      2,560
              1960    Apr.  7    5.15      3,780         1975     Feb. 21     5.09      2,880         1985     Aug.  19    4.71      2,420
              1961    Aug.  6    5.08      3,670         1976     June 20     5.12      3,060         1986     Nov.  23    5.97      5,080

                                                                                                      1987     Mar.   2    5.21      3,370
                                                                                                      1988     Sept. 3     4.24      1,750

              1
               Stage-discharge relation altered by bridge construction.































                                                                            61










                                                                               PEE DEE RIVER BASIN

                                                                 02136000 BLACK RIVER AT KINGSTREE, SC

                      LOCATION.--Lat 33*3914011, long 79*50'10", Williamsburg County, Hydrologic Unit 03040205, on left bank at
                           downstream side of bridge on U.S. Highway 52 at Kingstree, 1.0 mi downstream from Kingstree Swamp Canal, and
                           at mile 86.7.
                      DRAINAGE AREA.--1,252 m12.

                      PERIOD OF RECORD.--August 1929 to current year. Gage-height records collected at same site since 1894 are
                           contained in reports of National Weather Service.

                      REVISED RECORDS.--WSP 1032: 1928(m), drainage area WSP 1333: 1930(m), 1931, 1936.

                      GAGE.--Datum of gage is 25.66 ft above National Geodetic Vertical Datum of 1929. Prior to Nov. 7, 1934,
                           nonrecording gage at same site and datum.

                      REMARKS.--Records good.
                      EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 58,000 ft3/s, June 14, 1973, gage height, 19.77 ft.
                      STAGE-DISCHARGE RELATION. --Defined by current-meter measurement's below 44,300 ft3/a and graphically extended
                           on logarithmic plotting paper.
                             FLOOD      UENCY DATA (ft3/s)                         STATISTICS (LOG UNITS)
                                YEXQ
                             61       OF RECORD                                  Mean                       -    3.853
                           1GRAPHICAL   SOLUTI5N_                                Standard Deviation         -    0.276
                                Q2   =   5,700                                   2Station Skew              -    2.365
                                Q5   =  10,500
                                Q10  =  16,000
                                Q25  =  32,500
                                Q50  =  52,500
                                Q100 =  80,000
                                                                       Peak Stages and Discharges


                      Water   Date      Gage    Discharge      Water       Date     Gage     Discharge       Water     Date      Gage      Discharge
                      year            height                   year                height                    year               height
                                        (ft)     (ft3 /3)                           (ft)        (ft3 /a)                          (ft)       (ft3/a)


                      1893    Sept.11    14.50                 1928      Sept.21      18.00     41,600       1963      Jan. 27     11.67       4,920
                      1894    Aug. 9     12.50                 1929      Feb.  22     11.70       6,060      1964      Sept. 5     12.52       7,310
                      1895    Feb. 5     11.60                 1930      Jan.  25     12.20       7,760      1965      Oct.   7    14.73      17,900
                      1896    Feb.   14  10.70                 1931      Jan.  20     10.10       3,120      1966      Mar.   8    13.00       9,240
                      1897    Feb.   15  10.30                 1932      Mar.  16      8.60       1,550      1967      Jan. 13       9.08      1,680

                      1898    Sept. 7     9.90                 1933      Feb.  19     11.20       4,600      1968      June 17     10.45       3,080
                      1899    Feb.   21  11.60                 1934      June  12      6.80         908      1969      May  26     11.53       4,690
                      1900    Apr.   26  11.90                 1935      Sept.17       9.83       2,510      1970      Mar. 28     12.42       6,520
                      1901    June   1   12.00                 1936      Apr.  13     13.07     11,800       1971      Mar.   7    15.22      23,600
                      1902    Mar.   5   10.10                 1937      Feb.    4    11.53       5,440      1972      Feb.   7    12.50       7,120

                      1903    June   16  11.80                 1938      Apr.  14     12.00       6,730      1973      June 14     19.77      58,000
                      1904    Feb.   28  10.00                 1939      Mar.    4    13.21     12,200       1974      Feb. 22     11.22       3,860
                      1905    May    9   10.90                 1940      Feb.  23      9.70       2,400      1975      Feb. 25     12.42       7,120
                      1906    June   22  11.80                 1941      July  24     11.32       5,000      1976      July   9    12.24       6,490
                      1907    Oct.   27  10.10                 1942      Mar.    9    12.26       8,160      1977      Mar. 18     11.43       4,260

                      1908    May    3   10.40                 1943      Mar,  29     10.44       3,310      1978      Jan. 29     12.16       6,230
                      1909    July   17   9.40                 1944      Mar.  27     11.93       6,680      1979      Sept.11     12.88       8,880
                      1910    June   22  11.40                 1945      Sept.20      16.07     29,100       1980      Mar. 23     12.68       8,060
                      1911    Oct.   22   8.20                 1946      Jan. 2       11.62       5,780      1981      July 12       9.09      1,520
                      1912    Jan.   12  13.30                 1947      Apr. 19      12.22       7,760      1982      Jan.   7    11.30       4,250

                      1913    Mar.   19  12.90                 1948      Feb.  14     12.81     10,400       1983      Mar. 21     14.05      15,200
                      1914    Mar.   9   11.20                 1949      Dec.    2    12.50       9,020      1984      Aug.   1    12.99       9,350
                      1915    May    16  12.70                 1950      Sept.12        9.78      2,510      1985      Feb. 14     10.50       2,940
                      1916    July   17  15.50                 1951      Apr.    9     9.63       2,300      1986      Nov. 28     12.59       7,720
                      1917    Jan.   30  10.90                 1952      Sept.   7    11.61       5,780      1987      Mar.   5    12.92       9,050

                      1918    May    19  12.00                 1953      Mar.    3    11.44       5,240      1988      Mar. 16     10.38       2,710
                      1919    July   28  12.50                 1954      Jan.    4     9.09       1,860
                      1920    Apr.   7   10.90                 1955      Sept.   9    10.79       3,900
                      1921    May    22  11.10                 1956      Mar.    5     9.96       2,670
                      1922    Mar.   14  12.70                 1957      Mar.  29      8.92       1,590

                      1923    Oct.   25  10.20                 1958      Apr.  19     13.54     11,800
                      1924    July   6   14.60                 1959      Mar.    9    13.58     12,000
                      1925    Jan.   21  15.20                 1960      Dec.  22     12.65       7,420
                      1926    Feb.   10   9.90                 1961      Apr.  18     12.97       9,020
                      1927    Aug.   19  10.50                 1962      Mar.    1    11.70       5,020

                           iThe frequency relation for this stream had         a sharp break at about 10-year recurrence interval where storage
                       effect is reduced by water reaching the banks ot the overflow section. This is verified by the station rating;
                       therefore, the flood frequency was determined graphically.
                           2Station skew computed using graphical frequency relation.

                                                                                      62








                                                                    SANTEE RIVER BASIN

                                                       02146000 CATAWBA RIVER NEAR ROCK HILL, SC


              LOCATION.--Lat 34*59'05", long 80'58'27", York County, Hydrologic Unit 03050103, on right bank, at downstream
                    side of bridge on U.S. Highway 21, 3.5 mi downstream from Lake Wylie Dam, 5.0 mi northeast of Rock Hill, 7.5
                    mi upstream from Sugar Creek, and at mile 137.6.
              DRAINAGE AREA.--3,050 m12, approximately.

              PERIOD OF RECORD.--September 1895 to September 1903, April 1942 to current year. Monthly discharge only for some
                    periods, published in WSP 1303.

              REVISED RECORDS.--WSP 1303: 1895-1903, WSP 1333: 1942-43(M), 1953(M). WSP 1623: 1942-51 (yearly runoff).

              GAGE.--Water-stage recorder. Datum of gage is 485.82 ft above National Geodetic Vertical Datum of 1929.
                    Sept. 23, 1895, to July 31, 1903, nonrecording gage at Southern Railway bridge, 2.0 mi downstream, at
                    different datum.
              REMARKS. --Records good. Flow regulated by Lake Wylie, usable capacity, 2,520,500,000 ftS and other power plants
                  above station.
              EXTREMES FOR PERIOD OF RECORD. --Maximurn discharge, 151,000 ft3/s, May 23, 1901, gage height, 24.15 ft, site and
                    datum then in use.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 78,000 fts/s and graphically extended
                 on logarithmic plotting paper.

                                                               Peak Stages and Discharges


              Water     Date    Gage     Discharge       Water      Date       Gage    Discharge       Water      Date      Gage      Discharge
              year             height         3          year                height         3          year               height          3
                                  ft)      (ft /a)                             (ft)     (ft /s)                             (ft)      (ft /a)


              1896    July 10     15.20     71,500       1954     Jan.  23     16.01     51,000        1974     Apr.   6     10.31        25,200
              1897    Feb.    7   14.80     68,500       1955     Apr.  15      7.69     14,200        1975     Mar.  15     17.57        62,400
              1898                9.00      30,600       1956     Apr.  16      7.77     14,600        1976     Mar.   8      7.47        13,400
              1899    Mar. 20     18.00     95,000       1957     Apr.   7     12.93     36,100        1977     Oct.   9     16.57        55,400
              1900                12.30     50,000       1958     Apr.  28     15.82     50,OQO        1978     Nov.   7     13.44        39,000

              1901    May  23     24.15    151,000       1959     Dec.  30     10.39     25,100        1979     Feb.  25     13.86        43,300
              1902    Dec. 30     19.70    108,000       1960     Feb.   6     15.80     50,000        1980     Apr.  17      9.40        21,100
              1903    Mar. 24     18.00     93,800       1961     Feb.  25      9.49     21,300        1981     Jan.   5      7.47        13,300
              1942    Sept. 8     10.61     25,900       1962     Jan.   7     15.70     49,500        1982     Jan.   4     11.31        30,400
              1943    July 10     16.99     56,100       1963     Mar.   6     10.73     26,300        1983     Apr.  10     10.86        28,100

              1944    Sept.30     11.55     30,200       1964     Apr.   8     13.25     37,500        1984     Apr.  10     11.79        32,900
              1945    Sept.19     20.84     76,800       1965     Oct.  17     14.64     44,700        1985     Feb.   2      7.55        13,600
              1946    Feb. 11     15.05     46,000       1966     Mar.   5      7.66     15,000        1986     Nov.  22     10.72        27,500
              1947    Jan. 20     13.57     39,300       1967     Aug.  23     13.53     39,200        1987     Mar.   1     12.06        34,300
              1948    Mar. 31     13.63     39,300       1968     Jan.  11      7.74     15,000        1988     Feb.  17      7.52        13,500

              1949    Nov. 28     17.79     60,200       1969     Feb.   3      7.72     14t9OO
              1950    Nov.    1   10.03     23,600       1970     Aug.  13      7.84     15,400
              1951    Jan. 23     7.49      13,600       1971     May   16     11.75     31,000
              1952    Mar.   4    16.96     56,100       1972     June  23     10.01     24,000
              1953    Mar. 24     13.49     38,900       1973     May   30     12.44     33,800

































                                                                             63











                                                                          SANTEE RIVER BASIN

                                                              02147000 CATAWBA RIVER NEAR CATAWBA, SC


                    LOCATION.--Lat 34*5110911, long 80'52'06", York County, Hydrologic Unit 03050103, on right bank, 60 ft
                          downstream from Seaboard Coast Line Railroad bridge, 2CO ft downstream from Twelvemile Creek, 2.5 mi east
                          of Catawba, and at mile 122.8.
                    DRAINAGE AREA.--3,530 m12, approximately.

                    PERIOD OF RECORD.--October 1968 to current year. Annual peak stages from June 1906 to December 1948.

                    GAGE.--Water-stage recorder and data collection platform. Datum of gage is 446.18 ft above National Geodetic
                          Vertical Datum of 1929 (levels by Bowaters Carolina Corporation). June 1906 to Dec. 21, 1948, nonrecording
                          gage at site 2.1 mi downstream at different datum.
                    REMARKS. --Records good. Flow regulated by Lake Wylie, usable capacity, 2,520,500,000 ft3 and other powerplants
                          above the station.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 73,600 ft3/s, Oct. 9, 1976, gage height, 23.81 ft.

                    EXTREMES FOR OUTSIDE PERIOD OF RECORD.--Maximum stage known since June 1906, 40.4 ft, July 16, 1916 at site and
                          datum then in use, from records furnished by the National Weather Service.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 63,300 ft3/s and graphically extended
                         on logarithmic plotting paper.

                                                                     Peak Stages and Discharges


                    Water    Date     Gage      Discharge       Water      Date      Gage    Discharge        Water     Date      Gage     Discharge
                    year             height         3           year                 height       3           year                height        3
                                       (ft)      (ft Is)                             (ft)      (ft /5)                            (ft)       (ft /8)
                    21901    May 23     124.80                  1976     Dec.  31     8.48     15,700         1987     Mar. 1      21.10       59,200
                     1949    Nov.29     19.00                   1977     Oct.    9   23.81     73,600         1988     Dec.28       9.23       17,900
                     1968    Jan.11     11.92     23,000        1978     Jan.  26    18.12     47,500
                     1969    Feb. 3       9.79    18,100        1979     Feb.  25    19.16     51,700
                     1970    Aug.13     10.22     19,200        1980     Mar.  29    14.00     32,300

                     1971    May 16     14.01     28,500        1981     Feb.  19      8.08    14,400
                     1972    Oct.17     12.15     23,900        1983     Apr.  10    13.40     30,700
                     1973    Apr. 1     17.16     37,500        1984     Dec.  12    15.05     36,300
                     1974    Apr. 6     13.43     27,100        1985     Feb.    2   11.74     25.400
                     1975    Mar.15     21.75     63,400        1986     Nov.  22    15.80     39,000

                          lFrom information   by  U.S. Weather Bureau.
                          2No record Jan I to Jun 30.





























                                                                                     64









                                                                     SANTEE RIVER BASIN

                                                        02147500 ROCKY CREEK AT GREAT FALLS, SC


              LOCATION.--Lat 34*3314511, long 80*55,00". Chester County. Hydrologic Unit 03050103, on left bank, 350 ft
                    downstream from Turkey Branch, 1.0 mi west of Great Falls, and at mile 1.8.
              DRAINAGE AREA.--194 mi2.

              PERIOD OF RECORD.--February 1951 to September 1981, August 1986 to current year.

              GAGE.--Water-stage recorder. Altitude of gage is 299 ft above National Geodetic Vertical Datum of 1929, (by
                    barometer).

              REMARKS.--Records good.                              -
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 31,300 ft3/s, Aug. 23, 1967, gage height, 18.82 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 21,000 fts/s and graphically extended
                  on logarithmic plotting paper.
                     FLOOD-FREQUENCY DATA (fts    /a)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     32 YEARS OF RECORD                                      Mean                          -    3.849
                     LOG-PEARSON TYPE    III                                 Standard Deviation            -    0.204
                         QQ2  -  6,750                                       Weighted Skew                 -    0.570
                         5    -  10,300
                         Q10  -  13,100
                         Q    -  17 400
                         Q25  _  21:200
                         50   -  25,400
                         Q100

                                                               Peak Stages and Discharges


              Water     Date     Gage    Discharge       Water       Date      Gage    Discharge       Water      Date      Gage     Discharge
              year             height         3          year                height                    year               height
                                 (ft)      (ft /a)                             (ft)      (ft3/3)                            (ft)      (ft 3 /a)


              1952   Mar.  4     9.77       8,880        1962     Jan.    7    8.86      7,570         1972     Jan.  11      7.36      5,110
              1953   Feb. 21     7.71       5,230        1963     Mar.  13     8.43      6,510         1973     Apr.    1     12.92     16,600
              1954   Jan. 17     8.08       5,860        1964     Mar.  15     9.29      8,490         1974     Oct.    2     6.66      3,500
              1955   Apr. 15     8.27       6,180        1965     Oct.  16     10.95     13,000        1975     Mar.  14      9.21      8,470
              1956   Mar. 17     7.56       5,080        1966     Mar.    5    8.38      6,470         1976     Mar.  17      6.43      3,650

              1957   Apr.  6     7.04       4,290        1967     Aug.  23     18.82     31,300        1977     Jan.  10      7.35      5,100
              1958   Jan. 25     7.93       5,600        1968     July  10     9.53      9,110         1978     Oct.  26      11.62     13t3OO
              1959   Sept.30     10.23     10,800        1969     Apr.  19     9.94      9,930         1979     Feb.  24      7.78      5,790
              1960   Feb. 14     8.70       6,910        1970     Mar.  22     6.67      4,000         1980     Mar.    9     7.63      8,230
              1961   Feb. 25     8.83       7,340        1971     Mar.    4    8.41      6,900         1981     Feb.  12      7.57      5,420

                                                                                                       1987     Mar.    1     8.64      7,320
                                                                                                       1988     Nov.  28      4.86      1,790






































                                                                             65










                                                                           SANTEE RIVER BASIN

                                                            02147600 SCABBER BRANCH NEAR GREAT FALLS, SC


                     LOCATION.--Lat 34*30117", long 81*00'22", Fairfield County, Hydrologic Unit 03050104, on the upstream side of
                          box culvert on State Highway 200, 1.1 mi upstream of Big Wateree Creek and 7.0 mi southwest of Great Falls.
                     DRAINAGE AREA.--4.55 m12.

                     PERIOD OF RECORD.--Kovember 1974 to current year.

                     GAGE.--Dual digital water-stage and rainfall recorders, December 1966 to October 1974. Partial record crest
                          stage, November 1974 to current year.

                     REMARKS.--Records good.
                     EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 2,670 ft3js' October 26, 1978, &age height 10.07 ft.
                     STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 100 fts/s and extended by indirect methods
                          for computing peak discharge at culverts.
                           FLOOD-FREQUENCY DATA (ft3/3)                            LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                           10 YEARS OF RECORD                                      Mean                           -   3.070
                           LOG-PEARSON TYPE    III                                 Standard Deviation             =   0.245
                               Q2    =  1,150                                      Weighted Skew                  =   0.178
                               Q     =  11880
                                     =  2,440
                               Q10      3,260
                               Q 5   =
                               Q50   =  3,940
                               Q100  =  4,690


                                                                      Peak Stages and Discharges


                     Water     Date    Gage     Discharge       Water      Date       Gage    Discharge       Water     Date      Gage      Discharge
                     year             height                    year               height                     year               height
                                       (ft)       (ft 3/s)                            (ft)      (ft3/a)                            (ft)      (ft3 /s)


                     1977    Mar. 31    6.17       1,110        1983     July    5    6.15      1,100         1988
                     1978    Oct. 26    10.07      2,670        1984     Max.    6    5.51        878
                     1979    Apr. 26    5.78         973        im       Aug.  17     8.82      2,168
                     1981    Feb. 11    5.59         906        19a6     Aug.  18     9.95      2,620
                     1982    Apr. 26    4.86         651        1987     Jan.  19     4.48        534














































                                                                                   66










                                                                   SANTEE RIVER BASIN

                                                         02148000  WATEREE RIVER NEAR CAMDEN, SC

             LOCATION.--Lat 34-14'4011, long 80'39'15'', Kershaw County, Hydrologic Unit 03050104, in pier of downstream
                   bridge on U.S. Highway 1, 1,500 ft downstream from Five and Twenty Creek, 4,000 ft upstream from Seaboard
                   Coast Line Railroad bridge, 2.2 mi west of Camden, 7.4 mi downstream from Wateree Dam, and at mile 68.8.
             DRAINAGE AREA. --5,070 m12, approximately.

             PERIOD OF RECORD.--January to December 1903 (gage heights only), October 1904 to September 1910, October 1929 to
                   current year.     Monthly discharge only for some periods, published in WSP 1303. Gage-height records
                   collected at site 1.5 mi downstream 1891-1934, at site 830 ft upstream January 1935 to September 1942, and
                   at present site since October 1942, are contained in reports of National Weather Service.

             REVISED RECORDS.--WSP 802: 1930. WSP 952: Drainage area. WSP 1082: 1934(M). WSP 1433: 1905-10. WSP 1623:
                   1930-51 (monthly and yearly runoff).

             GAGE.--Water-stage recorder and data collection platform. Datum of gage is 119.36 ft above National Geodetic
                   Vertical Datum of 1929. January 1903 to September 1910, nonrecording gage at site 1.5 mi downstream at
                   datum 1.65 ft lower. Oct. 1, 1929 to Sept. 1, 1942, recording gage at site 830 ft upstream at same datum.
             REMARKS.--Records good. Flow regulated by powerplant at Wateree Reservoir (usable capacity, 2,794,000,000 fts)
                   and by other powerplants above station.
             EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 366,000 fts/s, Aug. 26, 1908 gage height, 39.7 ft, site and,
                   datum then in use, from records of National Weather Service, from Sating curve extended above 122,000 ft Is
                   on basis of computation, by Duke Power Co., of peak flow 382,000 ft /a over dam at Rocky Creek Reservoir.

             EXTREMES FOR OUTSIDE PERIOD OF RECORD.--The flood of July 18, 1916 reached a stage of 40.4 ft, datum 117.71 ft
                   above mean sea level, at site 1.5 mi downstream, from reco s of National Weather Service, discharge,
                   400,000 ft3                                                        q
                                 Is, from rating curve extended above 122,000 ft Is, as explained above.
             STAGE-DISCHARGE RELATION. --Defined by current-metex measurements below 102,000 ft3/s at current site and
                   graphically extended on logarithmic plotting paper.

                                                               Peak Stages and Discharges


             Water     Date      Gage    Discharge       Water      Date       Gage   Discharge        Water      Date     Gage     Discharge
             year             height         3           year               height         3           year               height         3
                                 (ft)     (ft /a)                              (ft)     (ft Is)                             (ft)       (ft /a)


             1886    Sept.--     31.50                   1924     July    9    24.50                   1957     Apr.  10     19.63     22,200
             1892    Jan.  20    30.10                   1925     Jan.  20     31.00                   1958     Nov.  26     25.20     36,800
             1893    Aug.  30    29.60                   1926     Apr.    2    19.40                   1959     July  11     17.45     18,300
             1894    Oct.  24    30.50                   1927     July  23     12.70                   1960     Apr.   6     28.54     58,800
             1895    Oct.  10    30.20                   1928     Aug.  18     35.00                   1961     Feb.  26     27.00     46,8DO

             1896    July  11    28.80                   1929     Mar.    1    31.80                   1962     Jan.   8     22.87     30,000
             1897    Feb.   8    29.70                   1930     Oct.    3    36.20    163,000        1963     Mar.  15               20,100
             1898    Sept.25     28.00                   1931     Dec.  23     14.31     11,600        1964     Apr.   9     26.50     43,900
             1899    Feb.   8    31.00                   1932     Jan.    9    28.31     50,700        1965     Oct.  18     29.07     64,500
             1900    Apr.  23    28.40                   1933     Dec.  28     25.37     32,000        1966     Mar.   6     18.99     21,100

             1901    May   24    32.50                   1934     June    9    20.65     20,200        1967     Aug.  25     32.22     88,300
             1902    Dec.  31    31.20                   1935     Mar.  14     24.03     30,000        1968     Jan.  12     20.91     24,900
             1903    Mar.  25    30.40                   1936     Apr.    7    36.63    168,000        1969     Apr.  20     21.41     26,000
             1904    Aug.   9    25.20                   1937     Jan.    4    27.26     52,500        1970     Mar.  23     16.83     17,800
             1905    July  15    29.60     66,800        1938     Apr.    9    14.92     13,300        1971     Mar.   5     23.46     31,300

             1906    Dec.  22    28.60     54,100        1939     Mar.    2    29.01     70,500        1972     Jan.  14     19.70     22,400
             1907    Oct.  21    28.70     55,000        1940     Aug.  16     30.50     89,000        1973     Apr.   2     28.53     56,100
             1908    Aug.  26    39.70    366,000        1941     July    9    28.10     60,600        1974     Apr.   7     16.00     16,700
             1909    June   5    31.70    103,000        1942     Mar.  10     24.85     35,400        1975     Mar.  16     30.55     70o2OO
             1910    Mar.   2    26.90     39,700        1943     Jan.  20     24.76     35,400        1976     Mar.  17     16.44     17,300

             1911    Oct.  10    26.90                   1944     Mar.  21     29.08     71,700        1977     Oct.  11     28.36     55,100
             1912    Mar.  17    35.40                   1945     Sept.19      33.84    132,000        1978     Jan.  27     26.22     42,300
             1913    Mar.  17    34.00                   1946     Jan.    9    24.28     33,800        1979     Feb.  26     29.17     60,200
             1914    Jan.   4    27.60                   1947     Jan.  21     27.87     58,500        1980     Mar.  30     25.80     40,200
             1915    Dec.  27    30.50                   1948     Apr.    2    27.96     59,500        1981     Feb.  13     15.41     16,500

             1916    July  18    40.40    400,000        1949     Nov.  30     31.44    101,000        1982     Jan.   5     25.99     41,200
             1917    Mar.   6    30.30                   1950     Nov.    3    19.21     20,500        1983     Mar.  19     23.16     30,500
             1918    Apr.  21    28.20                   1951     Apr.  11     15.11     15,200        1984     Feb.  16     21.62     26,500
             1919    July  21    33.00                   1952     Mar.    5    31.35     82,900        1985     Feb.   7     15.68     16,800
             1920    Aug.  29    28.60                   1953     Feb.  24     20.82     24,500        1986     Nov.  24     16.13     17,400

             1921    Feb.  11    31.00                   1954     Jan.  24     29.36     67,000        1987     Mar.   2     30.44     69,600
             1922    Feb.  16    30.20                   1955     Apr.  16     22.66     30,800        1988     Jan.  21     12.69     13,700
             1923    Mar.  18    30.00                   1956     Mar.  18     15.93     16,800










                                                                             67










                                                                         SANTEE RIVER BASIN

                                                            02148300 COLONELS CREEK NEAR LEESBURG, SC


                    LOCATION.--Lat 34*00'25", Long 80*43'58", Richand County, Hydrologic Unit 03050104, at bridge on State Highway
                         262, 0.2 mi above Jumping Run Creek, 1.9 mi southwest of Leesburg, and at mile 8.0.
                    DRAINAGE AREA.--38.1 m12.

                    PERIOD OF RECORD.--September 1966 to September 1980.

                    GAGE.--Water-stage recorder. Datum of gage is 157.97 ft above National Geodetic Vertical Datum of 1929.

                    REMARKS.--Records good.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 494 fts/s, June 10, 1973, gage height, 5.28 ft.
                    STAGE-DISCHARGE RELATION. --Defined by curzent-meter measurements below 350 ft3/s and graphically extended on
                         logarithmic plotting paper.
                          FLOOD-FREQUENCY DAT&-Cft3/s)                           LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                          14 YEARS OF   RECORD                                    Mean                           =   2.464
                           LOG-PEARSON  TYPE III                                  Standard Deviation             -   0.248
                              Q2   =    280                                       Weighted Skew                  -   0.395
                              Q5   =    464
                              Q10  =    617
                                   =    850
                              Q25  =                                    -
                              Q       1 060
                               50  =  1:290
                              Q100                                   Peak Stages and Discharges

                    Water    Date     Gage     Discharge       Water     Date      Gage      Discharge       Water     Date      Gage     Discharge
                    year            height          3          year               height         3           year                h7i,11      (ft3/.)
                                      (ft)      (ft /s)                             (ft)      (ft /a)                              ft)

                    1967   Aug. 11     7.78        1---        1972     Jan. 14      4.28        216         1977     Dec. 12      4.56        285
                    1968   Jan, 11     4.07         173        1973     Junb-10      5.28        494         1978     Jan. 26      4.07        174
                    1969   Oct. 20     4.13         273        1974     Jan. 2       4.17        194         1979     Sept. 5      5.27        491
                    1970   Mar. 22     4.13         186        1975     Apr. -3      4.28        216         1980     Nov. 3       4.46        257
                    1971   Mar. 3      5.06         428        1976     July 6       4.30        220

                    1Discharge published in WRI     82-1 of 1350 ft3/s was determined by a       stage-discharge rating exceeding 300 percent
                    and may be unreliable.













































                                                                                  68










                                                                   SANTEE RIVER RASIN

                                                         02153500 BROAD RIVER NEAR GAFFNEY, SC


              LOCATION.--Lat 35'05120", long 81*34,2011, Cherokee County, Hydrologic Unit 03050105, on right bank at
                   downstream side of bridge on U.S. Highway 29, 0.3 mi upstream from Cherokee Creek, .4.4 mi downstream from
                   Gaston Shoals Dam, 4.5 mi east of Gaffney, and at mile 270.3.
              DRAINAGE AREA.--1,490 m12, approximately.

              PERIOD OF RECORD.--July 1896 to December 1899 (&age heights and discharge measurements only), October 1938 to
                   September 1971, October 1971 to May 1986 (Crest-Stage partial record), June 1986 to current year. Monthly
                   discharge only for some periods, published in WSP 1303. Discharge for July 12, 1896 to December 31, 1899,
                   published in the 18th, l9th and 21st Annual Reports, Part 4, have been found to be unreliable and should not
                   be used.

              GAGE.--Water-stage recorder. Datum of gage is 539.10 ft above National Geodetic Vertical Datum of 1929.
                   July 12, 1896 to December 31, 1899, nonrecording gages at sites 1.1 miles upstream at different datum.

              REMARKS.--Peaks prior to Jan. 1, 1900, are from graphs based on gage readings. Some regulation at medium and low
                   flow by powerplants above station.
              EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 119,000 ft3/s, Aug. 14, 1940, gage height, 19.78 ft.
              STAGE-DISCHARGE RELATION.--Defined by    . current-meter measurements below 64,200 fts/s and extended by computation
                   of peak flow over Gaston Shoals Dam.
                    FLOOD-FREQUENCY DATA (ft3    /a)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                    49 YEARS OF RECORD                                      Mean                          -   4.4979
                    LOG-PEARSON TYPE III                                    Standard Deviation            -   0.2183
                                 31,500                                     Station Skew                 = -0.161
                        Q2       45,800
                        Q5
                        Q10      57,700
                        Q        75 900
                        Q 25     92:100
                          50     111,000
                        Q100


                                                              Peak Stages and Discharges


              Water    Date    Gage     Discharge        Water     Date       Gage    Discharge       Water      Date     Gage      Discharge
              year            height                     year               height                    year               height
                                 ft)       (ft3/s)                            (ft)      (ft3 /a)                          (ft)      (ft3  /a)


              1897   Apr. 5        9.25     ---          1956    Apr. 16      10.23     22,400        1976    Oct.  18     11.58      32,100
              1898   Sept.23     12.18      ---          1957    Apr. 6       10.40     23,400        1977    Oct.  10     17.24      84,900
              1899   Mar.  19    12.70      ---          1958    Apr. 28      12.72     37,900        1978    Nov.   7     12.39      38,100
              1939   Aug.  18    10.51     21,000        1959    Sept.30      12.77     38s6OO        1980    July  21     12.33      37,600
              1940   Aug.  14    19.78     119,000       1960    Feb.   6     12.63     37,200        1981    Oct.   1      7.56      10,500

              1941   July  17    11.43     26,000        1961    June  22     11.00     26,600        1982    Jan.   4     11.84      33,900
              1942   Feb.  17    10.70     21,800        1962    Dec.  13     11.31     28,400        1983    Feb.   3      9.98      21,900
              1943   Jan.  28    12.39     38,400        1963    Mar.  13     13.03     41,800        1984    Feb.  14     12.67      39,900
              1944   Mar.  20      9.82    21,700        1964    Apr.   8     11.44     31,100        1985    Aug.  18     10.78      26,600
              1945   Sept.18     15.35     61,600        1965    Oct.   6     15.61     67,100        1986    Aug.  18      7.67      10,900

              1946   Jan.   7    13.38     43,400        1966    Mar.   4     11.65     32,600        1987    Mar.   1     15.49      65,800
              1947   June  15    11.09     27,800        1967    Aug.  24     11.83     33,800        1988    Jan.  20      7.04      8,770
              1948   Aug.   4,   10.80     25,600        1968    Mar.  13     10.65     25,900
              1949   Nov.  29    12.47     35,700        1969    Apr.  19     10.57     25,400
              1950   Oct.   7    11.70     31,000        1970    Aug.  10     13.50     47,500

              1951   Dec.   8    10.47     23,900        1971    Oct.  31       8.55    14,300
              1952   Mar.   4    13.52     44,200        1972    Oct.  16     13.43     46,900
              1953   Feb.  21    10.13     21,900        1973    Mar.  17     12.99     42,900
              1954   Jan.  23    13.24     41,000        1974    Apr.   5     11.91     34,400
              1955   Feb.   7      8.55    14,700        1975    Mar.  15     14.37     55,300






















                                                                            69






                                                                                                                     -- ----                 ---- ---- ---











                                                                         SANTEE RIVER BASIN

                                                        02154500 NORTH PACOLET RIVER AT FINGERVILLE, SC


                    LOCATION.--Lat 35*0711511, long 81*5911011, S@artanburg County, Hydrologic Unit 03050105, on right bank at
                         McMillin Mill, about 400 ft downstream from Obed Creek, 1.4 mi south of Fingerville, and at mile 48.5.
                    DRAINAGE AREA.--116 m12.

                    PERIOD OF RECORD.--October 1929 to current year. Monthly discharge only for some periods, published in
                         WSP 1303.

                    GAGE.--Water-stage recorder. Datum of gage is 715.56 ft above National Geodetic Vertical Datum of 1929. From
                         November 26, 1929 to November 24, 1933, recording gage at site about 400 ft downstream at datum 5.60 ft
                         higher.

                    REMARKS.--Records good. Some diurnal fluctuation at low and medium flow caused by mill above station.
                    EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 12,500 fts/s, August 14, 1940, gage height, 27.13 ft.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 4,300 fts/s and extended on basis of peak
                         flow over dam 2.0 mi above station.
                          FLOOD-FREQUENCY DATA (fts     /a)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                          58 YEARS OF RECORD                                      Mean                          - .3.474
                          LOG-PEARSON TYPE    III                                  Standard Deviation            =    0.264
                              Q     =  3,010                                      Weighted Skew                 - -0.119
                                2   =  4 980
                              Q5         I
                              Q10   =  61430
                              Q25   -  81400
                              Q50   =  9 960
                              Q100  =  11:600

                                                                     Peak Stages and Discharges


                    Water     Date    Gage     Discharge       Water      Date      Gage     Discharge        Water     Date     Gage      Discharge
                    year             height                    year               height                      year              height
                                      (ft)       (ft3 /s)                           (ft)       (ft3 /a)                            ft)       (ft3 /a)


                    1931    Dec.    7                 872      1951     Dec.   8      9.91       2,320        1971    Oct.  31      8.92       2,020
                    1932    Dec.    15             2,120       1952     Mar.   4     12.69       3,880        1972    June  21     14.85       4,350
                    1933    Oct.    17             6,820       1953     Feb.  21     10.01       2,360        1973    May   24     14.77       4,320
                    1934    Mar.    4  12.00       2,100       1954     Jan.  23     15.96       5,040        1974    Apr.    5     9.71       2,330
                    1935    July    19             1,760       1955     Feb.   7      8.28       1,840        1975    Mar.  14     14.77       4,320

                    1936    Apr.    7  19.77       6,120       1956     Apr.  16      7.88       1,690        1976    Oct.  17     10.45       2,630
                    1937    Oct.    17 21.23       7,290       1957     Apr.   6     10.28       2,620        1977    Oct.    9    18.79       6,370
                    1938    Oct.    19 17.48       5,400       1958     Apr.  29     12.25       3,480        1978    Jan.  26      9.32       2,180
                    1939    Aug.    19 10.65       2,480       1959     May   26     18.64       6,680        1979    Sept.30      12.73       3,540
                    1940    Aug.    14 27.13       12,500      1960     Mar.  31     12.54       3,200        1980    Nov.    3     8.14       1,700

                    1941    July    17   8.51      1,540       1961     June  22     14.80       4,330        1981    Oct.    1     5.27          608
                    1942    Feb.    17 11.35       2,700       1962     Dec.  13     13.08       3,480        1982    June  18     11.44       3,030
                    1943    Jan.    28 10.16       2,200       1963     Mar.  13     14.45       4,010        1983    Apr.  10      7.67       1,540
                    1944    Mar.    29   9.70      1,620       1964     Aug.  10      9.41       2,440        1984    Feb.  14     13.12       3,700
                    1945    Sept.17    13.90       3,780       1965     Oct.   5     25.60      11,200        1985    Aug.  18     10.46       2,640

                    1946    Jan.    7  17.12       5,040       1966     Feb.  14     12.75       3,550        1986    Aug.  18     11.33       2,980
                    1947    June 15    12.30       3,110       1967     Aug.  24     15.19       4,480        1987    Mar.    1    18.76       6,350
                    1948    Feb.    13   7.30      1,370       1968     Feb.  13      9.79       2,370        1988    Jan.  20      5.65          731
                    1949    Nov.    29 13.74       3,780       1969     Sept. 4      10.60       2,690
                    1950    Oct.    7  16.70       5,150       1970     Nov. 2        6.56       1,070


























                                                                                    70










                                                                    SANTEE RIVER BASIN

                                                      02155500 PACOLET RIVER NEAR FINGERVILLE, SC


              LOCATION.--Lat 35*06135". long 81*57'35", Spartanburg County, Hydrologic Unit 03050105, on right bank, 100 ft
                   upstream from bridge on State Road 55, 0.2 mi downstream from confluence of North Pacolet and South Pacolet
                   Rivers, 2.8 mi southeast of Fingerville. and at mile 46.5.
              DRAINAGE AREA.--212 m12.

              PERIOD OF RECCRD.--October 1929 to current year. Monthly discharge only for some periods, published in WSP 1303.

              REVISED RECORDS.--WSP 1303: 1930-39 (monthly and yearly runoff).

              GAGE.--Water-stage recorder. Datum of gage is 706.33 ft above National Geodetic Vertical Datum of 1929.

              REMARKS.--Records good. Some regulation by South Pacolet River Reservoir and Lake William C. Bowen (02154950).
                   Some diurnal fluctuation caused by mill on North Pacolet River. Some water diverted from South Pacolet
                   River above station for City of Spartanburg water supply.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 22,800 ft3/s August 14, 1940, gage height, 22.43 ft.

              EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of June 1903 reached a stage of 46 ft, from floodmark (discharge not
                  determined).
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 9,600 fts/s and extended by velocity-area
                   studies.

                                                               Peak Stages and Discharges


              Water     Date    Gage     Discharge       Water      Date      Gage     Discharge       Water      Date     Gage       Discharge
              year             h7'ght     (ft3/5)        year               height         3           year               height         3
                                 ft)                                          (ft)      (ft /a)                             (ft)      (ft /a)


              1903   June   0    46.00                   1950     Oct.   7      9.05     6,250         1970     Nov.   2      3.50      1,640
              1931   Dec.   6     2.68     1.020         1951     Dec.   8      6.85     4,120         1971     Feb.  22      6.23      3,820
              1932   Dec.   15    6.45     3,810         1952     Mar.  24      9.46     6,760         1972     June  21      10.15     7,650
              1933   Oct.   17   13.31    11,000         1953     Feb.  21      6.27     3,710         1973     Feb.   3      8.58      6,080
              1934   Mar.   4     6.39     3,810         1954     Jan.  23      10.38    7,750         1974     Apr.   5      7.16      4,660

              1935   Oct.   11    4.76     2,510         1955     Feb.   7      5.10     2,810         1975     Mar.  14      9.88      7,380
              1936   Apr.   7    12.53    10,100         1956     Apr.  17      5.55     3,160         1976     Oct.  17      9.69      7,190
              1937   Oct.   17   13.63    11,300         1957     Apr.   6      7.33     4,570         1977     Oct.   9      14.89     12,900
              1938   Oct.   19   12.73    10,300         1958     Apr.  29      8.20     5.450         1978     Jan.  26      7.58      5,080
              1939   Aug.   19    7.09     4,390         1959     May   26      13.82   11,500         1979     Feb.  26      7.81      5,260

              1940   Aug.   14   22.43    22,800         1960     Mar.  30      8.78     5,050         1980     May   24                6,500
              1941   July   17    3.63     1,760         1961     June  22      8.65     5,850         1981     Oct.   1      3.43      1,580
              1942   Feb.   17    9.54     6,760         1962     Apr.  11      6.31     3,710         1982     Feb.   4      7.45      4,920
              1943   Jan.   28    6.84     4,120         1963     Mar.  13      10.46    7,860         1983     Apr.  10      5.44      3,140
              1944   Mar.   20    6.50     3,870         1964     Aug.  10      7.05     4,560         1984     Feb.  14      6.51      4.060

              1945   Sept.17      8.56     5,850         1965     Oct.   5      17.65   16,300         1985     Aug.  18      7.31      4,790
              1945   Jan. 7      11.90     9,400         1956     Mar.   4      7.21     4,610         1986     Aug.  18      5.43      3,130
              1947   June 15      7.99     5,250         1967     Aug.  24               6,500         1987     Mar.   1      11.71     9,250
              1948   Aug.   5     5.62     3,160         1968     Mar.  13      5.83     3,470         1988     Feb.   9      3.94      1,960
              1949   Nov.   29    9.66     6,980         1969     Apr.  19      7.71     5,210
































                                                                            71











                                                                            SANTEE RIVER BASIN

                                                                 02156000 PACOLET RIVER NEAR CLIFTON, SC


                      LOCATION.--Lat 34*5811011, long 81*48105", Spartanburg County, Hydrologic Unit 03050105, on left bank, 1.0 mi
                            (revised) downstream from dam at Clifton Mill, 1.3 miles southeast of Clifton, 2.7 miles upstream from
                            Lawsons Fork Creek, 2.7 miles northeast of Glendale, and at mile 28.2.
                      DRAINAGE AREA.--320 m12.

                      PERIOD OF RECORD.--October 1939 to September 1978,

                      GAGE.--Water-stage recorder October 1939 to September 1971. Partial record crest gage, October 1971 to September
                            1978.

                      REKARKS.--Records good.
                      EXTREMES FOR PERIOD OF RECORD. --Maxitm,m discharge, 27,700 fts/s, October 9, 1977, gage height, 21.70 ft.
                      STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 12,100 fts/s and extended on the basis of
                            peak flow over dam computations.

                                                                        Peak Stages and Discharges


                      Water     Date    Gage     Discharge        Water      Date       Gage    Discharge       Water       Date     Gage       Discharge
                      year             height                     year               height                     year                height
                                        (ft)       (ft3 /a)                             (ft)     (ft 3 /a)                            (ft)      (ft3  /a)


                      1940    Aug.  14   21.19      26,800        1955     Feb.   6      5.35      4,020        1970      July  27       6.16     4,560
                      1941    July  11    7.74       5,620        1956     Apr.  16      9.63      9,170        1971      Feb.  22       7.17     5,590
                      1942    Aug.  18    9.76       8,640        1957     Aug.  14      7.51      6,480        1972      June  21     13.39     14tOOO
                      1943    Jan.  28   11.10       9,300        1958     Nov.  19     12.06     12,600        1973      Feb.    3    11.24     10,800
                      1944    Mar.  20    8.08       7,220        1959     May   26     12.11     12,600        1974      Apr.    5      8.75     7,400

                      1945    Aug.  17   14.16      12,000        1960     Feb.   5     10.16      9,840        1975      Mar.  15     12.39     12,500
                      1946    Jan.   7   12.69      12,900        1961     Feb.  21      9.98      9,050        1976      Oct.  18     11.79     11,600
                      1947    Jan.  20    6.95       5,860        1962     Apr.  11      9.82      8,770        1977      Oct.    9    21.70     27,700
                      1948    Aug.   4    6.05       4,690        1963     Mar.   6     14.80     16,100        1978      Jan.  26     11.27     10,800
                      1949    Nov.  28    9.62       9,170        1964     Aug.  10     14.97     16,400

                      1950    Oct.   7   14.64      16,300        1965     Oct.   5     17.31     20,100
                      1951    Dec.   7    7.11       6,100        1966     Mar.   4     10.85     10,200
                      1952    Mar.  24   11.16      11,400        1967     July   7      9.95      8,940
                      1953    Feb.  21    6.12       4,800        1968     July  12      9.24      8,010
                      1954    Jan.  22    9.14       8,520        1969     Apr.  18      9.43      8,260












































                                                                                       72










                                                                   SANTEE RIVER BASIN

                                                         02156500 BROAD RIVER NEAR CARLISLE, SC


             LOCATION.--Lat 34*35'46", long 81*25120", Union County, Hydrologic Unit 03050106, on right bank at downstream
                   side of bridge on State Highway 72, 1.3 mi upstream from Sandy River, 2.0 mi downstream from Seaboard Coast
                   Line Railroad bridge, 2.5 mi east of Carlisle, 5.0 mi downstream from Neals Shoals Damp and at mile 226.0.
             DRAINAGE AREA.--2,790 m12' approximately.

             PERIOD OF RECORD.--October 1938 to current year. Monthly discharge only for some periods, published in WSP
                   1303.

             REVISED RECORDS.--WSP 892: 1939(M), drainage area.

             GAGE.--Water-stage recorder. Datum of gage is 290.79 ft above National Geodetic Vertical Datum of 1929.

             REMARKS.--Records good. Some regulation at low and medium flow by powerplants above station. Capacity of
                   reservoirs insufficient to affect monthly figures of runoff.
             EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 123,000 fts/s, Oct. 10, 1976, gage height, 31.51 ft.
             STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 65,800 fts/s and extended on basis of
                   computation of peak flow over Neal Shoals Dam.
                    FLOOD-FREQUENCY DATA (ft3/s)                            LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                    50 YEARS OF RECORD                                      Mean                           .    4.632
                    LOG-PEARSON TYPE III                                    15tandard Deviation            -    0.184
                       Q     =   41,200                                     Weighted Skew                  -    0.050
                       Q     =   64,000
                             =   84,000
                       Q  10 =  115 000
                       Q  25 =  144:000
                          50
                          100=  178,000


                                                               Peak Stages and Discharges


             Water     Date     Gage     Discharge       Water      Date       Gage   Discharge        Water      Date     Gage      Discharge
             year             height         3           year               height                     year               height
                                (ft)       (ft Is)                             (ft)     (ft3  /s)                           (ft)      (ft3 /s)


             1939    Mar.    1   16.27     34,900        1959     Dec.  30     14.21     28,700        1979     Feb.  26     20.00      47,800
             1940    Aug.  15    29.41     103,000       1960     Feb.   7     18.71     42,100        1980     Mar.  29     17.28      37,600
             1941    July  18    17.06     37,600        1961     Feb.  22     15.82     33,200        1981     Oct.    2    10.09      15,600
             1942    Feb.  18    18.42     42,200        1962     Apr.  12     17.25     37,400        1982     Jan.    5    17.89      39,700
             1943    Jan.  29    18.96     44,500        1963     Mar.  14     21.78     57,200        1983     Mar.  18     14.21      27,600

             1944    Mar.  20    19.58     46,900        1964     Apr.   8     23.90     69,500        1984     Feb.  15     18.40      41,500
             1945    Sept.19     25.72     78,500        1965     Oct.  18     25.82     79,900        1985     Aug.  19     16.72      35,100
             1946    Jan.    8   20.11     49,200        1966     Mar.   5     18.89     45,600        1986     Aug.  20     17.33      37,300
             1947    Jan.  21    17.21     37,900        1967     Aug.  24     20.23     51,200        1987     Mar.    2    25.77      72,100
             1948    Feb.  14    16.20     34,600        1968     Mar.  14     14.57     29,700        1988     Jan.  21       9.15     13,400

             1949    Nov.  29    22.81     62,200        1969     Aug.  15     29.41    103,000
             1950    Oct.    8   19.32     44,200        1970     Aug.  12     17.48     39,900
             1951    Dec.    9   13.65     27,000        1971     Mar.   3     15.05     31,200
             1952    Mar.    5   22.43     57,700        1972     Oct.  17     19.31     47,200
             1953    Feb.  22    15.77     33,200        1973     Feb.   3     21.54     57,700

             1954    Jan.  24    20.63     49,200        1974     Apr.   6     17.61     40,400
             1955    Apr.  15    13.79     27,500        1975     Mar.  15     23.75     63,100
             1956    Apr.  17    14.99     30,900        1976     Oct.  19     14.95     31,000
             1957    Apr.    7   13.24     25,900        1977     Oct.  10     31.51    123,000
             1958    Apr.  29    20.12     48,000        1978     Jan.  27     19.72     46,900

             iStandard deviation was adjusted       according to  Appendix 7   of Water Resources Council Bulletin 17-B to adjust the
             record at Broad River near Carlisle, S.C. (station no. 02156500) to the longer period of record at Broad River
             at Richtex, S.C. (station no. 02161500).




















                                                                            73










                                                                         SANTEE RIVER BASIN

                                                               02157000 NORTH TYGER RIVER NEAR FAIRMONT, SC


                    LOCATION.--Lat 34*55'45'', long 82*02'40", Spartanburg County, Hydrologic Unit 03050107, on left bank 80 ft
                          downstream from Frey Creek, 2.2 mi north of Fairmont, and at mile 57.9.
                    DRAINAGE AREA.--44.4 mi2.

                    PERIOD OF RECORD.--October 1950 to September 1988.

                    GAGE.--Water-stage recorders and concrete control. Datum of &age is 680 ft above National Geodetic Vertical
                          Datum of 1929.

                    REMARKS.--Records good.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 3,610 ft3/s, May 26, 1959, gage height, 13.58 ft.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 2,100 ft3/s and graphically extended on
                          logarithmic plotting paper.
                           FLOOD-FREQUENCY DATA (ft3    ts)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                           38 YEARS OF     RECORD                                 Mean                          .    3.118
                           LOG-PEARSON     TYPE III                               Standard Deviation            -    0.254
                              Q2    =      1,350                                  Weighted Skew                - -0.274
                              Q     -      21160
                              Q5    =      2 720
                                10  =      31450
                              Q25   =      3:990
                              Q50
                              Q100  =      4,540


                                                                     Peak Stages and Discharges


                    Water     Date     Gage    Discharge       Water      Date     Gage     Discharge       Water      Date     Gage      Discharge
                    year             height                    year               height          3         year               height          3
                                        (ft)      (ft3/s)                           (ft)      (ft /a)                            (ft)      (ft /6)


                    1951    Dec.   7       8.38    1,510       1966     Mar.   4      9.72      1,930       1981     June   3      3.17        493
                    1952    Dec.  21     10.55     2,280       1967     Aug.  24      4.44        746       1982     Jan.   4      8.30       1,580
                    1953    Feb.  21       4.91       722      1968     June  10      6.92      1,240       1983     Mar.  27      3.51        562
                    1954    Jan.  22       7.15    1,170       1969     Apr.  19      9.99      2,000       1984     Feb.  14      6.80       1,220
                    1955    May   22       8.68    1,650       1970     Feb.  16      3.05        470       1985     Aug.  17      3.57        574

                    1956    Apr.  15       9.10    1,790       1971     Feb.  23      4.86        832       1986     Nov.   1      4.43        746
                    1957    Apr.   5       3.06       466      1972     June  21      9.89      1,970       1987     Mar.   1      9.09       1,770
                    1958    Nov.  19       8.18    1,480       1973     Sept.14      10.35      2,100       1988     Jan.  20      2.69        397
                    1959    May   26     13.58     3,610       1974     Jan.   1      4.51        762
                    1960    Sept. 7        9.13    1,790       1975     Mar.  13     10.10      2,030

                    1961    Feb. 21        9.26    1,820       1976     Oct.  18      9.13      1,780
                    1962    Dec.  12       8.08    1,410       1977     Oct.   9     11.30      2,420
                    1963    Mar.   6     12.48     3,090       1978     Nov.   6     12.70      3,050
                    1964    Apr.   8       8.57    1,640       1979     Feb.  26      6.21      1,100
                    1965    Oct.   5     11.64     2,560       1980     May   24      6.53      1,170

































                                                                                  74









                                                                   SANTEE RIVER BASIN

                                                         02157500 MIDDLE TYGER RIVER AT LYMAN, SC


              LOCATION.--Lat 34*5613511, long 82*08'00", Spartanburg County, Hydrologic Unit 03050107, on left bank 200 ft
                    upstream from bridge on State Highway 292 at Lyman, 600 ft downstream from Southern Railway bridge, and 0.8
                    mi northeast of Duncan.
              DRAINAGE AREA.--68.3 m12, approximately.

              PERIOD OF RECORD.--October 1937 to December 1967 and October 1970 to current year.

              GAGE.--Digital water-stage recorder prior to December 1967, crest-stage gage thereafter. Datum of gage is 776.05
                    above National Geodetic Vertical Datum of 1929. Prior to February 16, 1965, graphic water-stage recorder at
                    same site and datum.

              REMARKS.--Records good. Flow regulated by reservoir 5.7 mi above station.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 4,800 ft3/s, August 14, 1940, gage height, 16.16 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 2,850 fts/9 and extended on basis of
                    computation of peak flow over dam.
                    FLOOD-FREQUENCY DATA (ft3     /a)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     42 YEARS OF  RECORD                                    Mean                          -    3.398
                     LOG-PEARSON  TYPE III                                  Standard Deviation            -    0.129
                        Q2    -   2,520                                     Weighted Skew                - -0.158
                        Q 5   =   31220
                        Q         3,640
                        Q"        4 140
                          25
                        Q         4,490
                          50      4,830
                        Q100


                                                              Peak Stages and Discharges


              Water     Date    Gage     Discharge       Water      Date     Gage     Discharge        Water    Date      Gage      Discharge
              year             height        3           year               height        3            year              height         3
                                (ft)      (ft /a)                            (ft)      (ft /a)                            (ft)      (ft /a)


              1939    Aug. 18     9.28     2,730         1954     Jan. 23      8.74      2,520         1972     June  21    10.64       3,140
              1940    Aug. 14    16.16     4,800         1955     Feb.  7      5.96      1,440         1973     May   28    11.21       3,310
              1941    July 18     4.89        945        1956     Apr. 16      7.67      2,160         1974     Jan.    1    7.56       1,970
              1942    Feb. 17     9.71     2,860         1957     Apr.  6      6.58      1,710         1975     Mar.  15    10.15       3,000
              1943    Jan. 28     8.34     2,380         1958     Apr. 29      7.20      1,960         1976     Oct.  18     7.30       1,870

              1944    Mar. 20     7.64     2,120         1959     May  26     10.36      3,070         1977     Oct.    9   11.80       3,490
              1945    July 16     8.08     2,310         1960     Mar. 31      7.89      2,240         1978     Nov.    6   13.48       3,990
              1946    Jan.  7    12.39     3,670         1961     Aug. 25      7.82      2,240         1979
              1947    Jan. 21     6.91     1,840         1962     Dec. 12     11.21      3,310         1980     May 20       8.27       2,260
              1948    Aug.  5    11.16     3,310         1963     Mar.  6     12.56      3,730         1981

              1949    Nov. 29    10.76     3,190         1964     Apr.  8      8.37      2,300         1982     Feb. 3       9.54       2,770
              1950    Oct.  7     6.29     1,580         1965     Oct.  5     12.12      3,590         1983
              1951    Dec.  8     6.53     1.660         1966     Mar.  5      9.53      2,760         1984     Feb. 14      9.36       2,690
              1952    Mar. 23    10.42     3,070         1967     Aug. 24      7.88      2,110         1985     Aug. 17     10.54       3,110
              1953    Feb. 21     6.92     1,840         1971     May  13      5.51      1,150         1986

                                                                                                       1987     Mar. 1      11.45       3,380
                                                                                                       1988

































                                                                            75









                                                                         SANTEE RIVER BASIN

                                                               02158000 NORTH TYGERRIVER NEAR MOORE, SC


                    LOCATION.--Lat 34*48'10", long 61*57'57", Spartanburg County, Hydrologic Unit 03050107, on right bank at Ott
                         Shoals, 2.0 upstream from Wards Creek, 2.6 mi southeast of Moore, and 5.3 mi upstream from confluence with
                         South Tyger River.
                    DRAINAGE AREA.--162 mi2.

                    PERIOD OF RECORD.--October 1933 to September 1978. Monthly discharge only for some periods, published in WSP
                         1303.

                    GAGE.--Digital water-stage recorder prior to January 4, 1968, creat-stage gage October 1970 to September 1978.
                         Datum of gage is 564.79 ft above National Geodetic Vertical Datum of 1929. Prior to February 17, 1965,
                         graphic water-stage recorder at same site and datum.

                    REMARKS.--Records good. Some regulation at low flow by powerplants above station.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 12,300 ft3/s, August 14, 1940, gage height, 7.15 ft.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 7,740 ft3/s and extended by velocity-area
                         studies.
                          FLOOD-FREQUENCY DATA (ft3/s)
                          41 YEARS OF   RECORD                                     Mean                          -    3.571
                           LOG-PEARSOK  TYPE III                                   Standard Deviation            -    0.243
                                Q2  =   3,740                                      Weighted Skew                 = -0.042
                                Q5  =   51960
                                Q10 =   71600
                                Q25 =   91830
                                Q   =  11 600
                                50  =  13:400
                                Q100


                                                                     Peak Stages and Discharges


                    Water     Date     Gage    Discharge       Water      Date       Gage    Discharge       Water      Date     Gage       Discharge
                    year             height                    year                height                    year                height
                                       (ft)       (ft3 /s)                           (ft)     (ft3 /s)                            (ft)       (ft3 /a)


                    1935    Aug.   25  3.43       2,010        1950     Oct.   7     6.01      8,120         1965     Oct.   5     5.31        5,930
                    1936    Apr.   7   6.15       8,640        1951     Dec.   8     3.28      1,950         1966     Mar.   5     4.17        3,450
                    1937    Oct.   16  5.68       7,160        1952     Mar.  24     4.89      5,030         1967     Aug.  25     3.47        1,880
                    1938    Oct.   20  5.54       6,680        1953     Feb.  22     3.43      2,160         1971     Oct.  30     3.23        1,580
                    1939    Aug.   19  3.52       2,240        1954     Jan.  23     4.19      3,510         1972     June  21     4.96        4,900

                    1940    Aug.   14  7.15       12,300       1955     May   23     3.34      2,020         1973     Sept.15      4.94        4,850
                    1941    July   17  2.53       1,080        1956     Apr.  16     3.81      2,750         1974     Jan.   1     3.50        1,950
                    1942    Feb.   18  4.23       3,610        1957     Apr.   7     2.92      1,460         1975     Mar. 15      5.08        5,240
                    1943    Jan.   29  4.48       4,130        1958     Nov.  19     3.80      2,750         1976     Oct.  18     3.95        2,700
                    1944    Mar.   21  3.89       2,930        1959     May   26     5.30      6,020         1977     Oct.   9     6.14        8,600

                    1945    Sept   18  4.00       3,120        1960     Feb.   6     3.93      3,020         1978     Nov.   6     5.34        6,020
                    1946    Jan.   8   5.21       5,760        1961     Feb.  21     4.78      4,800
                    1947    Jan.   21  3.46       2,160        1962     Dec.  13     4.47      4,020
                    1948    Aug.   6   4.27       3,610        1963     Mar.   6     5.54      6,720
                    1949    Nov.   29  4.78       4,800        1964     Apr.   8     4.98      5,220































                                                                                   76











                                                                        SANTEE RIVER BASIN

                                                         02158500 SOUTH TYGER RIVER NEAR REIDVILLE, SC


              LOCATION.--Lat 34*52'35", long 82*05'10", Spartanburg County, Hydrologic unit 03050107, on left bank 0.4 mi
                    upstream from bridge on State Highway 296, 1.2 mi downstream from Berry Shoals, 1.8 mi northeast of
                    Reidville, and 4 mi upstream from Bens Creek.
              DRAINAGE AREA.--106 mi2.

              PERIOD OF RECORD.--April 1934 to September 1978.

              GAGE.--Digital water-stage recorder prior to December 5, 1968, crest-stage gage October 1970 to September 1978.
                    Datum of gage is 626.28 ft above National Geodetic Vertical Datum of 1929. Prior to August 4, 1964, graphic
                    water-stage recorder at same site and datum.

              REMARKS.--Records good. Some regulation at low and medium flow by powerplants above station.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 6,420 ft3/s, October 7, 1949, gage height, 14.23 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 5,430 ft3/s and graphically extended on
                    logarthmic plotting paper.
                     FLOOD-FREQUENCY DATA (ft3    /s)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     41 YEARS OF  RECORD                                     Mean                          .    3.390
                      LOG-PEARSON TYPE III                                   Standard Deviation            -    0.218
                        Q2    =   2,450                                      Weighted Skew                 -    0.050
                        Q 5   =   31750
                        Q10       4,690
                        Q25       5,980
                        Q50       6,990
                        Q100      8,060


                                                               Peak Stages and Discharges


              Water     Date    Gage     Discharge       Water       Date     Gage     Discharge       Water     Date       Gage     Discharge
              year             height                    year                height                    year                height
                                 ft)        (ft3/s)                           (ft)      (ft  3/a)                           (ft)      (ft 3/a)


              1935    Aug.  24   11.05       4,150       1950     Oct.   7      14.23      6,420       1965     Oct. 5       9.29     3,520
              1936    Apr.    6  13.66       6,080       1951     Dec.   7      4.88       1,320       1966     Sept.14      7.42     2,510
              1937    Oct.  16    9.68       3,880       1952     Mar.  24      9.76       3,930       1967     Aug. 25      5.70     1,650
              1938    Oct.  19   10.77       4,330       1953     Feb.  22      5.44       1,570       1971     Oct. 30      4.72     1,200
              1939    Aug.  19    5.90       1,820       1954     Jan.  22      7.73       2,780       1972     Oct. 16      5.13     1,390

              1940    Aug.  13   12.68       5,510       1955     May   23      6.59       2,190       1973     Sept.14      5.80     1,700
              1941    July  19    4.17          982      1956     Apr.  16      6.82       zono        1974     Jan.    1    5.55     1,580
              1942    Feb.  18    7.41       2,610       1957     Apr.   6      4.28       1,020       1975     Mar. 15      9.48     3,640
              1943    Jan.  28    7.86       2,880       1958     Nov.  19      6.35       2,080       1976     Oct.   18    8.62     3,140
              1944    Mar.  20    5.82       1,770       1959     May   26      4.94       1,320       1977     Oct.    9    11.32    4,740

              1945    Sept.18     5.19       1,450       1960     Mar.  31      6.08       1,870       1978     Nov.    6    7.88     2,740
              1946    Jan. 7      9.52       3,760       1961     Feb.  21      7.97       2,840
              1947    Jan. 21     5.29       1,520       1962     Dec.  13      8.16       2,950
              1948    Aug.    5   5.06       1,420       1963     Mar.   6      11.00      4,490
              1949    Nov.  28    9.51       3,760       1964     Apr.   7      8.33       2,980































                                                                             77











                                                                               SANTEE RIVER BASIN

                                                                02159000 SOUTH TYGER RIVER NEAR WOODRUFF, SC


                    LOCATION.--Lat 34*45'21", long 81*56'19", Spartanburg County, Hydrologic unit 03050107, on left bank at Chesnee
                          Shoals, 0.5 mi upstream from confluence with North Tyger River and 5.8 mi east of Woodruff.
                    DRAINAGE AREA.--174 mi2.

                    PERIOD OF RECORD.--October 1933 to September 1978. Monthly discharge only for som periods, published in WSP
                          1303.

                    GAGE.--Water-stage recorder prior to September 1971, crest-stage gage thereafter. Datum of gage is 508.35 ft
                          above National Geodetic Vertical Datum of 1929.

                    REMARKS.--Records good. Some regulation at low and medium flow by powerplants above station.
                    EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 9,510 ft         3/s, April 6, 1936, gage height, 9.78 ft.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 7,670 ft3/s and extended by velocity-area
                          studies.
                          FLOOD-FREQUENCY DATA (ft3     /s)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS1
                           44 YEARS OF   RECORD                                    Mean                          -    3.463
                            LOG-PEARSON  TYPE III                                  Standard Deviation            -    0.254
                                Q2  =    2,880                                     Weighted Skew                  -   0.072
                                Q   =    41740
                                Q5  =    6 180
                                10        1
                                Q25 =    8,210
                                Q50 =    91890
                                Q100=  11,700


                                                                     Peak Stages and Discharges


                    Water     Date     Gage    Discharge        Water      Date     Gage     Discharge       Water      Date      Gage     Discharge
                    year             height                     year               height          3         year                 height        3
                                       (ft)       (ft3 /s)                          (ft)      (ft /a)                             (ft)      (ft /s)


                    1935    Aug.   25  4.89       2,260         1950     Oct.   7    9.25        8,490       1965     Oct.  16     6.32      4,280
                    1936    Apr.   6   9.78       9,510         1951     Dec.   8    3.91        1,040       1966     Mar.    5    5.61      3,220
                    1937    Oct.   16  8.83       8,080         1952     Mar.  24    6.72        4,740       1967     Aug.  25               1,800
                    1938    Oct.   20  5.85       3,660         1953     Feb.  23    4.62        1,800       1968     June    9    4.98      2,310
                    1939    Feb.   28  4.82       1,960         1954     Jan.  23    5.40        2,930       1969     Apr.  16     5.13      2,520

                    1940    Aug.   14  8.18       6,960         1955     May   24    4.52        1,670       1970     Apr.    1    3.72          906
                    1941    Nov.   13  3.92       1,050         1956     Mar.  16    4.97        2,280       1971     Mar.    3    4.98      2,310
                    1942    June   10  5.33       2,910         1957     Apr.   7    3.80          950       1972     Oct.  17     5.12      2,510
                    1943    Jan.   28  5.90       3,540         1958     Nov.  19    5.20        2,640       1973     Sept.15      4.62      1,850
                    1944    Mar.   20  5.30       2,640         1959     May   25    5.10        2,500       1974     Jan.    1    4.52      1,720

                    1945    Sept.18    5.61       3,020         1960     Feb.   6    5.19        2,640       1975     Mar. 15      6.86      5,090
                    1946    Jan. 8     6.31       4,140         1961     Feb.  21    6.31        4,250       1976     Mar.  17     5.70      3,350
                    1947    Jan. 20    4.79       2,220         1962     Dec.  13    5.70        3,360       1977     Oct.    9    8.62      7,730
                    1948    Mar.   7   4.27-      1,360         1963     Mar.   6    7.92        6,650       1978     Nov.    6    5.90      3.650
                    1949    Nov.   29  5.45       2,860         1964     Apr.   8    7.37        5,860


































                                                                                   78










                                                                     SANTEE RIVER BASIN

                                                          02159500 TYGER RIVER NEAR WOODRUFF, SC


               LOCATION.--Lat 34*45115", long 81*55'30", Spartanburg County, Hydrologic Unit 03050107, on left bank at
                    upstream side of Nesbitts bridge on State Highway 49, 0.5 mi downstream from confluence of North Tyger and
                    South Tyger Rivers and 6.5 mi east of Woodruff.
               DRAINAGE AREA.--351 mi2.

               PERIOD OF RECORD.--October 1929 to September 1956.

               GAGE.--Water-stage recorder. Datum of gage is 489.44 ft above National Geodetic Vertical Datum of 1929.

               REMARKS.--Records good. Some regulation at low and medium flow by powerplants above station.
               EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 28,000 ft3/s,'(estimated) October 2, 1929, gage height,
                    19.1 ft.

               EXTREMES OUTSIDE PERIOD OF RECORD.7-Flood on June 6, 1903, reached a stage of 20.4 ft, from floodmark set by
                    local resident, at site 0.3 mi below gage; that in AuSust 1928, 20.0 ft (present site); that in September
                    1929, 14.65 ft, from floodmarks (discharge, 19,600 ft Is).
               STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 14,000 fts/s and graphically extended on
                    logarithmic plotting paper.
                     FLOOD-FREQUENCY DATA (ft3     Is)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     28 YEARS OF RECORD                                       Mean                          =    3.826
                     LOG-PEARSON TYPE III                                     Standard Deviation            -    0.298
                         Q    =    6 500                                      Weighted Skew                 =    0.267
                         Q 2  =   11:800
                           5  =   16,400
                         Q10
                         Q25  =   23,700
                         Q50  =   30,200
                         Q100 w   37,800


                                                                Peak Stages and Discharges


               Water     Date    Gage     Discharge       Water      Date     Gage      Discharge       Water      Date     Gage      Discharge
               year             height         3          year                height        3           year               height         3
                                 (ft)      (ft Is)                             (ft)      (ft Is)                             (ft)      (ft /a)


               1903   June 6      20.40                   1937     Oct.   16     11.48     14,700       1947     Jan.  21      5.49      4,290
               1928   Aug. --     20.00                   1938     Oct.   20     9.30      10,600       1948     Aug.    6     5.98      4,800
               1929   Sept.--     14.65      19,600       1939     Aug.   18     5.46      3,830        1949     Nov.  29      8.88      8,740
               1930   Oct.   2    19.10      28,000       1940     Aug.   14     13.27     19,200       1950     Oct.    7     12.72     17,200
               1931   May 22       5.05      2t430        1941     Nov.   13     4.50      2,220        1951     Dec.    8     5.17      3,000

               1932   Jan.   8     6.01      4,350        1942     Feb.   18     6.11      5,450        1952     Mar.  24      8.97      10,000
               1933   Oct.  17     7.60      7,840        1943     Jan.   26     7.59      7,780        1953     Feb.  22      5.40      3,710
               1934   Mar.   5     5.57      3,540        1944     Mar.   20     6.40      5,270        1954     Jan.  23      6.56      5,990
               1935   Aug.  25     5.99      4,350        1945     Sept.18       7.39      6,580        1955     May   23      5.16      3,230
               1936   Apr.   5    13.16      17,100       1946     Jan. 8        8.48      9,680        1956     Apr.  17      5.99      4,800


































                                                                              79











                                                                              BROAD RIVER BASIN

                                                                 02159600 DUTCHMAN CREEK NEAR PAULINE, S.C.


                    LOCATION.--Lat 34*47'55", long 81'52'46", Spartanburg County, Hydrologic unit 03050107, on downstream side of
                    bridge on county road 90, 75 feet downstream of Smith Creekand 2.2 mi southwest of Pauline.
                    DRAINAGE AREA.--8.97 mi     2

                    PERIOD OF RECORD.--1967 to 1969; 1974 to current year

                    GAGE.--Water-stage recorder from 1967 to 1969. Crest-stage gage from 1974 to current year.

                    REMARKS.--Records good.
                    EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 4,000 ft             3/a, Oct. 9, 1977, gage height 13.61 feet.
                    STAGE DISCHARGE RELATION.--Defined by current-meter measurements below 162 ft                 3/a and graphically extended on
                         logarithmic plotting paper.

                           FLOOD-FREQUENCY DATA (ft/s)                               LOG-PEARSON TYPE III STATISTICS (LOG UNITS1
                            18 YEARS OF RECORD                                       Mean                              -   2.932
                           LOG-PEARSON TYPE III                                      Standard Deviation                -    0.359
                               Q     =    882                                        Station Skew                     - -0.221
                               Q 2   =   1730
                                 5   =   2410
                               Q10       3460
                               Q25   =
                                     =   4220
                               Q50       5100
                               Q100  =

                                                                        Peak Stages and Discharges


                    Water      Date    Gage      Discharge        Water       Date       Gage    Discharge         Water      Date      Gage     Discharge
                    year              height                      year                 height                      year                he
                                        (ft)       (ft 3                                               3                                 (ight         3
                                                       /a)                               (ft)      (ft /a)                               ft)       (ft /a)


                    1967     July    7    6.91         983        1977      Oct.    9    13.61        4,000        1983     Feb.  15     7.80         1t240
                    1968     Jan.  10     5.69         642        1978      Jan.  26     5.61          622         1984@    Aug.  17     7.60         1,180
                    1969     Apr.  16     8.73        1,590       1979      Apr.  13     7.78         1,230        1985     Nov.  30     7.75         1,225
                    1974     Jan.    1    6.15         762        1980      May   20     5.67          637         1986     Jan.  24     3.41           201
                    1975     Mar.  15     8.41        1,500       1981      Feb.  10     1.10            21        1987     Dec.  28     4.78           430
                    1976     Oct.  18    10.46        2,310       1982      Dec.  31     8.25         1,420        1988     Mar.  23     3.41           201














































                                                                                        80










                                                                   SANTEE RIVER BASIN

                                                        02160000 FAIRFOREST CREEK NEAR UNION, S.C.


             LOCATION.--Lat 34*4014511, long 81*41'25", Union County, Hydrologic Unit 03050107, on right bank at downstream
                   side of bridge on State Highway 49, 0.3 mi downstream from Buffalo Creek, 4.3 mi southwest of Union, and at
                   mile 7.5.
             DRAINAGE AREA.--183 m12.

             PERIOD OF RECORD.--June 1940 to current year.

             GAGE.--Water-stage recorder prior to September 1971. Crest-stage gage thereafter. Datum of gage is 393.91 ft
                   National Geodetic Vertical Datum of 1929.

             REMARKS.--Records good. Discharge includes some water diverted from South Pacolet River Reservoir which is
                   discharged into this stream after use.
             EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 11,700 ft3/s, Oct. 9, 1976, gage height 9.43 ft.
             STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 5,800 ft3/s and graphically extended
                 on logarithmic plotting paper.
                    FLOOD-FREQUENCY DATA (ft3    Is)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                    49 YEARS OF RECORD                                      Mean                          -    3.585
                    LOG-PEARSON TYPE    III                                 Standard Deviation            -    0.216
                       Q2    =  3,990                                       Weighted Skew                - -0.446
                       Q5    =  5,880
                       Q     =  71070
                         10     8,470
                       Q25   =
                       Q50   =  9,440
                       Q100     10,400

                                                              Peak Stages and Discharges


             Water     Date    Gage     Discharge       Water      Date       Gage    Discharge       Water      Date      Gage     Discharge
             year             height         3          year                height                    year                height
                               (ft)       (ft /s)                             (ft)     (ft 3/d)                            (ft)       (ft3 /5)


             1940    Aug. 14    7.15      6,200         1960     Feb.    7    5.40      2,950         1980     Mar.  29     6.07        4,040
             1941    July 17    6.80      5,500         1961     Feb.  22     6.53      4,960         1981     Oct.    1    4.90        2o050
             1942    Feb. 17    5.91      3,720         1962     Apr.  12     5.78      3,520         1982     Jan.    4    5.57        3,050
             1943    July 9     6.08      4,060         1963     Mar.    7    7.37      6,640         1983     Mar.  18     5.36        2,700
             1944    Mar. 20    6.69      5,280         1964     Apr.    8    7.83      7,720         1984     Dec.    7    5.81        3,500

             1945    Sept.18    6.94      5,780         1965     Oct.  16     7.53      6,980         1985     Aug.  17     6.50        4,900
             1946    Jan.   8   5.25      2,720         1966     Mar.    4    5.69      3,380         1986     Nov.    1    6.81        5,520
             1947    Jan. 20    5.75      3,480         1967     Aug.  24     6.42      4,740         1987     Mar.    1    7.22        6,340
             1948    Mar.   7   5.07      2,460         1968     Jan.  11     5.60      3,250         1988     Jan.  22     4.05        1,135
             1949    Nov. 29    7.61      7,180         1969     Sept. 4      6.85      5,600

             1950    Oct.   8   6.42      4,740         1970     Mar.  22     4.43      1,640
             1951    Oct. 20    3.90      1,200         1971     Mar.    3    6.33      4,560
             1952    Mar.   4   6.56      5,020         1972     June  22     6.04      3,980
             1953    May    2   5.52      3,130         1973     Apr.    1    7.46      6,820
             1954    Jan. 17    5.77      3,500         1974     Jan.    1    5.75      3,400

             1955    Feb.   6   5.13      2,540         1975     Mar.  15     6.94      5,780
             1956    Mar. 17    5.55      3,180         1976     Oct.  18     4.98      2,150
             1957    Apr.   9   3.77      1,010         1977     Oct.    9    9.43      11,700
             1958    Nov. 19    5.91      3,720         1978     Jan.  27     5.86      3,620
             1959    Sept.30    5.98      3,860         1979     Apr.  14     6.71      5,320
























                                                                            81










                                                                                SANTEE RIVER BASIN

                                                                     02160105 TYGER RIVER NEAR DELTA, SC


                     LOCATION.--Lat 34'32107", long 81*3215411, Union County, Hydrologic Unit 03050107, on right bank at downstream
                           side of bridge on State Highway 72 and 121, 0.9 mi downstream from Seaboard Coast Line Railroad, 0.8 mi
                           southeast of Delta, and at mile 9.0.
                     DRAINAGE AREA.--759 m12.

                     PERIOD OF RECORD.--October 1973 to current year.

                     GAGE.--Water-stage recorder. Elevation of gage is 300 ft above National Geodetic Vertical Datum of 1929 (from
                           topographic map).

                     REMARKS.--Records fair.
                     EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 30,300 fts/s, Oct. 11, 1976, gage height, 26.31 ft (from
                           floodmarks).
                     STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 16,500 ft3/s and graphically extended
                          on logarithmic plotting paper.
                            FLOOD-FREQUENCY DATA (ft3/s)                                 LOG-PEARSON TYPE III STATISTICS CLOG UNITS)
                             15 YEARS OF RECORD                                          Mean                             -   4.015
                            LOG-PEARSON TYPE       III                                   Standard Deviation               -   0.214
                                Q2    =  10,300                                          Weighted Skew                    -   0.058
                                Q5    =  15,600
                                Q10   =  19,500
                                Q25   =  24,700
                                Q     =  28 900
                                   50 =  33:200
                                Q100


                                                                          Peak Stages and Discharges


                     Water      Date     Gage      Discharge        Water      Date        Gage     Discharge         Water     Date       Gage      Discharge
                     year               height          3           year                 height          3            year                height
                                         (ft)        (ft Is)                               (ft)        (ft /5-)                              ft)       (ft 3 /5)


                     1974     Jan.    2  14.88       7,700          1979      Apr. 14      18.55       13,300         1984     May      8    16.24        9,630
                     1975     Mar.  15   20.36       16.700         1980      Mar. 29      18.39       13,000         1985     Aug. 19       16.35        9,790
                     1976     Mar.  17   15.69       8,900          1981      Oct.    1    13.55       6,190          1986     Nov. 22       17.62       11,700
                     1977     Oct.  11   26.31       30,300         1982      Feb.    5    14.71       7,520          1987     Mar. 2        20.25       16,300
                     1978     Jan.  27   17.74       11.900         1983      Mar.   18    14.69       7,540          1988     Jan. 21       11.00        3,680








































                                                                                         82









                                                                       SANTEE RIVER BASIN

                                                             02160500 ENOREE RIVER AT ENOREE, SC


               LOCATION.--Lat 34-36'38". long 81*54'35", Spartanburg Courty, Hydrologic Unit 03050108, on left bank 60 ft
                     upstream from bridge on State Highway 49, 0.6 mi upstream from Warrior Creek, 4.0 mi southeast of Enoree,
                     and at mile 47.7.
               DRAINAGE AREA.--307 m12.

               PERIOD OF RECORD.--August 1929 to current year.

               GAGE.--Water-stage prior to September 1976. Crest-stage gage thereafter. Datum of gage is 448.13 ft above
                     National Geodetic Vertical Datum of 1929. Prior to November 20, 1929, nonrecording gage at same site and
                     datum.

               REM  ARKS.--Records good. Some regulation at low and medium flow by power plants above station.
               EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 30,000 ft3/s, Oct. 2, 1929, gage height 10.5 ft (from
                    floodmark).
               STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 20,200 ftsts and graphically extended
                    on logarithmic plotting paper.
                      FLOOD-FREQUENCY DATA (ft3     /a)                         LOG-PEARSON TYPE III STATISTICS (LOG UNITS)-
                      59 YEARS OF RECORD                                        Mean                            =   3.800
                      LOG-PEARSON TYPE     III                                  Standard Deviation              -   0.249
                         Q2    =    6,230                                       Weighted Skew                   -   0.040
                         Q  5  =  10,100
                         Q        13,100
                         Q10      17,200
                         Q  25    20,500
                            50    24,100
                         Q100


                                                                  Peak Stages and Discharges


               Water     Date     Gage     Discharge        Water      Date      Gage     Discharge        Water       Date     Gage      Discharge
               year             height          3           year                height                     year                 height
                                   ft)       (ft /a)                             (ft)       (ft3 /a)                             (ft)     .(ft 3 /a)


               1930    Oct.   2     10.50     30,000        1950     Oct.   8     6.93        13,000       1970     Mar. 22       3.61       2,080
               1931    May   22     3.76       3,100        1951     Dec.   8     3.44        1,960        1971     Mar. 3        5.05       5,530
               1932    Dec.   4     5.29       7,100        1952     Mar.  29     5.82        8,960        1972     June 21       5.91       8,740
               1933    Oct.  17     6.04       9,500        1953     Feb.  22     4.29        4,110        1973     Sept.14       6.49      11,100
               1934    June   5     4.58       5,400        1954     Jan.  17     5.00        6,120        1974     Jan.    2     4.48       4,060

               1935    Aug.  25     5.70       8,430        1955     Feb.   7     4.23        4,010        1975     Mar.   14     6.40      10,700
               1936    Apr.   7     7.86      17,200        1956     Mar.  17     4.86        5,670        1976     Oct.   19     4.69       4,540
               1937    Oct.  16     7.14      13,800        1957     Mar.   1     3.53        2,350        1977     Oct.    9     7.09      13,700
               1938    Oct.  20     5.86       8,960        1958     Nov.  19     5.12        6,430        1978     Jan.   27     5.22       6,130
               1939    Aug.  18     4.35       4,270        1959     May   25     4.19        3,810        1979     Apr.   26     5.50       7,140

               1940    Aug.  14     6.86      12,800        1960     Feb.   6     4.91        5,970        1980     Mar.   29     4.92       5,160
               1941    July  10     3.68       2,690        1961     Feb.  22     5.70        8,600        1981     Oct.    1     3.80       2,780
               1942    Feb.  17     4.82       5,520        1962     Dec.  13     5.52        7,740        1982     Jan.    5     5.62       7,600
               1943    Jan.  29     5.52       7,740        1963     Mar.   7     6.76        12,600       1983     Mar.   18     4.19       3,420
               1944    Mar.  20     5.43       7,570        1964     Apr.   8     6.95        13,200       1984     May     7     5.23       6,170

               1945    Sept.18      5.11       6,430        1965     Oct.  16     5.57        7,980        1985     Feb.    4     4.09       3,210
               1946    Jan. 7       5.85       8,960        1966     Mar.   5     5.30        7,070        1986     Nov.   22     4.06       3,150
               1947    Jan. 20      4.96       5,970        1967     Feb.  18     3.99        3,250        1987     Mar.    1     7.04      13,500
               1948    May   28     4.30       4,140        1968     June   8     4.50        4,650        1988     Jan.   22     3.58       2,170
               1949    Nov.  29     6.18      10,200        1969     Jan.  21     5.17        5,940


























                                                                                83










                                                                         SANTEE RIVER BASIN

                                                               02160700 ENOREE RIVER AT WHITMIRE, SC


                    LOCATION  '--Lat 34*30'33", Ions 81*35'54", Union County, Hydrologic Unit 03050108, on left bank, at upstream
                         side of bridge on U.S. Highway 176, 0.4 mi downstream from Seaboard Coast Line Railroad, 0.5 mi northeast of
                         Whitmire, and at mile 19.2.
                    DRAINAGE AREA.--444 m12.

                    PERIOD OF RECORD.--October 1973 to current year.

                    GAGE.--Water-stage recorder. Datum of gage is 300.00 ft above National Geodetic Vertical Datum of 1929.

                    REMARKS.--Records fair.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 19,700 ft3/s, Oct. 10, 1976.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 11,000 ft3/s and graphically extended
                        on logarithmic plotting paper.
                          FLOOD-FREQUENCY DATA (ft3/s)                              LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                          15 YEARS OF RECORD                                        Mean                         -    3.747
                          LOG-PEARSON TYPE    III                                   Standard Deviation           -    0.238
                              Q2   =   5,450                                        Weighted Skew                -    0.268
                              Q    =   81770
                                5  =  11,400
                              Q10  =
                              Q       15,300
                                25    18,600
                              Q50
                              Q100    22,200


                                                                     Peak Stages and Discharges


                    Water     Date    Gage     Discharge       Water     Date       Gage     Discharge       Water     Date      Gage       Discharge
                    year            height                     year                 height                   year               height
                                      (ft)      (ft3  /s)                           (ft)       (ft3/s)                             ft)       (ft3/s)


                    1974   Jan.    3   24.11       3,980       1979     Apr. 15     26.45       6,790        1984     May     8    25.70        5,920
                    1975   Mar.  15    28.92      10,800       1980     Mar. 29     26.43       6,760        1985     Feb.    4    22.93        3,420
                    1976   Mar.  18    24.76       4,860       1981     Oct.    2   21.54       2,510        1986     Nov.   22    24.58        4,690
                    1977   Oct.  10    32.58      19,700       1982     Jan.    5   26.23       6,560        1987     Mar.    2    27.86        8,780
                    1978   Jan.  27    26.20       6,540       1983     Mar.   28   23.36       3,710        1988     Jan.   22    21.41        2,530










































                                                                                    84










                                                                    SANTEE RIVER BASIN

                                                           02161500 BROAD RIVER AT RICHTEX, SC


              LOCATION.--Lat 34*11'05", long 81*11'48", Richland County, Hydrologic Unit 03050106, on right bank 0.8 mi west
                    of Richtex 1.2 mi upstream from Little River, 10.2 mi downstream from Parr Shoals Dam, and at mile 191.2.
              DRAINAGE AREA.--4,850 m12, approximately.

              PERIOD OF RECORD.--October 1925 to September 1983. Monthly discharge only for some periods, published in WSP
                    1303.

              REVISED RECORDS.--WSP 757: 1930(M). WSP 972: Drainage area. WSP 1383: 1929(M), 1933.

              GAGE.--Water-stage recorder. Datum of gage is 184.84 ft above National Geodetic Vertical Datum of 1929.

              REMARKS.--Records good. Regulation at low and medium flow by powerplant above station.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 228,000 ft3/s, Oct. 3, 1929, gage height, 30.7 ft (from
                    floodmarks).
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 82,800 ft3/s and extended on basis of
                    computation of peak flow over Parr Shoals Dam.
                     FLOOD-FREQUENCY DATA (ft3/s)                            LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     58 YEARS OF RECORD                                      Mean                           -    4.642
                     LOG-PEARSON TYPE III                                    Standard Deviation             -    0.210
                              =   59,000                                     Station Skew                   .    0.636
                         Q2
                         Q5   =   89,700
                         Q 10 =   115,000
                         Q    =   153,000
                         Q 25 =   187 000
                           50 =   225'000
                         Q100


                                                                Peak Stages and Discharges


              Water     Date      Gage    Discharge       Water      Date       Gage    Discharge       Water      Date     Gage     Discharge
              year             h7ight      (ft3/s)        year               height      (ft3           year               height         3
                                  ft)                                           (ft)          /a)                            (ft)      (ft /s)


              1926    Jan. 20     12.01     40,300        1946     Jan.   9     13.86     59,200        1966       Mar. 6     14.79      65,300
              1927    Feb. 25       9.14    28,400        1947     Jan.  21     13.72     57,800        1967       Aug. 25    16.09      74,500
              1928    Aug. 17     30.10    222,000        1948     Feb.  14     12.40     49,400        1968       Jan. 12    11.90      46,200
              1929    Sept.28     18.32     88,200        1949     Nov.  30     18.59     95,700        1969       Apr. 19    12.91      52,700
              1930    Oct.   3    30.70    228,000        1950     Oct.   9     12.75     52tOOO        1970       Aug. 12    10.97      40,600

              1931    Dec.   7      7.81    23,000        1951     Dec.   9     9.18      30,600        1971       Mar. 4     13.73  .   58,000
              1932    Jan.   9    14.18     51,200        1952     Mar.   6     17.39     84,700        1972       June 23    14.18      61,600
              1933    Oct.  18    19.72    101t000        1953     Feb.  23     11.15     42,000        1973       Feb. 4     16.04      74,100
              1934    Mar.  29    10.48     34,400        1954     Jan.  24     14.68     64,700        1974       Apr. 6     12.11      47,500
              1935    Oct.  12    17.86     84,600        1955     Apr.  15     11.36     43,200        1975       Mar. 16    18.52      94,900

              1936    Apr.   8    24.96    157,000        1956     Mar.  16     11.24     42,000        1976       Oct. 20    10.03      35,200
              1937    Oct.  18    16.12     72,400        1957     Apr.   7     9.35      31,800        1977       Oct. 11    23.67      146,000
              1938    Oct.  21    13.53     55,800        1958     Nov.  21     13.35     55,900        1978       Jan. 27    14.79      64,500
              1939    Mar.   2    13.12     53,400        1959     Dec.  30     9.31      31,200        1979       Feb. 26    15.80      72,300
              1940    Aug.  16    21.08    120,000        1960     Oct.   1               55t9OO        1980       Mar. 30    14.74      64,200

              1941    July   7    12.41     49,400        1961     Feb.  25     13.50     56,600        1981       Oct. 1     12.07      46,700
              1942    Feb.  18    12.99     53,300        1962     Jan.   7     13.42     55,900        1982       Jan. 5     14.43      62,100
              1943    Jan.  30    13.63     57,200        1963     Mar.   8     16.18     75,300        1983       Mar. 19    12.41      48,400
              1944    Mar.  21    17.40     84,700        1964     Apr.   9     19.00     99,500
              1945    Sept.19     18.68     96,600        1955     Oct.  18     19.25     102,000

























                                                                             85











                                                                        SANTEE RIVER BASIN

                                                              02162010 CEDAk CREEK NEAR BLYTHEWOOD, SC


                    LOCATION.--Lat 34*11'44", long 81*06'13", Richland County, Hydrologic Unit 03050106, on right bank, at
                           downstream side of bridge on State Road 59, 0.2 mi above Williams Branch, 8.0 mi southwest of Blythewood,
                           and at mile 6.9.
                    DRAINAGE AREA.--48.9 m12.

                    PERIOD OF RECORD.--November 1966 to September 1983; February 1985 to current year.

                    GAGE.--Water-stage recorder. Elevation of gage is 240 ft above National Geodetic Vertical Datum of 1929 (from
                           topographic map).

                    REMARKS.--Records good.
                    EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 4,870 ft        3/s, July 4, 1968, gage height, 18.42 ft.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 3,730 fts/s and graphically extended
                       on logarithmic plotting paper.
                           FLOOD-FREQUENCY DATA (ft3/s)                         STATISTICS (LOG UNITS)
                           121 YEARS OF RECORD                                    Mean                          -   3.430
                           GRAPHICAL  SOLUTION                                    Standard Deviation            -   0.063
                              Q 2   =  2,780                                      2Station Skew                 = -1.410
                              Q     =  3,930
                              Q 5   =  41390
                                10     4,750
                              Q25
                              Q 50  =  4 900
                              Q100  =  5:150

                                                                    Peak Stages and Discharges


                    Water     Date    Gage     Discharge       Water      Date     Gage     Discharge       Water     Date      Gage     Discharge
                    year             height         3          year               height         3           year              height         3
                                      (ft)      (ft /s)                            (ft)      (ft /s)                            (ft)       (ft /a)


                    1967    Aug.   23    9.34    1,890         1977     Mar,  13    15.97     3,990         1987    Jan. 19      13.53       2,550
                    1968    July   4   18.42     4,870         1978     May    9    14.01     3,250         1988    Apr. 11       6.23         689
                    1969    Apr.   16  16.30     4,060         1979     Jan,  23    15.03     3,560
                    1970    Mar.   22  11.29     2,300         1980     Mar,  29    13.76     3,110
                    1971    Mar.   3   12.81     2,830         1981     Feb@  11    12.34     2,630

                    1972    Jan.   11    8.55    1,460         1982     Jan,    1   14.17     3,260
                    1973    Feb.   3   16.03     3,960         1983     Mar,  17    16.22     4,000
                    1974    Apr.   5     9.14    1,640         1984
                    1975    July   15  13.26     2,990         1985     June 30       5.28       436
                    1976    Mar.   16  12.24     2,630         1986     Mar, 19       8.86    1,360

                           1The frequency relation for this    stream  had a sharp break   at about the 5-year recurrence interval because of
                    a change in storage where flow breaks      out of  a deeply incised main channel. The logarithms of annual peak
                    discharges for this station could not      be fitted to a Pearson type III distribution; therefore, the flood
                    frequency was determined graphically.
                           2Station skew computed using graphical frequency relation.



















                                                                                  86










                                                                   SANTEE RIVER BASIN

                                                       02162500 SALUDA RIVER NEAR GREENVILLE, SC


              LOCATION,--Lat 34*50'32", long 82*28'51", Pickens County, Hydrologic Unit 03050109, on right bank 700 ft
                    upstream from bridge on State Road 124, 1.6 mi donstream from Saluda Lake Dam, 2.4 mi upstream from Georges
                    Creek, 4.6 mi west of City Hall in Greenville, and at mile 132.0.
              DRAINAGE AREA.--295 m12.

              PERIOD OF RECORD.--October 1941 to September 1978, October 1980 to current year. Monthly discharge only for some
                    periods, published in WSP 1303.

              GAGE.--Water-stage recorder until 1978, crest-stage gage thereafter. Elevation of gage is 797.48 ft above
                    National Geodetic Vertical Datum of 1929.

              REMARKS.--Records good. Some regulation at low and medium flow by powerplant at Saluda Lake. Capacity of
                    reservoirs insufficient to affect monthly figures of runoff. About 41,688,041 gal per day or 64.5 ft3/s
                    diverted above station for City of Greenville water supply during water year.            City of Greenville began
                    diverting water from Saluda River (Table Rock Reservoir) in 1930; supplemented by North Saluda Reservoir in
                    1961.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 11,000 ft3/s, Oct. 7, 1949, gage height, 19.38 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 7,540 fts/s and extended on basis of
              computation of peak flow over the dam at Saluda Lake.
                     FLOOD-FREQUENCY DATA (ft3    /s)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     43 YEARS OF RECORD                                     Mean                           -   3.658
                     LOG-PEARSON TYPE    III                                Standard Deviation             -   0.184
                        Q2        4,560                                     Weighted Skew                 = -0.035
                        Q  5      61490
                        Q         71800
                        Q  10
                           25     9,480
                        Q50   =   10,800
                        Q100  ,   12,000

                                                               Peak Stages and Discharges


              Water     Date      Gage   Discharge       Water      Date       Gage   Discharge       Water      Date     Gage      Discharge
              year             height                    year               height                    year               height
                                  (ft)      (ft3ls)                            (ft)     (ft3/s)                            (ft)      (ft3/a)


              1942    Feb.  17    11.63     5,980        1957     Apr.    6     9.62     4,780        1972     June  21      9.86     5,380
              1943    Dec.  30    11.01     5,620        1958     Apr.  29      6.65     2,970        1973     May   28     12.36     6,960
              1944    Mar.  30     8.37     4,060        1959     June    1     7.65     3,580        1974     Jan.   1      7.56     3,830
              1945    Mar.  27     6.26     2,740        1960     Mar.  31      7.56     3,520        1975     Mar.  14     13.78     7,540
              1946    Jan.   8    14.48     7,720        1961     June  23     15.43     8,300        1976     May   30      8.01     4,160

              1947    Jan.  20     7.42     3,460        1962     Dec.  12     12.04     6,220        1977     Mar.  30     11.38     6,310
              1948    Aug.   5     6.87     3,140        1963     Mar.    6    10.43     5,260        1978     Jan.  26      9.15     4,950
              1949    July  13    12.12     6,280        1964     Apr.    8     9.57     4,760        1981     Oct.   1      5.11     1,900
              1950    Oct.   7    19.38     11,000       1965     Oct.    5    18.14     10,100       1984     Dec.  11      8.43     4,450
              1951    Dec.   8     6.76     3,080        1966     Feb.  14     10.62     5,390        1985     Aug.  17      7.38     3,680

              1952    Mar.  23    10.94     5,560        1967     Aug.  24     14.19     7,530        1986     Nov.  30      5.23     2,020
              1953    Feb.  22     8.87     4,360        1968     Mar.  13      7.46     3,500        1987     Mar.   2     11.60     6,430
              1954    Jan.  23    15.05     8,040        1969     Apr.  18      9.23     4,770        1988     Aug.   5      5.47     2,235
              1955    Feb.   7     7.85     3,700        1970     Aug.  -8      5.95     2,580
              1956    Apr.  16     7.38     3,460        1971     Oct.  30      5.54     2,290




























                                                                            87











                                                                         SANTEE RIVER BASIN

                                                               02153000.SALUDA RIVER NEAR PELZER, SC


                    LOCATION.--Lat 34*40'05", long 82*27'55", Anderson County, Hydrologic Unit 03051009, on right bank, 0.4 mi
                         downstream from Hurricane Creek, 1.9 mi north of Pelzer, and at mile 114.2.
                    DRAINAGE AREA.--405 m12.

                    PERIOD OF RECORD.--December 1929 to 1978.

                    GAGE.--Crest-stage gage 1972-88. Elevation of gage is 727.75 ft above National Geodetic Vertical Datum of 1929.

                    REMARKS.--Records good. Some regulation at low and medium flow by powerplant above station.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 13,600 ft3/s, Oct. 7, 1949, gage height, 10.53 ft.
                    STAGE-61SCHARGE RELATION. --Defined by current-meter measurements below 11,300 ftS/s and graphically extended
                         on logarithmic plotting paper.
                          FLOOD-FREQUENCY DATA (ft3/s)                            LOG-PEARSON-TYPE III STATISTICS (LOG UNITS)
                          57 YEARS OF RECORD                                      Mean                           =    3.798
                          LOG-PEARSON TYPE    III                                 Standard Deviation             =   0.179
                             Q2     =   6,380                                     Weighted Skew                  = -0.238
                             Q5     =   8,910
                             Qlo    = 10,500
                             Q25    = 12,500
                             Q50    = 13,900
                             Q100     15,200


                                                                    Peak  Stages and Discharges
                    Water   Date      Gage    Discharge        Water      Date     Gage     Di:ch;rge       Water       Date     Gage     Discharge
                    year            height         3           year               height         3          year                 h7ight     (ft3/s)
                                      (ft)      (ft /s)                            (ft)         t s)                              ft)

                    11929   Sept.27      5.80     6,460        1949     Nov. 29      7.37       8,270       1969     Apr.  18     7.86       8,960
                    1930    Oct.    2    6.88     9,400        1950     Oct.   7     10.53     13,600       1970     Aug.   9     4.00       2,850
                    1931    May   22     3.90     2,750        1951     Dec.   8     4.76       41120       1971     Mar.   3     4.52       3,630
                    1932    Dec.  15     5.08     4,900        1952     Mar. 24      7.40       8,370       1972     June  21     6.24       6,280
                    1933    Oct.  17     6.39     7,990        1953     Feb. 22      5.82       5,720       1973     May.  29     6.16       6,160

                    1934    Mar.    5    5.80     6,460        1954     Jan. 24      7.89       9,220       1974     Apr.   5     5.10       4,500
                    1935    Jan.  10     5.54     5,760        1955     Feb.   7     5.28       4,920       1975     Mar.  15     7.72       8,720
                    1936    Apr.    7    10.26   13,300        1956     Apr. 16      5.88       5,880       1976     Jan.  28     5.62       5,290
                    1937    Jan.    3    8.00     9,390        1957     Apr.   6     5.75       5,720       1977     Mar.  30     7.80       8,860
                    1938    Oct.  19     8.54    10,200        1958     Apr. 29      5.25       4,760       1978     Jan.  26

                    1939    Aug.  20     6.24     6,360        1959     June   1     4.97       4,440       1979     Apr.  26     6.57       6,810
                    1940    Aug.  14     8.31     9,920        1960     Mar. 31      5.43       5,080       1980     Jan.  18     5.92       5,770
                    1941    July    9    3.76     2,540        1961     June 23      7.87       9,220       1981     Oct.   1     6.09       6,040
                    1942    Feb.  17     6.66     7,180        1962     Dec. 13      8.11       9,560       1982     Feb.   3     6.20       6,220
                    1943    Jan.  28     6.49     6,840        1963     Mar.   6     8.53      10,200       1983

                    1944    Mar.  20     5.78     5,720        1964     Apr.   8     8.60      10,200       1984     Dec. 12      5.60       5,260
                    1945    Mar.  27     4.57     3,720        1965     Oct.   6     9.63      12,000       1985     Aug. 17      5.03       4,400
                    1946    Jan.    7    8.63    10,400        1966     Mar.   4     6.62       6,890       1986     NOV.  30     3.85       2,640
                    1947    Jan.  20     5.75     5,720        1967     Aug. 25      7.46       8,280       1987     Mar.   1     7.50       8,350
                    1948    Aug.    6    4.28     3,340        1968     Dec. 12      5.32       4,830       1988     Jan.  20     4.26       3,240


                         iNo record Oct 1 to Aug 31.

















                                                                                  88









                                                                    SANTEE RIVER BASIN

                                                       02163500 SALUDA RIVER NEAR WARE SHOALS, SC


              LOCATION.--Lat 34*23'01", long 82*13112", Greenwood County, Hydrologic Unit 03050109, on right bank 2.0 mi
                    southeast of Ware Shoals, 2.5 mi downstream from Ware Shoals Dam, 5.0 mi upstream from Turkey Creek, and at
                    mile 83.7.
              DRAINAGE AREA.--581 m12.

              PERIOD OF RECORD.--October 1938 to current year. Monthly discharge only for some periods, published in WSP 1303.

              GAGE.--Water-stage recorder and data collection platform. Elevation of gage is 438.15 ft above National Geodetic
                    Vertical Datum of 1929.

              REMARKS.--Records good. Some regulation at low and medium flow by powerplants upstrea               m. Capa%ity of reservoirs
                    insufficient to affect monthly figures of runoff. About 41,517,000 gal per day or 64.2 ft /s diverted above
                    station for City of Greenville water supply during water year. City of Greenville began diverting water
                    from Saluda River (Table Rock Reservoir) in 1930; supplemented by North Saluda Reservoir in 1961.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 20,700 ft.3/s, Sept. 14, 1973, gage height, 22.85 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 13,800 ft3/s and extended by indirect
                  computation of'peak flow over dam.
                     FLOOD-FREQUENCY DATA (ft,3    /s)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     50 YEARS OF RECORD                                       Mean                           -   3.947
                     LOG-PEARSON TYPE     III                                 Standard Deviation             -   0.218
                        Q2     =  9,180                                       Weighted Skew                 - -0.430
                        Q5     =  13,600
                        Q      =  16,440
                        Q  10  .  19 700
                           25       1
                        Q50    =  22,000
                        Q100   =  24,200

                                                                Peak Stages and Discharges


              Water     Date      Gage    Discharge       Water      Date      Gage     Discharge       Water       Date     Gage     Discharge
              year             height          3          year                height                    year                height
                                  (ft)       (ft /5)                           (ft)       (ft3  /5)                          (ft)       (ft3 /a)


              1939    Aug.  18    14.29      10,500       1959     June   2       9.92      5,070       1979      Feb.  25     15.05     9,150
              1940    Aug.  13    20.48      20,600       1960     Oct.  11     11.37       5,970       1980      Mar.  28     14.36     8,460
              1941    July   7      9.27     5,010        1961     Feb.  22     17.91      12,600       1981      Oct.   1      6.02     2,660
              1942    Mar.  21    13.67      8,300        1962     Dec.  13     18.52      13,600       1982      Jan.   4     15.38     9,510
              1943@   Jan.  18    18.18      15,300       1963     Mar.   6     21.12      17,600       1983      Apr.  10      9.24     4,390

              1944    Mar.  20    16.45      11,700       1964     Apr.   8     20.63      16,700       1984      Dec.   6     14.81     8,910
              1945    Sept.13     10.99      5,970        1965     Oct.   5     18.17      13,000       1985      Aug.  18      9.08     4,290
              1946    Jan.   7    17.71      14,300       1966     Mar.   4     16.06      10,300       1986      Nov.  30      7.25     3,270
              1947    Jan.  20    13.25      7,880        1967     Aug.  25                12,000       1987      Mar.   2     15.67     9,840
              1948    July  16    10.48      5,410        1968     July  10     18.16      12,900       1988      Jan.  21      7.69     3,490

              1949    Nov.  29    19.12      16,500       1969     Jan.  20     17.06      11,500
              1950    Oct.   8    18.45      14,900       1970     Mar.  22       7.04      2,840
              1951    Dec.   8      9.11     4,740        1971     Mar.   3     16.38      10,700
              1952    Mar.  24    19.20      14,100       1972     Jan.  10     15.96      10,200
              1953    Feb.  21    13.59      8,180        1973     Sept.14      22.85      20,700

              1954    Jan.  24    15.34      9,700        1974     Jan. 1       14.36       8,460
              1955    Feb.   7    12.38      7,090        1975     Sept.18      17.42      12,000
              1956    Sept.26     14.61      9,080        1976     Mar. 16      13.87       7,980
              1957    Apr. 7      11.27      5,830        1977     Oct. 9       16.47      10,800
              1958    Nov, 19     16.48      10,400       1978     Jan. 26      15.92      10,100

























                                                                              89










                                                                          SANTEE RIVER BASIN

                                                              02165000 REEDY RIVER NEAR WARE SHOALS, SC


                    LOCATION.--Lat 34*25'02'', long 82*09'10", Laurens County, Hydrologic Unit 03050109, on downstream                  side of State
                          Road S-30-36 bridge, 5.5 mi northeast of Ware Shoals, 6.0 mi downstream from Boyd Mill Dam, and at mile 8.7.
                    DRAINAGE AREA.--236 mi2.

                    PERIOD OF RECORD.--March 1939 to current year.

                    REVISED RECORDS.--WSP 892: 1939. WSP 922; Drainage area. WSP 1723: 1940, 1943, 1948-49, 1952(M). WSP 1904:
                          1940, 1943, 1946, 1949, 1952. WDR-SC-77-1: Drainage area. WDR-SC-78-1: Drainage area.

                    GAGE.--Water-stage recorder. Datum of &age is 453.86 ft above National Geodetic Vertical.Datum of 1929. Prior
                          to Oct. 1, 1977, at site 4.1 mi upstream at datum 26.76 ft higher.

                    REMARKS.--Records good. Some regulation at low and medium flow by powerplants above station. Capacity of
                          reservoirs insufficient to affect monthly figures of runoff. Diversion into basin by City of Greenville
                          above station 02163500.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 11,000 ft3/s, Sept. 14, 1973, gage height, 15.40 ft.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 7,650 ft3/s and graphically extended
                       on logarithmic plotting paper.
                           FLOOD-FREQUENCY DATA (ft3/s)                            LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                           49 YEARS OF RECORD                                      Mean                           =    3.624
                           LOG-PEARSON TYPE     III                                Standard Deviation             =    0.237
                              Q2    =   4,290                                      Weighted Skew                 = -0.196
                              Q     =   6 700
                              Q5         I
                                10  =   81400
                              Q2.5  =  10,600
                              Q50   =  12,200
                              Q100     13,900


                                                                     Peak Stages and Discharges


                    Water     Date     Gage     Discharge       Water      Date       Gage    Discharge       Water      Date      Gage     Discharge
                    year             height         3           year               height         3           year                height         3
                                       (ft)       (ft /5)                             (ft)     (ft /s)                             (ft)      (ft /a)


                    1940    Aug. 14     13.32     9,410         1960     Oct.  11      5.76     3,620         1980     Mar.  29    12.23        4,210
                    1941    July 17      4.40     2,380         1961     Feb.  22     11.18     7,940         1981     Feb.  12     7.64        1,390
                    1942    Feb. 18      6.50     4,270         1962     Dec.  13     10.97     7,800         1982     Jan.   5    13.86        5,120
                    1943    Jan. 19      9.69     6,960         1963     Mar.   7     14.92    10,600         1983     Mar.  28     8.60        2,100
                    1944    Mar. :91     7.41     4,840         1964     Apr.   9     11.84     8,390         1984     Dec.   7    12.55        4,370

                    1945    Sept.17      4.64     2,580         1965     Oct.   6      7.54     5,320         1985     Feb.   2     8.84        2,280
                    1946    Jan.   8    10.44     7,380         1966     Mar.   5      6.94     4,830         1986     Nov.  30     7.56        1,560
                    1947    Jan. 21      5.48     3,470         1967     Jan.   9      4.45     2,370         1987     Mar.   2    13.96        5,080
                    1948    Mar.   8     4.74     2,680         1968     July  10      8.31     5,920         1988     Jan.  21     8.06        1,740
                    1949    Nov.  29    10.54     7,520         1969     Apr.  20      7.22     5,150

                    1950    Oct.   8     7.56     5,370         1970     Mar.  23      3.58     1,600
                    1951    Sept. 8      4.28     2,220         1971     Mar.   3      5.66     3,820
                    1952    Mar. 5       8.60     6,120         1972     June  22     11.20     7,940
                    1953    Feb. 22      5.31     3,200         1973     Sept.14      15.40    11,000
                    1954    Jan.  17     7.12     4,960         1974     Jan.   2      5.63     3,790

                    1955    Feb.   8     5.02     2,960         1975     Feb.  22     11.38     8,070
                    1956    Sept.27      6.29     3,970         1976     Oct.  19      5.58     3,740
                    1957    Apr. 6       3.87     1,830         1977     Dec.   9      9.67     6,870
                    1958    Nov. 20      7.88     5,600         1978     Oct.  27     12.90     4,020
                    1959    Sept. 9      4.15     2,130         1979     Apr.  14     13.71     4,950
























                                                                                   90










                                                                    SANTEE RIVER BASIN

                                                    02165200 SOUTH RABON CREEK NEAR GRAY COURT, SC


              LOCATION.--Lat 34*31'12", long 82*09'26", Laurens County, Hydrologic Unit 03050109, on left bank, 125 ft
                    upstream from U.S. Highway 76, 2.5 mi upstream from North Rabon Creek and 7.0 mi southwest of Gray Court.
              DRAINAGE AREA.--29.5 mi2.

              PERIOD OF RECORD.--January 1967 to September 1981.

              GAGE.--Water-stage recorder. Datum of gage is 548.37 ft National Geodetic Vertical Datum of 1929.

              REMARKS.--Records good.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 4,100 ft3/s Sept. 14, 1973; gage height, 9.86 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 1,170 ft3/s and graphically extended
                  on logarithmic plotting paper.
                     FLOOD-FREQUENCY DATA (ft3     /s)                       LOG-PEARSON TYPE III STATI     TICS  (LOG UNITS)
                     15 YEARS OF RECORD                                      Mean                               2.912
                     LOG-PEARSON TYPE    III                                 Standard Deviation             .   0.330
                        Q2    =      812                                     Weighted Skew                  =   0.038
                        Q  5  =   11540
                        Q         2,160
                        Ql'       3 110
                           25      1
                        Q         3,940
                           50     4,870
                        Q100


                                                                Peak Stages and Discharges


              Water     Date    Gage      Discharge       Water     Date        Gage   Discharge        Water     Date      Gage     Discharge
              year              height                    year               height         3           year                height
                                  ft)       (ft3 13)                            (ft)     (ft /a)                            (ft)        (ft 3/5)


              1967    July    8   1.91        353         1972     Jan. 11      4.31       1,240        1977      Oct. 9      4.60       1,490
              1968    Jan.  10    3.41        803         1973     Sept.14      9.86       4,100        1978      Jan. 26     3.77       1,020
              1969    Jan.  20    4.06        998         1974     Jan. 1       2.91        684         1979      Sept.30     1.93        282
              1970    Mar.  22    2.04        379         1975     Mar. 14      5.17       1,660        1980      Apr. 15     3.49        874
              1971    Mar.    3   4.19       1,190        1976     Mar. 16      3.30        780         1981      Oct. 1      1.70        219

















































                                                                             91










                                                                          SANTEE RIVER BASIN

                                                               02167000 SALUDA RIVER AT CHAPPELLS, SC


                   LOCATION.--Lat 34*10'4011, long 81*51'40", Newberry County, Hydrologic Unit             03050109, an left bank on downstream
                         side of bridge on State Highway 39 at Chappells, 6.7 mi downstream from           dam at Lake Greenwood,           9.8 mi
                         upstream from Little River, and at mile 52.3.
                   DRAINAGE AREA.--1,360 m12.

                   PERIOD OF RECORD.--October 1926 to current year. Monthly discharge only for some periods, published in WSP 1303.
                         Gage-height records collected since 1905 are contained in reports of National Weather Service.

                   GAGE.--Water-stage recorder and data collection platform. Datum of &age is 362.89 ft above National Geodetic
                         Vertical Datum of 1929. Oct. 1, 1926 to Sept. 30, 1939, nonrecording or recording gage at site 300 ft
                         downstream at datum 363.79 ft above mean sea level. Oct. 1, 1939 to Oct. 7, 1964, recording gage at present
                         site and at datum 363.89 ft above mean sea level.

                   REMARKS.--Peaks are from graphs based on gage readings         by the U.S. Weather Bureau prior to June 27, 1927. Peak
                         discharges since May 1940 affected by storage in Lake Greenwood.
                   EXTREMES FOR PERIOD OF RECORD.--Maxirm        discharge, 63,700 ft3/s, Oct. 2, 1929, gage height 32.5 ft, present
                         datum.

                   EXTREMES OUTSIDE PERIOD OF RECORD.--The flood of Aug. 26, 1908 reached a stage of 36.7 ft (present site and
                         datum), from reports of National Weather Service.
                   STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 27,000 fts/a and extended on basis of
                   velocity-area studies.

                                                                    Peak Stages and Discharges


                   Water     Date     Gage     Discharge       Water      Date       Gage   Discharge        Water      Date      Gage     Discharge
                   year             height                     year               height                     year               height
                                      (ft)      (ft3 /a)                             (ft)     (ft3 /a)                            (ft)       (ft3/.)


                   1888    Sept.--     30.60                   1933     Oct.  19     21.28     19,200        1961     Feb.  26    20.71      17,400
                   1906    Dec.  22    18.60                   1934     June    7    20.94     18,000        1962     Jan.    7   17.64      10,200
                   1907    Oct.    5   13.30                   1935     Oct.  12     17.22      9,700        1963     Mar.  13    22.78      24,300
                   1908    Aug.  26    34.70                   1936     Apr.    8    28.60     49,400        1964     Apr.    8   24.98      33,200
                   1909    June    5   20.50                   1937     Jan.    5    22.03     21,400        1965     June  16    21.35      16,400

                   1910    Mar.    3   17.60                   1938     Oct.  22     20.91     18,000        1966     Mar.    5   21.41      16,600
                   1911    Oct.    9   12.20                   1939     Mar.    1    19.07     13,200        1967     Aug.  26    19.01      10,800
                   1912    Mar.  16    25.00                   1940     Aug.  14     28.66     49,700        1968     Jan.  11    16.90       8,300
                   1913    Mar.  16    22.00                   1941     July  17     14.96      7,400        1969     Apr.  19    24.32      26,200
                   1914    Dec.  31    16.70                   1942     Mar.  22     22.82     24,300        1970     Mar.  22    13.02       5,510

                   1915    Jan.    8   16.50                   1943     Jan.  29     22.21     22,100        1971     Mar.    4   22.51      19,800
                   1916    Feb.    4   20.30                   1944     Mar.  21     24.84     32,300        1972     June  22    21.69      17,400
                   1917    Mar.    6   19.00                   1945     Sept.18      13.52      6,080        1973     Apr.    2   22.75      20,600
                   1918    Aug.    4   17.00                   1946     Jan.    8    22.30     22,500        1974     Apr.    5   14.74       6,800
                   1919    Oct.  28    22.60                   1947     Jan.  21     15.68      8,100        1975     Mar.  15    24.84      28,300

                   1920    Dec.  12    19.50                   1948     Apr.    1    19.52     14,200        1976     Mar.  17    19.03      10.800
                   1921    Feb.  11    22.50                   1949     Nov.  29     24.59     31t400        1977     Oct.    9   26.47      35,200
                   1922    Feb.  17    20.00                   1950     Mar.    7    12.46      5,310        1978     Jan.  27    15.48       7,740
                   1923    Mar.  18    18.80                   1951     Apr.    3    12.39      5,430        1979     Feb.  26    21.74      17,500
                   1924    July  10    16.80                   1952     Mar.  25     24.68     31,900        1980     Mar.  29    24.24      25,800

                   1925    Jan.  20    20.50                   1953     Feb.  25     13.70      6,380        1981     Oct.    1   18.06       9,870
                   1926    Jan.  20    15.50                   1954     Jan.  24     13.57      6,320        1982     Jan.    4   23.05      21,600
                   1927    Dec.  30    15.30      7,700        1955     Apr.  15     13.78      6,460        1983     Apr.    9   15.72       7,900
                   1928    Aug.  17    29.97    56,200         1956     Apr.  18     18.79     12,400        1984     Dec.    7   22.60      20,200
                   1929    Sept.28     30.90    60,700         1957     Apr.    5    12.48      5,590        1985     Feb.    7               6,000

                   1930    Oct. 2      31.50    63,700         1958     Nov.  20     19.14     13,200        1986     Dec.    1   14.66       7,140
                   1931    Apr. 1      12.49      5,310        1959     June    3    .12.28     5,390        1987     Mar.    3   20.11      13,300
                   1932    Jan.    9   20.51    16,800         1960     Feb.  14     21.00     18,300        1988     Feb.    4   10.31       4,380





















                                                                                   92










                                                                    SANTEE RIVER BASIN

                                                        02167500 SALUDA RIVER NEAR SILVERSTREET


              LOCATION.--Lat 34*11', long 81*441, Newberry County, Hydrologic Unit 03050109, on left bank 200 ft upstream from
                   Higgins Perry Bridge on State Highway 19, 1 mi downstream from Little River, and 2.5 mi south of
                   Silverstreet.
              DRAINAGE AREA.--1,620 m12, approximately.

              PERIOD OF RECORD.--October 1926 to June 1966 (discontinued). Monthly discharge only for some periods, published
                  in WSP 1303.

              GAGE.--Water-stage recorder. Datum of gage is 345.13 ft above mean sea level, unadjusted. Prior to Oct 15,
                   1929, staff gage at same site and datum. Since Mar 8, 1939, water-stage recorder for station on Lake Murray
                   near Columbia has been used as an auxiliary gage for this station.

              REMARKS.--Records fair. Flow regulated by Lake Greenwood.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 83,800 fts/s Oct. 3, 1929, gage height, 33.97 ft.
              STAGE-DISCHARGE RELATION.--Defined      by current-meter measurements below 28,000 fts/s and extended on basis of
                   discharge measurements made at Chappells near Chapin.

                                                               Peak Stages and Discharges


              Water     Date      Gage   Discharge       Water      Date        Gage   Discharge       Water      Date      Gage     Discharge
              year             height         3          year               height          3          year               height
                                  (ft)    (ft /a)                               (ft)    (ft /a)                             (ft)      (ft3  /8)


              1928    Aug. 18     30.60     60,400       1943     Jan.  30      21.66    20,100        1958     Nov. 21                15,400
              1929    Sept.28     32.05     69,800       1944     Mar.  21      26.93    39,100        1959     Sept.30                  6,860
              1930    Oct. 3      33.97     83,800       1945     Apr.  27      15.46     9,130        1960     Feb.  14     22.54     21,100
              1931    Apr. 2      12.87       6,180      1946     Jan.   9               22,800        1961     Feb.  26     22.30     20,600
              1932    Jan. 10     21.12     18,600       1947     Jan.  21      18.12    13,000        1962     Jan.    7    20.39     15,800

              1933    Sept. 8     21.52     19,600       1948     Apr.   2      20.40    14,600        1963     Mar.  14     24.12     26,300
              1934    June  7     20.84     18,000       1949     Nov.  30      25.80    32,200        1964     Apr.    9    27.10     39,500
              1935    Oct. 11     17.22     11,500       1950     Mar.   8      14.43     6,860        1965     June  17     22.15     20,200
              1936    Apr.  8     31.89     63,000       1951     Apr.   4      14.07     6,970
              1937    Jan.  6     21.98     20,900       1952     Mar.  25      25.34    28,400

              1938    Oct. 23     19.73     15,800       1953     Feb.  25      14.20     6,860
              1939    Mar.  2     20.00     16,300       1954     Apr.   2      14.96     7,760
              1940    Aug. 15     30.29     58,300       1955     Apr.  15      16.88    10,400
              1941    July 18     15.08       8,610      1956     Apr.  18      18,62    13,200
              1942    Mar. 23,    22.96     23,700       1957     Apr.   6      14.21     6,620





































                                                                              93










                                                                          SANTEE RIVER BASIN

                                                              02169000 SALUDA RIVER NEAR COLUMBIA, SC


                   LOCATION.--Lat 34*00'50", long 81*05'17", Richland County, Hydrologic Unit 03050109, on left bank 0.4 mi
                         upstream from site of Old Saluda Mill, 1.6 mi upstream from confluence with Broad River and 3.3 mi west of
                         State Capital in Columbia, and at mile 1.67.
                   DRAINAGE AREA.--2,520 m12.

                   PERIOD OF RECORD.--August 1925 to current year.

                   GAGE.--Water-stage recorder and data collection platform. Datum of gage is 149.46 ft above National Geodetic
                         Vertical Datum of 1929. Prior to Sept. 1, 1929, at same site at datum 150.46 ft above mean sea level.

                   REMARKS.--Records good. Flow regulated by Lake Murray and Lake Greenwood.
                   EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 67,000 ft3/s, Oct. 2, 1929, gage height, 15.22 ft.
                   STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 36,000 fts/s and extended on basis of
                         discharge measurements made at Wise Ferry Bridge near Chapin.

                                                                    Peak Stages and Discharges


                   Water     Date    Gage      Discharge       Water      Date      Gage    Discharge       Water       Date     Gage     Discharge
                   year             height                     year                height                   year                 height
                                      (ft)      (ft3 /a)                            (ft)       (ft3/s)                            ft)        (ft3/s)


                   1926    Mar. 31      7.75     23,300        1951     Aug.  10    6.29       10,300       1976      July   7    7.99       18,400
                   1927    July 20      5.62     12,300        1952     June  12    6.39       10,700       1977      Mar. 22     7.95       18,200
                   1928    Aug. 18     13.04     58,200        1953     Sept. 3     6.13        9,600       1978      Jan. 26     7.80       17,400
                   1929    Mar. 6      12.43     53,600        1954     Nov. 9      6.10        9,600       1979      Feb. 26     9.53       27,200
                   1930    Oct. 2      15.22     67,000        1955     Aug.  19    6.03        9,250       1980      Mar. 30                31,000

                   1931    Sept.11      5.86       9,590       1956     Aug.  15    5.65        8,080       1981      July 11     7.68       16,300
                   1932    Sept.13      6.12     10,300        1957     Sept. 3     6.07       10,300       1982      Jan.   4    8.30       19,600
                   1933    Feb. 20      9.04     24,500        1958     Jan. 24     6.77       13,100       1983      Apr.   8    8.54       21,000
                   1934    Nov. 2       6.44     11,500        1959     Sept.30     6.26       10,300       1984      Aug.   9    8.03       18,100
                   1935    Sept. 5      7.17     14,800        1960     Feb.  13    7.02       13,200       1985      Feb.   5    7.99       18,400

                   1936    Apr. 7      14.53     61,600        1961     Apr.  12    7.33       15,200       1986      Sept.26     7.75       17,100
                   1937    Apr. 9       8.74     23,000        1962     Mar.  13    6.83       13,100       1987      Aug. 26     7.69       16,700
                   1938    Nov.  15     6.28     11,600        1963     Mar.  13    6.83       13,100       1988      Oct. 29     7.21       14,200
                   1939    Sept. 8      6.04       9,950       1964     Apr.  10    11.25      38,800
                   1940    Aug. 28      5.95       9,950       1965     June  16    13.32      53,200

                   1941    Dec.  13     6.15     10,700        1966     Mar.   4    7.16       14,300
                   1942    June  10     6.92     13,500        1967     Aug.  24               12,000
                   1943    July  22     6.09     10,300        1968     Jan.  10    7.44       15,700
                   1944    Mar.  24     9.15     25,700        1969     Apr.  19    10.82      35,700
                   1945    Sept.17      6.13     10,300        1970     Aug.  31    6.48       11,400

                   1946    Apr. 26      9.71     28,700        1971     Aug.  17    8.31       20,400
                   1947    Dec.    7    6.13     10,300        1972     Jan.  11    7.93       18,200
                   1948    Apr.    8    8.31     20,400        1973     Apr.   7    8.63       22,300
                   1949    May     1    9.16     25,700        1974     Feb.  25    8.48       21,400
                   1950    Nov.  22     6.38     10,700        1975     Feb.  19    8.22       19,800

































                                                                                   94










                                                                     SANTEE RIVER BASIN

                                                           02169500 CONGAREE RIVER AT COLUMBIA, SC


               LOCATION.--Lat 33*59'35", long 81*03'00", Lexington County, Hydrologic Unit 03050110, on right bank at
                     Columbia, 1,000 ft downstream from Gekvais Street Bridge, 1.4 mi downstream from confluence of Broad and
                     Saluda Rivers, and at mile 174.8.
               DRAINAGE AREA.--7,850 m12, approximately.

               PERIOD OF RECORD.--October 1939 to current year. Gage-height records collected at site 1,000 ft upstream October
                     1891 to December 1933 and at present site since January 1934 are contained in reports of National Weather
                     Service.

               GAGE.--Water-stage recorder. Datum of gage is 113.02 ft above National Geodetic Vertical Datum of 1929.

               REMARKS.--Records good. Flow regulated by Lake Murray and Lake Greenwood on the Saluda River and to some extent,
                     at low and medium flow, by powerplants on the Broad River.
               EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 155,000 ft3/s, Oct. 11, 1976, gage height, 29.74 ft.
               EXTREMES OUTSIDE PERIOD OF RECORD. --Maximum flood since at least October 1891, discharge 364,000 ft3/s, Aug. 27,
                     1908, gage height, 39.8 ft, present datum, at site 1,000 ft upstream, from records of National Weather
                     Service.
               STAGE-DISCHARGE RELATION, --Defined by current-meter measurements below 150,000 ft3/s and extended
                     logarithmically.

                                                                 Peak Stages and Discharges


               Water     Date    Gage     Discharge        Water      Date       Gage    Discharge       Water       Date     Gage      Discharge
               year             height         3           year               height          3          year                 height
                                  ft)       (ft /a)                              (ft)     (ft /s)                             (ft)       (ft3  Is)


               1852    Sept.--    34.40                    1926     Feb.  26     13.00     51,100        1961      Feb.  25   21.08       74,400
               1892    Jan.    20 24.60     154,000        1927     Feb.  25     10.20     39,100        1962      Jan.    8  19.69       65p2OO
               1893    Aug.    29 '21.10    110,000        1928     Aug.  18     33.50    311,000        1963      Mar.  15   23.09       91,800
               1894    Oct.    24 12.70      49,800        1929     Mar.    1    25.90    173,000        1964      Apr.  10   28.60      142,000
               1895    Oct.    10 20.40     103,000        1930     Oct.    3    33.10    303,000        1965      Oct.  18   26.18      120,000

               1896    Feb.    7  17.80      79,600        1931     Dec.    8      6.70    26,800        1966      Mar.    6  21.74       60,600
               1897    Feb.    7  21.50     115,000        1932     Jan.  10     16.70     71,600        1967      Aug.  25   23.78       97,900
               1898    Sept.25    10.20      39,100        1933     Oct.  19     21.50    115,000        1968      Jan.  12   18.81       61,200
               1899    Feb.    8  21.70     117,000        1934     Mar.  29     12.70     33,400        1969      Apr.  19   23.37       94,200
               1900    Apr.    22 22.00     120,000        1935     Oct.  12     23.30     92,300        1970      Aug.  12   15.44       45,200

               1901    Apr.    3  23.00     132,000        1936     Apr.    8    33.34    231,000        1971      Mar.    4  21.55       79,100
               1902    Mar.    2  22.00     120,000        1937     Oct.  19     20.56     70,900        1972      Jan.  12   19.26       63,900
               1903    June    9  27.20     194,000        1938     Oct.  21     18.42     57,900        1973      Apr.    2  23.%9       99,800
               1904    Aug.    10 12.20      47,500        1939     Mar.    2    19.93     66,400        1974      Jan.    2  16.87       51,600
               1905    Feb.    22 14.70      59,400        1940     Aug.  16     26.14    121,000        1975      Mar.  16   26.47      122,000

               1906    Dec.    22 20.30     102,000        1941     July  18     17.19     52,000        1976      Mar.  17   16.16       48,400
               1907    June    3     9.00    34,500        1942     Feb.  19     17.31     52,400        1977      Oct.  11   29.74      155,000
               1908    Aug.    27 39.80     364,000        1943     Jan.  20     19.44     63,400        1978      Jan.  28   21.87       81,700
               1909    June    5  22.00     120,000        1944     Mar.  21     24.57    105,000        1979      Feb.  26   23.46       94,500
               1910    Mar.    3  13.80      54,900        1945     Sept.20      24.30    102,000        1980      Mar.  30   23.29       93,100

               1911    Oct.    9  10.90      41,900        1946     Jan.    9    19.21     62,200        1981      Oct.    2  16.81       51,300
               1912    Mar.    17 30.70     256,000        1947     Jan.  21     19.42     63,400        1982      Jan.    6  22.20       84,200
               1913    Max.    16 23.20     135,000        2948     Feb.  14     17.72     54,400        1983      Mar.  18   19.65       66,000
               1914    Dec.    31 14.60      58,900        1949     Nov.  30     25.56    116,000        1984      Feb.  16   20.30       70,300
               1915    Jan.    8  17.40      76,500        1950     Oct.    9    16.77     50,200        1985      Aug.  19   17.52       54,700

               1916    July    17 31.50     272,000        1951     Dec.    9    12.27     32,000        1986      Nov.  23   18.37       58,900
               1917    Mar.    6  17.80      79,600        1952     Mar.    6    23.20     91,400        1987      Mar.    3  26.67      123,000
               1918    Jan.    31 12.20      47,500        1953     Feb.  23     15.28     43,500        1988      Jan.  23     9.78      24,700
               1919    Oct.    28 20.70     106,000        1954     Jan.  25     19.66     65,200
               1920    Aug.    28 19.50      94,100        1955     Apr.  151,   16.06     47,000

               1921    Feb.    11 24.30     149,000        1956     Apr.  18     15.22     43,100
               1922    Feb.    17 22.20     123,000        1957     Apr.    7    12.00     31,000
               1923    Mar.    18 17.70      78,800        1958     May     1    19.46     64,000
               1924    Jan.    18 15.60      64,600        1959     Sept.30      17.63     53,900
               1925    Jan.    20 23.50     139,000        1960     Oct. 1       19.68     65,200
















                                                                               95












                                                                       SANTEE RIVER BASIN

                                                            02169550 CONGAREE CREEK AT CAYCE, S.C.


                  LOCATION.--Lat 33*5611511, long 81*04140", Lexington County, Hydrologic Unit 03050110, on left bank 20 it
                        downstream from bridge on U.S. Highway 21 at Cayce, 2.1 mi upstream from Sixmile Creek, and at mile 5.4.
                  DRAINAGE AREA.--122 m12.

                  PERIOD OF RECORD.--October 1959 to September 1980 (discontinued). Occasional low-flow measurements, water years
                        1925, 1944, 1949-59.

                  GAGE.--Water-stage recorder. Datum of &age is 128.98 it National Geodetic Vertical Datum of 1929 (South Carolina
                        Highway Department benchmark). Prior to Jan. 20, 1960, nonrecording gage at same site and datum.
                  REMARKS. --Records good. About 3.3 ft3/s diverted by City of Cayce for municipal supply.
                  EKTREMES FOR PERIOD OF RECORD.--Maxirmim discharge, 1,840 fts/s, Oct. 1, 1959, gage height, 5.92 ft-.f;om
                        floodmarks.
                  STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 1,560 ft3/s and graphically extended
                        on logarithmic plotting paper.
                         FLOOD-FREQUENCY DAT (it      3/a)                      LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                         21        OF RECOU                                     Mean                           .  2.940
                          LOG=    WN   TYPE  III                                Standard Deviation             -  0.139
                            Q2    -      856                                    Weighted Skew                  .  0.310
                            Q5    -  1,130
                            Q 10  -  11320
                            Q25   -  1,580
                            Q        1 770
                              50  -  1:970
                            Q100

                                                                   Peak Stages and Discharges


                  Water     Date    Gage     Discharge       Water      Date       Gage   Discharge       Water     Date       Gage     Discharge
                                                                                                           year               height
                  year             height         3          year               height         3                                             3
                                    (ft)       (it /s)                             (it)     (it /a)                             it)      (it /3)


                  1960    Oct.   1   5.92       1,840        1970     Aug.  12     4.55        800         1980    Mar. 29     4.29        650
                  1961    Aug.   5   4.81       1,050        1971     Mar.    4    5.09       1,140
                  1962    Feb.  23   4.55         912        1972     Jan.  11     4.29        650
                  1963    Jan.  21   4.14         666        1973     June  23     4.98       1,070
                  1964    Aug.  30   4.84       1,090        1974     Jan.    2    4.19        565

                  1965    Oct.  16   5.61       1,630        1975     July  is     4.77        932
                  1966    Mar.   4   4.18         596        1976     July    6    4.58        818
                  1967    Aug.  25   4.77         932        1977     Dec.  13     4.49        764
                  1968    Jan.  11   4.18         596        1978     Jan.  26     4.27        640
                  1969    Apr.  17   4.63         848        1979     Feb.  25     4.99       1,070




































                                                                                96










                                                                      SANTEE RIVER BASIN

                                                  02169630 BIG BEAVER CREEK NEAR ST. MATTHEWS. S.C.


              LOCATION.--Lat 33-44'12", long 80'57'30", Calhoun County, Hydrologic Unit 03050110, on right downstream
                    wingwall of bridge on U.S. Highway 21, 0.1 mi downstream from Rock Branch, 11.6 mi northwest of St.
                    ,Matthews, and at mile 8.2.
              DRAINAGE AREA.--10.0 m12.

              PERIOD OF RECORD.--July 1966 to current year.

              GAGE.--Water-stage recorder. Datum of gage is 164.21 ft National Geodetic Vertical Datum of 1929.

              REMARKS.--Records good.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,360 ft3/s, July 29, 1971, gage height, 6.66 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 207 ft3/s and graphically extended on
              logarithmic plotting paper.
                     FLOOD-FREQUENCY DATA (ft3j.)                         STATISTICS (LOG UNITS)
                          :MOF RECORD                                     Mean                          .  1.958
                    19AYP       @OLUTION                                 2Standard Deviation            -  0.350
                        Q     =    86                                     Station Skew                  =  0.469
                        Q 2   =  165
                        Q 5   =  260
                        Q 10  =  425
                          25  =  571
                          50  =  745
                        Q100


                                                              Peak Stages and Discharges


              Water     Date     Gage    Discharge      Water      Date      Gage    Discharge       Water     Date      Gage    Discharge
              year             height        3          year                height        3          year              height         3
                                 ft)      (ft /s)                            (ft)     (ft /s)                            (ft)      (ft /a)


              1967    Aug. 23    3.53        58         1977     June 20     3.33         54         1987     June 19      3.32       87
              1968    June  9               240         1978     June 6      4.05        112         1988    June 26       3.15       77
              1969    Apr. 16    3.88        97         1979     Sept. 5     4.73        272
              1970    Mar. 22    4.02       118         1980     Mar.  13    3.66         68
              1971    July 29    6.66      1,360        1981     Aug.  17    3.79         95
              1972    Aug. 24    3.97       101         M2       Dec.  31    3.59         63
              1973    Feb.  2    4.29       157         1983     Dec.  31    3.66         86
              1974    Aug.  6    3.71        73         1984     May   30    4.34        180
              1975    July 24    4.10       120         1985     Feb.    6   3.21         74
              1976    Jan. 27    3.33        52         1986     Nov.  22    3.57         98

                    1The logarithms of annual   peak discharges could not    be fitted to a Pearson type III distribution because of
              storage in ponds ; therefore, a graphical solution was used that followed the systematic record at the lower end
              and the WRC weighted estimate at the upper end of the flood frequency curve.
                    2Station skew computed using graphical frequency relation.




















                                                                            97











                                                                SANTEE RIVER BASIN

                                                       02170000 SANTEE RIVER AT FERGUSON, SC


                  LOCATION.--Lat 33*2611511, long 80'16120", at Ferguson, Orangeburg County, Hydrologic Unit 03050111, 4 miles
                     downstream from Eutaw Creek, inundated by Lake Marion, since 1942.
                  DRAINAGE AREA.--14,600 m12.

                  PERIOD OF RECORD.--S*pt. 21, 1907 to Nov. 22, 1921 (U.S. Weather Bureau), Nov. 23, 1921 to Sept. 30, 1941.

                  GAGE.--Non recording prior to Nov. 23, 1921, recording thereafter. Datum of gage is 42.30 ft National Geodetic
                       Vertical Datum of 1929, supplementary adjustment of 1936.

                  REMARKS.--Gags heights prior to Nov. 23, 1921, furnished by the U.S. Weather Bureau. Peaks affected since
                       August 1929 by storage in Lake Murray and to a lesser degree since 1904 by storage in reservoirs on
                     Catawba, Wateree, and Broad Rivers.
                                                                                3
                  EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 374,000 ft /s, July 21, 1916, gage height 24.74 ft.

                  STAGE-DISCHARGE RELATION--Defined by current-meter measurements below 260,000 ft /a and extended on basis of
                       velocity-area studies.

                  FLOOD FREQUENCY DATA--Flow records at this site were affected by regulation and were not used in the
                       regionalization analyses. Site is currently inundated by Lake Marion; therefore frequency data were not
                       computed.



                                                            Peak Stages and Discharges


                 Water    Date   Gage    Discharge     Water     Date     Gage   Discharge     Water    Date      Gage    Discharge
                 year            height   (ft3         year              height      3         year              h7ight     (ft3/5)
                                 (ft)          /8)                        (ft)    (ft /5)                          ft)


                 1908  Aug. 31   23.70    344,000      1923    Mar. 23    15.20    89,000      1938    Oct. 27    13.54      38,000
                 1909  June 10   15.62    1D1,000      1924    Jan. 23    13.87    50,000      1939    Mar. 7     15.1       86,000
                 1910  Mar.  7   13.90     50,000      1925    Jan. 23    17.13   146,000      1940    Aug. 21    14 07     56 000
                                                                                                                 215*98     348:000
                 1911  Jan. 10   13.47     38,000      1926    Mar.  3    13.43    35,900      1941    July 23
                 1912  Mar. 20   19.44    215,000      1927    Mar.  2    13.30    32,500

                 1913  Mar. 21   15.56    101,000      1928    Aug. 22    20.60   251,000
                 1914  Jan.  6   14.02     53,000      1929    Mar. 10    17.55   160,000
                 1915  Jan. 24   14.65     71,000      1930    Oct.  7    21.04   263,000
                 1916  July 21   24.74    374,000      1931    Jan. 19    12.88    26,000
                 1917  Mar. 10   14.70     74,000      1932    Jan. 15    13.95    53,000
                 1918  Feb.  6   13.90     50,000      1933    Jan.  3   114.08    56,000
                 1919  July 27   17.12    146,000      1934    June 11    13.80    47,000
                 1920  Apr.  3   14.00     53,000      1935    Oct. 17    13.81    47,000
                 1921  Feb. 15   17.47    158,000      1936    Apr. 11    20.42   245,000
                 1922  Feb. 21   15.77    106,000      1937    Jan. 11    14.19    59,000


                      10ccurred on June 12, 1934.
                      2Affected by backwater; occurred on July 25, 1941.
                      3Maximum daily discharge.


















                                                                         98









                                                                      SANTEE RIVER BASIN

                                                        02171500 SANTEE RIVER NEAR PINEVILLE, S.C.


               LOCATION.--Lat 33*27'15", long 80*09'25", Berkeley County, Hydrologic Unit 03050112, on right bank 2.4 mi
                    downstream from Lake Marion Dam, 3.0 mi upstream from Dead River, 6.7 mi west of Pineville, and at mile
                    85.0.
               DRAINAGE AREA.--14,700 m12, approximately.

               PERIOD OF RECORD.--April 1942 to current year.

               GAGE.--Water-stage recorder. Datum of gage is 23.00 ft National Geodetic Vertical Datum of 1929 (levels by South
                    Carolina Public Service Authority). Prior to Feb. 25, 1943, nonrecording gage at site 2.2 mi upstream of
                    temporary water-stage recorder operated by Corps of Engineers, at site 200 ft upstream, at different datum.

               REMARKS.--Records good. Flow completely regulated by Lake Marion. Water is diverted above station from Lake
                    Marion through canal into Lake Moultrie for generation of power and for navigation, then discharged into
                    Cooper River basin.
               EXTREMES FOR PERIOD OF RECORD.-- Maximum discharge, 155,000 ft3/s, Sept. 23, 1945, gage height, 31.1 ft (from
                    floodmarks).
               STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 9,830 fts/s and extended by computation of
                    peak flow over spillway at Lake Marion.

               FLOOD-FREQUENCY DATA--Frequency analysis not performed on Santee River near Pineville, SC, because regulation
                    pattern has been altered since rediversion in 1986.


                                                                Peak Stages and Discharges


               Water     Date     Gage    Drischarge      Water      Date      Gage     Discharge       Water      Date      Gage     Discharge
               year              height         3         year                height        3           year                height         3
                                  (ft)      (ft /a)                            (ft)      (ft /s)                             (ft)      (ft /a)


               1943    Mar. 27    23.23     32,300        1958     Nov.  30    25.85      59,700        1973     Apr.   7    25.24      50,100
               1944    Mar. 24    29.52     122,000       1959     July  27    12.36        6,840       1974     Feb.  16    21,94      21,300
               1945    Sept.23    31.10     155,000       1960     Feb.  18    26.57      69,300        1975     Mar.  19    27.91      91,700
               1946    Jan.   9   25.50     55,800        1961     Mar.    3   24.68      46,500        1976     May.   8     6.49       2,340
               1947    Feb.   8   30.04     132,000       1962     Mar.  17    24.03      36,100        1977     Oct.  14    26.01      60,200

               1948    Feb. 17    26.35     73,800        1963     Mar.  18    25.43      52,200        1978     Jan.  31    24.74      43.900
               1949    Dec.   4   28.56     114,000       1964     Apr.  13    27.07      77,200        1979     Mar.   2    27.74      85,000
               1950    Aug. 29                  782       1965     Oct.  22    27.41      88,100        1980     Mar.  30    26.58      67,900
               1951    June 24                  617       1966     Mar.    9   24.94      51,400        1981     Mar.  16     7.01       2,640
               1952    Mar. 11    27.77     89,900        1967     Aug.  26    25.42      52,400        1982     Jan.  10    26.88      72,000

               1953    Mar. 25    7.15        2,830       1968     Jan.  17    22.77      23,000        1983     Apr.  16    24.73      32,300
               1954    Apr. 17    3.53         1,140      1969     Apr.  20    24.87      45,500        1984     Dec.  13    13.65      25,600
               1955    Oct. 15    2.34          653       1970     Mar.  24    24.03      36,400        1985     Feb.  12     9.55       3,900
               1956    Apr.   7   2.51          744       1971     Mar.    8   25.51      53,600        1986     Dec.   6    22.24      116,600
               1957    Apr.   6   3.12          989       1972     Jan.  21    21.64      19,800        1987     Mar.   6     ---       87,000
                                                                                                        1988     Oct.   3     ---          1850

               iDaily discharge from one-dimensional model.











                                                                         SANTEE RIVER BASIN

                                                           02171560 SANTEE RIVER NEAR RUSSELLVILLE, SC


                    LOCATION.--Lat 33*29138", long 80*57'38", Berkeley County, Hydrologic Unit 03050112,                on downstream side of
                        U.S. Highway 52 bridge, 5.2 mi northeast of Russellville, and at mile 63.7.

                    DRAINAGE AREA.--Indeterminate.

                    PERIOD OF RECORD.--October 1978 to current year.

                    GAGE.--Water-stage recorder and data collection platform. Datum of gage is 10.59 ft above National Geodetic
                        Vertical Datum of 1929.

                    REMARKS.--Discharge records for 1986-88 are computed by utilization of the One-Dimensional unsteady flow
                        simulation model. Flow completely regulated by Lake Marion.
                    EXTREMES FOR PERIOD OF RECORD. --Maxitmm daily discharge, 133,000 ft3/s, Mar. 3, 1979; gage height, 26.54 ft.
                                                                                                            3
                    STAGE-DISCHARGE RELATION--Defined by discharge measurements below 105,000 ft /a and extended graphically on
                        logarithmic plotting paper.

                   FLOOD-FREQUENCY DATA--Frequency analysis is not performed for this station because regulation pattern has been
                     altered since rediversion in 1986.
                                                                    Peak Stages and Discharges


                   Water   Date       Gage    Discharge        Water      Date     Gage      Discharge      Water      Date      Gage    Discharge
                   year              height        3           year               height         3          year                height          3
                                      (ft)      (ft Is)                            (ft)       (ft /a)                             ft)       (ft /a)


                   1979    Mar.    3  26.54     133,000        1984     May   14   121.74        36,100
                   1980    Apr.    1  24.45     70,400         1985     Feb.  13   14 '48      2  2,430
                   1981    Mar.   17    5.38      1,150        1986     Nov.  29    ---          10,800
                   1982    Jan.   11  24.37     68,800         1987     Mar.  7     ---        215,800
                   1983    Apr.   16  23.13     47,000         1988     Feb.  22    ---           1,900

                   1September 6, backwater     from rediversion
                   2Daily discharge from one-dimensional model































                                                                                  100











                                                                   SANTEE RIVER BASIN
                                                       02171650 SANTEE RIVER BELOW ST. STEPHENS, SC


               LOCATION.--Lat 33*2410511, long 79*51'20", Berkeley County, Hydrologic Unit 03050112, on right bank, on Tract
                    13P of Francis Marion National Forest, 3.9 mi east of St. Stephens, 600 ft downstream from Mattassee Lake,
                    and at mile 52.0.
               DRAINAGE AREA--14,900 mi    2.  approximately.                                                           -

               PERIOD OF RECORD--October 1970 to September 1981.

               GAGE--Water-stage recorder. Datum of gage is 0.23 ft; National Geodetic Vertical Datum of 1929.

               REMARKS.--Records poor.
                                                                                  3
               EXTREMES FOR PERIOD OF RECORD--Maximum discharge, 96,900 ft Mar 21_22, 1975 gage height, 29.67 ft.
                                                                                                         3
               STAGE-DISCHARGE RELATION--Defined by current meter measurements below 83,700 ft /a and extended graphically on
                    logarithmic plotting paper.

               FLOOD-FREQUENCY DATA--Frequency analysis not performed for this station because regulation pattern has been
                 altered since rediversion in 1986.

                                                              . Peak Stages   and Discharges


               Water    Date     Gage     Discharge       Water     Date       Gage     Discharge       Water     Date      Gage      Discharge
               year             blight      (ft3/s)       year               height         3           year               height         3
                                  ft)                                          (ft)      (ft /a)                             (ft)      (ft Is)


               1971   Mar. 10    25.77      66,200       1976       July    1     9.00      2,150       1981     Mar. 18     ---         1,300
               1972   Jan. 23    21.29      22,700       1977       Oct.   17   25.93     58,900
               1973   Apr.    9  25.32      61,800       1978       Feb.    3   24.96     50,600
               1974   Feb.   21  20.64      19,600       1979       Mar. A      28.98     89,600
               1975   Mar.   21  29.67      98,900       1980       Apr.    4   27.52     73,400






















































                                                                              101











                                                                         SANTEE RIVER BASIN

                                                             02171680 WEDBOO CREEK NEAR JAMESTOWN, S.C.


                   LOCATION.--Lat 33*19'50", long 79*48'10", Berkeley County, Hydrologic Unit 03050112, on right downstream
                         wingwall of culvert on State Highway 45, 1.4 mi southeast of Alvin, 3.3 mi upstream from mouth, and 7.5 mi
                         northwest of Jamestown.
                   DRAINAGE AREA.--17.4 mi2.

                   PERIOD OF RECORD.--September 1966 to February 1972, February 1973 to current year.

                   GAGE.--Water-stage recorder. Elevation of gage is 20 ft (from topographic map).

                   REMARKS.--Records fair.
                   EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, unknown, probably exceeded 1300 ft3/s (possible backwater from
                         swamp), Sept. 5, 1987, gage height, 7.59 ft; maximum gage-height, 9.49 ft, Mar. 10, 1987 (caused by
                         backwater from Santee River).
                   STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 700 ft3/s and graphically extended                      on
                        logarithmic plotting paper.
                           FLOOD-FREQUENCY    DATA (ft3/s)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                          21 YEARS OF   RECORD                                    Mean                           =  2.399
                          LOG-PEARSON TYPE    III                                 Standard Deviation             -  0.386
                             Q2           260                                     Weighted Skew                 - -0.248
                             Q5           535
                             Q10          765
                             Q         1,100
                             Q  25     1,380
                             Q  510    11690
                                100


                                                                    Peak Stages and Discharges


                   Water     Date     Gage     Discharge       Water      Date     Gage     Discharge       Water      Date      Gage     Discharge
                                                               year               height                    year                 he
                   year              height        3                                             3                               (ight         3
                                       (ft)     (ft /s)                            (ft)       (ft /5)                             ft)       (ft /s)


                   1967    July  31    4.68        80          1977     Dec.  12     4.31       198         1987     Mar. 1       4.68      294
                   1968    Aug.  11    3.42        47          1978     May     9    4.45       232         1988     Sept.10      3.83       104
                   1969    Aug.   5    4.98        286         1979     Sept. 5      5.31       546
                   1970    Mar.  22    4.25        159         1980     Apr.  14     5.19       490
                   1971    Aug.  26    5.96        928         1981     Apr.    2    1.99        11

                   1972    Feb.   3    4.97        408         1982     June  19     5.15       473
                   1973    Apr.  10    5.86        856         1983     Mar.  25     5.84       840
                   1974    Feb.   8    4.69        297         1984     May     4    4.16       161
                   1975    Mar.  22    8.82        348         1985     Aug.  13     3.74        93
                   1976    July   8    3.98        127         1986     Nov.  22     5.20       492






































                                                                                  102










                                                                    SANTEE RIVER BASIN

                                               02172500 SOUTH FORK EDISTO RIVER NEAR MONTMORENCI, S.C.


              LOCATION.--Lat 33'3413511, long 81*30,5011, Aiken County, Hydrologic Unit 03050204, near center of span on
                    downstream side of bridge on State Highway 215, 0.4 mi upstream from Cedar Creek, 1 mi upstream from Shaw
                    Creek, and 7.6 mi northeast of Montmorenci.
              DRAINAGE AREA.--198 mi2.

              PERIOD OF RECORD.--October 1939 to September 1966; October 1971 to current year.

              GAGE.--Water-stage recorder prior to September 1966. Crest-stage gage thereafter. Datum of gage is 250.18 ft
                    National Geodetic Vertical Datum of 1929 (levels by Corps of Engineers). Prior to Oct. 29, 1954, wire-
                    weight gage at same site and datum.

              REMARKS.--Records good prior to June 30, 1955, and fair thereafter.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 5,010 ft         3/s, Aug. 31, 1964, gage height, 10.24 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 4,490 fts/s and graphically extended
                  on logarithmic plotting paper.
                     FLOOD-FREQUENCY DATA (fts    /S)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     44 YEARS OF RECORD                                      Mean                           =   3.193
                     LOG-PEARSON TYPE     III                                Standard Deviation             -   0.210
                        Q     =   1 570                                      Weighted Skew                 - -0.101
                          2   =     '350
                        Q5        2,
                        Q10   =   2,880
                        Q25   =   3,580
                              =   4,100
                        Q50       4,640
                        Q100  =


                                                               Peak Stages and Discharges


              Water     Date    Gage      Discharge       Water      Date     Gage     Discharge        Water      Date     Gage     Discharge
              year             height         3           year               height         a           year                height        3
                                 (ft)       (ft /s)                           (ft)       (ft /s)                            (ft)       (ft IS)


              1940    Aug.  15    8.81      2,460         1955     Apr.  16     8.16      1,790         1975     July 17     9.03      2,700
              1941    July  19    8.81      2,460         1956     Apr.  13     6.75        755         1976     June 29     7.92      1,550
              1942    Mar.  10    7.88      1,650         1957     May   14     6.90        750         1977     Dec. 19     8.53      2,120
              1943    Mar.  23    7.98      1,740         1958     Apr.  18     7.82      1,560         1978     Jan. 28     8.75      2,360
              1944    Mar.  24    8.71      2,370         1959     May   10     8.33      1,990         1979     Feb. 24     8.45      2,040

              1945    Apr.  27    6.97        898         1960     Oct.    1    9.57      3,120         1980     Mar. 13     8.18      1,780
              1946    Apr.  19    6.73        898         1961     Feb.  26     9.15      2,690         1981     Feb. 18     6.78         738
              1947    Oct.  10    7.47      1,320         1962     Feb.  24     8.83      2,540         1982     Jan.    6   7.98      1,600
              1948    Mar.   9    7.62      1,400         1963     Jan.  22     7.46      1,160         1983     Apr. 11     9.36      3,210
              1949    Aug.  30    8.52      2,180         1964     Aug.  31    10.24      5,010         1984     Feb. 29     7.50      1,190

              1950    Sept. 9     6.86        685         1965     Dec.  28     8.85      2,470         1985     Feb.    7   8.28      1,870
              1951    Apr. 5      6.71        615         1966     June  12     8.00      1,620         1986     Nov. 22     7.62      1,290
              1952    Mar.   6    8.21      2,040         1972     Jan.  14     8.20      1,780         1987     Mar.    1   7.25      1,020
              1953    May    8    7.62      1.400         1973     Feb.    2    7.73      1,380         1988     Sept. 9     6,79         744
              1954    Dec.  15    7.07        858         1974     Jan.    3    7.13        948




































                                                                             103










                                                                           EDISTO RIVER BASIN

                                                        02173000 SOUTH FORK EDISTO RIVER NEAR DENMARK, S.C.


                   LOCATION.--Lat 33'23'3511, long 81*08100", Orangeburg County, Hydrologic Unit 03050204, on left bank at
                         downstream side of bridge on U.S. Highway 321, 360 ft downstream from Seaboard Coast Line Railroad Bridge,
                        1.8 mi downstream from Little River, 4.8 mi north of Denmark, and at mile 136.6.
                   DRAINAGE AREA.--720 mi2.

                   PERIOD OF RECORD.--August 1931 to current year.

                   GAGE.--Continuous water-stage recorder prior to September 1971; crest-stage gage 1972 to 1980; continuous
                         recorder thereafter. Datum of gage is 155.68 ft National Geodetic Vertical Datum of 1929 (levels by Corps
                         of Engineers). Prior to Oct. 27, 1931, nonrecording gage at same site and datum.

                   REMARKS.--Records good.
                   EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 13,500 fts/s, Apr. 11, 1936, gage height, 10.91 ft.
                   EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum flood known since at le5st 1893, 11.7 ft in October 1929, on basis of
                         information from State Highway Department (discharge 17,100 ft /s, by convey anc e-s lope study).
                   STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 7,020 fts/s and extended on the basis of
                         velocity-area studies.
                          FLOOD-FREQUENCY DATA (ft3     /s)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                          56 YEARS OF RECORD                                       Mean                           -    3.425
                           LOG-PDNffTN_TY_PE   III                                 Standard Deviation             -    0.202
                              Q2   =   2,540                                       Weighted Skew                  .    0.581
                              Q5   =   31860
                              Q10  =   41920
                              Q25  -   6.520
                              Q50  -   7 920
                              Q100     9:490

                                                                     Peak Stages and Discharges


                   Water     Date     Gage     Discharge        Water     Date      Gage     Discharge        Water      Date      Gage     Discharge
                   year             height          3           year               height         3           year                 h7ight     (ft3/s)
                                      (ft)        (ft /s)                            (ft)      (ft /5)                              ft)


                   1930    Oct.  --   11.70       17,100        1951      Apr. 2      6.97      1,320         1971     Mar.   5     8.64      4,820
                   1932    Aug.  12    8.47       2,930         1952      Mar. 26     7.59      2,390         1972     Jan.  18     7.74      2,750
                   1933    Nov.    4   8.07       2,290         1953      Sept,29     7.56      2,500         1973     Feb.   3     8.01      3,270
                   1934    June    5   8.51       2,850         1954      Dec. 16     7.25      1,750         1974     Feb.  19     7.36      2,130
                   1935    Aug.  22    8.36       2,640         1955      Apr. 20     7.19      1,640         1975     July  19     8.08      3,420

                   1936    Apr.  11   10.91       13,500        1956      Feb.  8     6.91      1,350         1976     June  30     7.19      1,880
                   1937    Oct.  14    8.03       2,260         1957      Mar. 27     6.70      1,030         1977     Dec.  19     7.84      2,940
                   1938    Apr.  10    8.20       2,470         1958      Apr. 17     8.00      3,210         1978     Jan.  28     7.63      2,560
                   1939    Mar.    3   9.05       4,860         1959      May  14     7.70      2,810         1979     Feb.  24     8.03      3,310
                   1940    Aug.  19    7.92       2,060         1960      Apr.  6     8.75      5,150         1980

                   1941    July  22    7.91       2,060         1961      Apr. 17     8.22      3,780         1981     Feb.  18     6.98      1,560
                   1942    Dec.  26    8.06       2t840         1962      Feb. 27     7.80      3,110         1982     Jan.   6     7.41      2,200
                   1943    Mar.  24    7.62       2,080         1963      Jan. 22     7.67      2t710         1983     Apr.  13     7.80      2,870
                   1944    Mar.  25    8.24       3,220         1964      Sept. 2     9.41      7,350         1984     May    8     7.90      3,050
                   1945    Sept.19     8.32       3,310         1965      Oct. 20     8.18      3,610         1985     Feb.   8     7.68      2,850

                   1946    Jan.    1   7.40       1,740         1966      Mar.  5     8.28      3,820         1986     Nov.  23     6.84      2,000
                   1947    Aug. 15                2,040         1967      Aug. 28     7.91      3,070         1987     Jan.  24     7.73      2,650
                   1948    Feb.  14    8.38       4,010         1968      June 13     7.46      2,490         1988     Jan.  24     6.42         904
                   1949    Oct.    5   8.30       3,810         1969      Apr. 20     8.10      3,460
                   1950    Mar.    9   6.89       1,210         1970      Apr.  1     7.58      2,480





















                                                                                   104










                                                                     EDISTO RIVER BASIN

                                                  02173500 NORTH FORK EDISTO RIVER AT ORANGEBURG, S.C.


              LOCATION.--Lat 33*2910011, long 80*5212511, Orangeburg County, Hydrologic Unit 03050203, on left bank under
                    bridge on U.S. Highway 301 at Orangeburg, 0.5 mi upstream from Seaboard Coast Line Railroad bridge, 1.5 mi
                    downstream from Caw Caw Swamp and at mile 22.1.
              DRAINAGE AREA.--683 m12.

              REVISED RECORDS.--WSP 1032: Drainage area.

              PERIOD OF RECORD.--October 1938 to current year. Monthly discharge            only for some periods, published in WSP 1303.

              GAGE.--Water-stage recorder. Datum of gage is 149.02 ft National Geodetic Vertical Datum of 1929 (levels by
                    Corps of Engineers). Prior to Feb. 23, 1939, nonrecording gage at same site and datum.
              REMARKS.--  ,Records good. About 7.4 ft3/s, diverted by City of Orangeburg for municipal supply.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 9,500 ft3/s, Sept. 18, 1945, gage height, 14.28 ft.
              EXTREMES OUTSIDE PERIOD 0; RECORD.--Maximum flood known since at least 1893, 14.7 ft in September 1928,
                    discharge, 10,000 ft /a, from rating curve extended as described below, on basis of information from
                    Department of Public Utilities, City of Orangeburg.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 5,230 ft3/s and extended by velocity-area
                    studies.
                     FLOOD-FREQUENCY DATA (ft3/S)                             LOG-
                     51 YEARS OF RECORD                                       Mean                              3.422
                     LOG-PEARSON TYPE    III                                  Standard Deviation                0.199
                        QQ2   =  2,590                                        Weighted Skew                     0.277
                          5   =  31860
                        Q        4,820
                        Q'0      61150
                          25     7,240
                        Q50
                        Q100     8,420


                                                               Peak Stages and Discharges


              Water     Date     Gage    Discharge        Water      Date     Gage     Discharge       Water      Date      Gage     Discharge
              year              height        3           year                height                   year                height
                                 (ft)      (ft Is)                            (ft)      (ft3 /a)                            (ft)      (ft  3/s)


              1928    Sept.--    14.70      10,000        1955    Apr.   20    7.78      1,420         1972     Jan.    16   9.40     2,990
              1939    Mar.   3   9.98       3,910.        1956    Feb.   8     7.44      1,160         1973     June    13  10.01     3,730
              1940    Aug.   19  8.59       2,340         1957    June   17    7.62      1,250         1974     Aug,    11   8.14     1,880
              1941    June   29  11.00      5,210         1958    May    1     9.73      3,340         1975     July    21   8.94     2,530
              1942    Dec.   26  8.96       2t670         1959    May    14    8.80      2,570         1976     July    1    9.19     2,760

              1943    Mar.   24  8.20       1,930         1960    Apr.   6    10.36      4,240         1977     Dec.    17   9.02     2,600
              1944    Mar.   25  8.90       2,620         1961    Apr.   17    9.61      3,340         1978     Jan.    26   9.22     2,790
              1945    Sept.18    14.28      9,500         1962    Feb.   24    9.21      2,770         1979     Sept. 6     11.56     5,720
              1946    Jan. 1     7.90       1,670         1963    Jan.   22    9.26      2,880         1980     Mar.    31   9.23     2,800
              1947    Apr. 18    8.16       1,880         1964    Aug.   31   11.34      5,410         1981     Oct.    2    7.38     1,410

              1948    Sept. 7    10.25                    1965    Oct.   6    11.05      5,080         1982     Jan.    6    8.10     1,850
              1949    Aug. 29    10.47      4,560         1966    Mar.   6     9.79      3,450         1983     Apr.    13   9.04     2,610
              1950    Sept.10    8.03       1,800         1967    Aug.   29    9.00      2,570         1984     May     30  10.00     3,720
              1951    Apr. 10    7.50       1,370         1968    June   12    8.65      2,240         1985     Feb.    8    8.78     2,380
              1952    Mar. 25    8.54       2,410         1969    Apr.   21    8.60      2,200         1986     Nov.    23   8.23     1,940

              1953    Sept.29    8.43       2,160         1970    Apr.   2     8.71      2,300         1987     Jan.    24   8.88     2,470
              1954    Apr. 10    7.79       1,550         1971    Mar.   5    11.64      5,850         1988     Mar.    .13  6.50     1,050






















                                                                              105










                                                                           EDISTO RIVER BASIN

                                                            02174000 EDISTO RIVER NEAR BRANCHVILLE, S.C.


                    LOCATION.--Lat 33*10135", long 80*45'05", Bamberg County, Hydrologic Unit 03050205, on right bank 400 ft
                          downstream from bridge on U.S. Highway 21, 4.7 mi downstream from Brier Branch, 5.2 mi south of Branchville,
                          and at mile 100.0.
                    DRAINAGE AREA.--1,720 mi     2,  approximately.

                    PERIOD OF RECORD.--October 1945 to current year. Monthly discharge only for some periods, published in WSP 1303.

                    GAGE.--Water-stage recorder. Datum of gage is 80,02 ft National Geodetic Vertical Datum of 1929 (levels by Corps
                          of Engineers). Prior to May 19, 1949, at datum 1.00 ft higher.

                    REMARKS.--Records good.
                    EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 14,600 ft3/s, Sept. 3, 1964, gage height, 11.44 ft.
                    EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum flood known since at least 1893, 13.5 ft, @resent datum, in September
                          1928, on basis of information from State Highway Department, discharge, 25,700 ft /a, by conveyance-s lope
                          study.
                    STAGE-DISCHARGE RELATION.--Defined by current-meter measurements below 13,800 ft            31s and graphically extended
                         on logarithmic plotting paper.
                           FLOOD-FREQUENCY DATA (ft3    /s)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS1
                           44 YEARS OF RECORD                                      Mean                           -   3.768
                           LOG-PEARSON TYPE    III                                 Standard Deviation             -   0.210
                              Q     =  5,890                                       Weighted Skew                 = -0.057
                              Q 2   =  81820
                                5   = 10,900
                              Q10
                              Q     = 13.500
                              Q 25  = 15 600
                              Q50        I
                                100 = 17,700


                                                                     Peak Stages and Discharges


                    Water     Date    Gage     Discharge        Water      Date     Gage     Discharge       Water      Date      Gage      Discharge
                    year             height         3           year               height                    year                 height
                                      (ft)       (ft /s)                            (ft)      (ft 3/a)                            (ft)      (ft 3/a)


                    1928    Sept.--   14.50      25,700         1960    Apr. 8      10.93     12,600         1975     July 22      8.88     6,060
                    1946    Jan.    4  8.75       4,100         1961    Apr.  19      9.97      9,190        1976     June 30      9.08     6,460
                    1947    Apr.  18   8.23       4,870         1962    Mar.   3      9.04      6,490        1977     Dec. 20      8.73     5,760
                    1948    Apr.    4 10.95       9,140         1963    Jan.  26      8.97      6,490        1978     Jan, 28      9.64     7,750
                    1949    Oct.    6 11.21       10,000        1964    Sept. 3     11.44     14,600         1979     Sept. 8      9.81     8,210

                    1950    Mar.  12   6.22       2,540         1965    Oct.  19    10.57     10,700         1980     Mar.  16     9.62     7,730
                    1951    Apr.    3  7.36       3,640         1966    Mar. 8      10.06       8,910        1981     Feb.  22     6.95     3,200
                    1952    Mar.  29   8.47       5,350         1967    Sept. 1       7.69      4,260        1982     Jan.    9    8.14     4,700
                    1953    Mar.    3  8.27       4,950         1968    June  16      8.10      4,240        1983     Apr.  16     8.91     6,120
                    1954    Oct.    3  6.79       3,030         1969    May 21        8.86      5,630        1984     May     9    10.02    8,770

                    1955    Apr.  24   6.43       2,690         1970    Apr.   3      9.17      6,380        1985     Feb.  11     8.61     5,350
                    1956    Feb.  11              3,030         1971    Mar.   8    10.68     11,100         1986     Nov.  24     8.82     5,730
                    1957    Mar.  31   5.63       2,200         1972    Feb.   6      9.09      6,480        1987     Mar.    4    8.90     5,900
                    1958    Apr.  19              8,050         1973    June  17    10.12       9,120        1988     Mar.  17     5.62     2,150
                    1959    Mar.    9  8.36       5,150         1974    Feb.  20      8.57      5,440






























                                                                                   106









                                                                    EDISTO RIVER BASIN

                                                       02174250 COW CASTLE CREEK NEAR BOWMAN, S.C.


               LOCATION.--Lat 33*22'43", long 80*42'00", Orangeburg County, Hydrologic Unit 03050206, at bridge on county
                    road, 1.1 mi above Buck Branch and 3.2 mi northwest of Bowman.
               DRAINAGE AREA.--23.4 mi   2.

               PERIOD OF RECORD.--October 1970 to September 1980.

               GAGE.--Water-stage recorder. Elevation of gage is 125 ft (from topographic map).

               REMARKS.--Records good.
               EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 2,340 ft3/s probably occurred Sept. 4 or 5, 1979, gage height,
                    7.37 ft from recorded range in stage..
               STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 830 ft3/s and graphically extended on
                    logarithmic plotting paper.
                     FLOOD-FREQUENCY DATA (ft3     /a)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     10 YEARS OF RECORD                                       Mean                         -    2.557
                     LOG-PEARSON TYPE    III                                  Standard Deviation           -    0.338
                         Q2   =      436                                      Weighted Skew                =    0.307
                         Q5   =      8@61
                         Q    =   1,260
                         Q10  =   1,920
                         Q25  =   2,540
                          50  =   3,290
                         Q100


                                                                Peak Stages and Discharges


               Water     Date    Gage     Discharge       Water     Date      Gage      Discharge       Water     Date      Gage     Discharge
               year             height         3          year                height        3           year               height         3
                                 (ft)      (ft /a)                             (ft)      (ft /a)                             (ft)      (ft /a)


               1971   Mar. 4      6.36         466        1975     Feb. 20      5.76        267         1979     Sept. 4      7.37      2,340
               1972   Feb. 4      5.64         188        1976     July 7       5.87        292         1980     Mar. 13      6.34        493
               1973   June 12     6.83       1,290        1977     Mar. 22      5.92        306
               1974   Feb. 17     5.95         278        1978     Jan. 26      6.25        430


















































                                                                              107










                                                                         EDISTO RIVER BASIN

                                                             02175000 EDISTO RIVER NEAR GIVHANS, S.C.


                   LOCATION.--Lat 33*01'40", long 80*23'30", Dorchester County, Hydrologic Unit 03050205, an left bank at
                         downstream side of bridge on State Highway 61, 2.3 mi downstream from Four Hole Swamp, 2.8 mi west of
                         Givhans, and at mile 59.9,
                   DRAINAGE AREA.--2,730 m12, approximately.

                   PERIOD OF RECORD.--January 1939 to current year.

                   REVISED RECORDS.--WSP 1032: Drainage area. WSP 1303: 1939 (monthly and yearly runoff).

                   GAGE.--Water-stage recorder. Datum of gage is 20.46 ft National Geodetic Vertical Datum of 1929.
                   REMARKS. --Records good. About 112 ft3/s a day diverted above station for Charleston water supply during year.
                   EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 24,500 ft3/s, June 14, 1973, gage height, 15.84 ft.

                   EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage known since at least 1904, 17 5 ft in February 1925, from
                         investigation by Charleston Commissioners of Public Works, discharge, 24,960 ft3/s.
                   STAGE-DISCHARGE RELATION.--Defined by current-meter measurements below 24,500 ft3/s.
                           FLOOD&EOUENC11   DATA (ft3/s)
                           52 YEARS OF RECORD                                    Mean                          .    3.989
                           LOG-PEARSON TYPE   III                                Standard Deviation            -    0.231
                             02      10,100                                      Weighted Skew                - -0.397
                             Q 5     15,400
                             Q10     18,800
                                     22 900
                               25    25:900
                             050     28,700
                             0100

                                                                    Peak Stages and Discharges


                   Water     Date    Gage     Discharge       Water      Date     Gage     Discharge       Water      Date     Gage     Discharge
                   year             height                    year               height                    year               height
                                     (ft)       (ft3/5)                           (ft)        (ft3 /a)                           ft)      (ft3/s)


                   1904    Aug. --    17.00                   1954     Jan. 6        7.91      3,610       1974     Feb. 22      12.56     9,800
                   1919    July 31    14.00                   1955     Sept.16       8.81      4,540       1975     Feb. 26      12.52     9,690
                   1924    Sept.--    15.50                   1956     Feb.  14.     9.54      5,440       1976     July   a     12.63     9,980
                   1925    Feb. --    17.50     24,900        1957     May   21      7.89      3,610       1977     Dec.  19     12,06     8,610
                   1928    Sept.11    15.70     19,500        1958     Apr,  22      13.13    12,000       1978     Feb.   2     12.80    10,400

                   1939    Mar.    6  14.68     16,900        1959     Mar.   9      13.90    14,100       1979     Sept. 9      15.51    22,400
                   1940    Aug.  15   13.03     12,600        1960     Apr.  11      14.29    14,600       1980     Mar.  19     13.99    14,700
                   1941    July    5  12.64     10,800        1961     Apr.  20      14.05    14,100       1981     Feb.  26       7.61    3,030
                   1942    Dec.  30   13.48     13,100        1962     Mar.   6      12.41    10,200       1982     Jan.   9     11.46     7,490
                   1943    Mar.  30   11.32     8,010         1963     Jan.  29      11.80     8,060       1983     Mar.  22     13.84    14,000

                   1944    Mar.  30   13.44     13,100        1964     July  29      15.12    19,800       1984     May   12     13.92    14,300
                   1945    Sept.21    17.28     24,300        1965     Oct.  21      15.14    19,900       1985     Feb.  17       9.94    5,200
                   1946    Jan.  24   11.58     8,940         1966     Mar.  11      13.63    13,100       1986     Dec.  19     12.60     9,940
                   1947    Apr.  22   11.38     8,540         1967     Jan.  13      9.83      4,910       1987     Mar.   8     12.70    10,200
                   1948    Apr.    6  14.38     15,200        1968     June  20      10.07     5,250       1988     Sept.18        7.78    3,150

                   1949    Dec.    3  14.62     15,800        1969     May   26      12.93    10,800
                   1950    Sep.  12     8.66    4,090         1970     Apr.   6      13.07    11,200
                   1951    Apr.    9    9.21    4,790         1971     Mar.  11      13.90    14,200
                   1952    Apr.    2  11.27     7,950         1972     Feb.   7      13.10    11,300
                   1953    Mar.    7  12.26     10,400        1973     June  14      15.84    24,500

























                                                                                 108










                                                                   COMBAHEE RIVER BASIN

                                                      02175450 SAVANNAH CREEK NEAR EHRHARDT, S.C.


              LOCATION.--Lat 33*02'03'', long 81*03'11", Colleton county, Hydrologic Unit 03050207, on upstream side of
                    culvert on State Highway 641, 1.2 mi upstream from Salkshatchie River, and 6.0 mi north of Miley.
              DRAINAGE AREA.--12.4 mi2.

              PERIOD OF RECORD.--December 1974 to current year.

              GAGE.--Dual digital water-stage and rainf      all recorders, September 1967 to October 1974. Partial record crest
                    &age from December 1974 to current year.

              REMARKS.--Records good.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 895 ft3/s, March 13, 1980, gage height, 8.30 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-motor measurements below 211 ft3/s and graphically extended on
                    logarithmic plotting paper.
                      FLOOD-FREQUENCY DATA (ft3/s)                           LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                      12 YEARS OF  RECORD                                    Mean                           -   2.472
                      LOG-PEARSON  TYPE III                                  Standard Deviation             =  0.213
                        Q2         291                                       Weighted Skew                  =   0.221
                        Q5         445
                        Q          561
                        Q 10       79-4
                        Q 25       858
                          50      1,000
                        Q100


                                                               Peak Stages and Discharges


              Water     Date    Gage      Discharge       Water     Date      Gage     Discharge        Water     Date      Gage     Discharge
              year              height                    year               height                     year                height
                                  ft)      (ft3/.)                            (ft)        (ft 3/s)                          (ft)       (ft3 /a)


              1977    June 20     6.53        324         1981     Oct. 1      5.86         230         1985     Feb. 7      5.29        160
              1978    Jan. 25     6.69        347         1982     Jan. 5      5.38         170         1986     Dec. 14     7.12        400
              1979    Apr. 26     6.80        362         1983     Feb. 17     5.89         236         1987     Mar. 1      6.58        333
              1980    Mar. 13     8.30        895         1984     May 13      7.04         395         1988     Sept.12     5.33        164

















































                                                                             @109











                                                                       COMBAHEE RIVER BASIN

                                                          02175500 SALKEHATCHIE RIVER NEAR MILEY, S.C.


                   LOCATION.--Lat 32*59'20", long 81*03'10", Hampton County, Hydrologic Unit 03050207, on right bank 90 ft
                        downstream from bridge on U.S. Highway 601, 2.4 mi downstream from Savannah Creek, 3.1 mi upstream from
                        Hampton and Branchville Railroad bridge, 3.1 mi northwest of Miley, and at mile 68.0.
                   DRAINAGE AREA.--341 m12.

                   PERIOD OF RECORD.--February 1951 to current year.

                   GAGE.--Water-stage recorder. Datum of gage is 64.35 ft National Geodetic Vertical Datum of 1929. Dec. 6, 1957
                        to Jan. 22, 1971, nonrecording gage at same site and datum. Prior to Dec. 6, 1957, nonrecording gage at
                        bridge 90 ft upstream at same datum.

                   REMARKS.--Records good.
                   EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 3,300 fts/s, Mar. 13, 1980, gage height, 5.44 ft
                   STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 2,010 fts/s and graphically extended
                      on logarithmic plotting paper.
                         FLOOD-FREQUENCY DATA (ft3    /s)                       LOG-PEARSON TYPE III STATI@TICS (JL70G UNITS)
                         38 YEARS OF RECORD                                     Mean                             3. 2
                         LOG-PEARSON TYPE    III                                Standard Deviation           =    0.183
                             Q2   -   1.490                                     Weighted Skew               = -0.059
                             Q5   =   2,120
                             Q20  =   2 550
                             Q25  -   3:080
                             Q    =   3,490
                               50 =   3,890
                             Q100

                                                                  Peak Stages and Discharges


                   Water    Date    Gage     Discharge       Water      Date     Gage     Discharge       Water    Date      Gage     Discharge
                                                             year               height                    year               he
                   year            height         3                                           3                               (ight
                                     (ft)      (ft /a)                           (ft)      (ft /s)                            ft )     (ft3/8)


                   1951   Apr. 2      3.92        774        1966     Mar.  6     5.00      2,200         1981    Oct.   2    3.88          771
                   1952   Mar. 28     4.02        905        1967     Mar. 13     4.60      1,740         1982    Jan.   5    4.27      1,110
                   1953   Sept.30     4.04        950        1968     June 13     4.32      1,340         1983    Feb.   17   4.19      1,140
                   1954   May   15    3.87        860        1969     May  20     4.90      2,200         1984    May    9    4.90      2,200
                   1955   Apr.  15    4.02        950        1970     Apr.  2     4.57      1,700         1985    Feb.   9    4.07          985

                   1956   May    6    3.99        774        1971     Mar.  4     4.48      1,570         1986    Dec.   14   5.35      2,850
                   1957   Mar.  26    3.68        732        1972     Feb.  4               2,000         1987    Mar.   2    4.77      1,840
                   1958   Apr.  17    4.21      1,140        1973     June 20     4.93      2,240         1988    Sept.12     4.19      1,070
                   1959   Mar.   7    4.61      1,600        1974     Feb. 18     4.53      1,650
                   1960   Apr.   6    4.94      1,880        1975     July 20     5.00      2,350

                   1961   Apr.  17    4.48      1,390        1976     July  7     4.83      2,100
                   1962   Mar.  15    4.33      1,200        1977     Mar. 24     4.34      1,480
                   1963   Jan.  23    4.24      1,100        1978     Jan. 28     4.63      1,800
                   1964   Sept. 2     4.99      2,340        1979.    Sept, 6     5.34      3,050
                   1965   Oct.  17    5.06      2,230        1980     Mar. 13     5.44      3,300

































                                                                                110










                                                                   COMBAHEE RIVER BASIN

                                                       02176000 COMBAHEE RIVER NEAR YEMASSEE, S.C.


               LOCATION.--Lat 32'42'25", long 80*4913511, Hampton County, Hydrologic Unit 03050208, near left bank on
                    downstream side of pile bent on bridge on U.S. Highway 17A, 0.2 mi upstream from Atlantic Coast Line
                    Railroad bridge, 1.8 mi northeast of Yemassee, and 5 mi downstream from Black Creek.
               DRAINAGE AREA.--1,100 m12.

               PERIOD OF RECORD.--October 1952 to September 1966.

               GAGE.--Recording prior to June 30, 1957; crest-stage gage thereafter. Datum of gage is at National Geodetic
                    Vertical Datum of 1929.
               EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 11,700 ft         3/s July 22, 1964, gage height 10.87 ft.
               STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 3,910 fts/s and extended on the basis of
                    velocity-area studies.
                     FLOOD-FREQUENCY DATA (ft3     /s)                       LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     15 YEARS OF RECORD                                      Mean                           .   3.744
                     LOG-PEARSON TYPE     III                                Standard Deviation             -   0.225
                         Q2       6,050                                      Weighted Skew                 - -0.223
                         Q5       91230
                         Q10     11,400
                         Q25     14 100
                         Q50     16:200
                         Q100    18,200


                                                                Peak Stages and Discharges


               Water    Date     Gage     Discharge       Water     Date       Gage     Discharge       Water     Date       Gage    Discharge
               year             hzight     (ft3/s)        year               height                     year                height
                                  ft)                                          (ft)      (ft3 /a)                            (ft)      (ft3/a)


               1952   Feb. 19     7.51       3,530        1957     June    6     6.71     2,150         1962     Mar. 17      8.50       5,630
               1953   Mar. 8      7.32       3,110        1958     Apr.   19     9.22     7,930         1963     Jan. 25      8.39       5,410
               1954   May 18      7.51       3,530        1959     Mar.    7   10.16      9,850         1964     July 22     10.87     11,700
               1955   Apr. 18     8.18       5,330        1960     Nov.    2   10.80      11,400        1965     Oct. 16     10.62     10,900
               1956   Feb. 10     7.96       4,680        1961     Apr.   20     9.22     7,350         1966     Mar. 8       9.29       7,600










                                                                          BROAD RIVER BASIN

                                                          02176500 COOSAWRATCHIE RIVER NEAR HAMPTON, SC


                   LOCATION.--Lat 32*5011011, long 81*0715511, Hampton County, Hydrologic Unit 03050208, near left bank on
                         downstream side of bridge on U.S. Highway 601, 1.6 mi downstream from Black Creek, 2.5 mi southwest of
                         Hampton, and at mile 33.6.
                   DRAINAGE AREA.--203 m12.

                   PERIOD OF RECORD.--February 1951 to current year.

                   GAGE.--Water-stage recorder. Datum of gage is 50.30 ft above National Geodetic Vertical Datum of 1929. Prior to
                         Oct. 26, 1954, nonrecording gage at same site and datum.

                   REMARKS.--Records good.
                   EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 8,160 ft3/s, Sept. 2, 1969, gage height, 8.39 ft, from
                         floodmarks.
                   STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 6,300 fts/s and graphically extended
                        on logarithmic plotting paper.
                          FLOOD-FREQUENCY DATA.(ftl/s)                            LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                          38 YEARS OF RECORD                                      Mean                           -   3.229
                          LOG-PEARSON TYPE     III                                Standard Deviation             -   0.246
                             Q2    =   1,680                                      Weighted Skew                  -   0.067
                             Q  5  =   21720
                             Q10   =   31510
                             Q25   =   4,620
                             Q     =   5 530
                                50 -   6:500
                             Q100


                                                                    Peak Stages and Discharges


                   Water     Date    Gage      Discharge       Water      Date     Gage     Discharge        Water     Date      Gage     Discharge
                                                                                                             year                height
                   year             height         3           year               height         3                                           (ft3/s)
                                      (ft)      (ft /s)                             (ft)      (ft /s)                             ft)


                   1951    Apr.   1    4.82      1,220         1966     Mar. 5       5.65      2,370         1981      Apr.    3  4.09          585
                   1952    Feb.  16    5.20      1,780         1967     Aug.  12     4.53        974         1982      July  18   4.55          989
                   1953    Mar.  24    5.78      2,750         1968     June   9     3.89        416         1983      Mar.    8  5.18       1,620
                   1954    May   16    5.45      2,360         1969     Sept. 2      8.39      8,160         1984      July  31   4.84       1,190
                   1955    Apr.  15    5.05      1,430         1970     Mar.  31     5.66      2,120         1985      Aug.  31   4.65       1,000

                   1956    Feb.   7    4.98      1,390         1971     Mar.   4     5.16      1,530         1986      Nov.  23   5.80       2,440
                   1957    May   31    4.26         649        1972     Feb.   4     5.23      1,660         1987      Mar.    2  5.50       2,030
                   1958    Apr.  16    5.07      1,400         1973     June  14     5.47      1,940         1988      Sept.10    4.85       1,200
                   1959    Mar.   6    5.87      2,950         1974     Feb.   9     5.11      1,520
                   1960    Jan.  31    5.48      2,150         1975     July  19     5.61      2,150

                   1961    Apr.  17    5.16      1,580         1976     July   7     5.29      1,760
                   1962    Mar.  12              1,250         1977     Mar.   8     4.57      1,030
                   1963    Jan.  29    5.61      2,190         1978     Jan.  27     5.03      1,460
                   1964    Aug.  30    6.21      3,720         1979     Sept, 6      5.66      2,210
                   1965    Oct.  16    6.27      3,880         1980     Mar.  14     7.09      4,800































                                                                                  112










                                                                   SAVANNAH RIVEP BASIN

                                                       02184500 WHITEWATER RIVER AT JOCASSEE, S.C.


              LOCATION.--Lat 34*58'19", long 82'56124", Oconee County, Hydrologic Unit 03060101, on right bank at highway
                    bridge at Jocassee, 0.8 mi upstream from confluence with Toxaway River.
              DRAINAGE AREA.--47.3 m12.

              PERIOD OF RECORD.--January 1951 to April 1958.

              GAGE.--Water-stage recorder. Datum of gage is 777.79 ft National Geodetic Vertical Datum of 1929.

              REMARKS.--Records fair.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 6,900 ft3/s, Oct. 4, 1964, gage height, 14.30 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 1,540 ft3/s and extended an the basis of
                    indirect computations of peak discharge using the width contraction method.
                     FLOOD-FREQUENCY DATA (ft31s)                             LOG-PEARSON TYPE III STATISTICS (LOG UNITS1
                     16 YEARS OF RECORD                                       Mean                          =   3,505
                     LOG-PEARSON TYPE     III                                 Standard Deviation            =   0.180
                         Q2   =   31120                                       Weighted Skew                 -   0.343
                         Q5   =   41490
                         Q    -   5 510
                         Q10      6:920
                         Q25      8 060
                          50      9:290
                         Q100


                                                                Peak Stages   and Discharges


              Water     Date      Gage    Discharge       Water     Date      Gage      Discharge       Water     Date       Gage     Discharge
              year             height                     year                height                    year                height
                                  (ft)      (ft3 /5)                           (ft)       (ft3/3)                            (ft)       (ft3/s)


              1952    Mar.'11     11.17     5,280         1957      Apr.    4   6.31      2,710         1962     Dec. 12      7.00      3,100
              1953    Feb. 21     6.53      2,820         1958      Dec.   20             2,410         1963     Mar. 6       5.78      2,370
              1954    Jan. 22     6.38      2,730         1959      May    31             1,990         1964     Sept.29     12.48      5,990
              1955    Feb. 6                2.260         1960      Oct.    9             2,340         1965     Oct. 4      14.30      6,900
              1956    Apr. 15     5.10      1,950         1961      Feb.   25   6.65      2,890         1966     Oct. 1      11.20      5,350

                                                                                                        1967     June 4       9.76      4,630















































                                                                              113









                                                                         SAVANNAH RIVER BASIN

                                                             02185000 KEOWEE RIVER NEAR JOCASSEE, S.C.


                    LOCATION.--Lat 34*57121", long 82*54141", Oconee County, Hydrologic Unit 03060101, on right bank 0.6 mi
                         downstream from bridge on State Highway 11, 1.8 mi southeast of Jocassee, and 2.6 mi upstream from Eastatoe
                         Creek.
                    DRAINAGE AREA.--148 m12.

                    PERIOD OF RECORD.--December 1949 to April 1968.

                    GAGE.--Water-stage recorder. Datum of gage is 737.43 ft National Geodetic Vertical Datum of 1929.

                    REMARKS.--Records good.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 21,000 ft3/s, Oct. 4, 1964, gage height, 22.03 ft.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 8,480 ft3/s and extended on the basis of
                         indirect computations of peak discharge using the slope-area method.
                          FLOOD-FREQUENCY DATA (ft3/5)                             LOG-PEARSON-TYPE III STATISTICS (LOG UNITS)
                           18 YEARS OF RECORD                                      Mean                          -   3.984
                          EO-G-PEARSON TYPE    III                                 Standard Deviation            -   0.182
                              Q2    =  9,500                                       Weighted Skew                 =   0.215
                              Q 5   = 13,700
                              Ql    - 16,700
                              Q25   = 20,700
                              Q50   = 24 000
                              Q100  = 27:400

                                                                     Peak Stages and Discharges


                    Water     Date    Gage     Discharge       Water     Date       Gage     Discharge       Water     Date      Gage      Discharge
                                                               year                height                    year               height
                    year             height         3                                            3                                             3
                                      (ft)      (ft /s)                             (ft)      (ft /5)                               ft)     (ft /s)


                    1950    Sept. 1   11.46      11,800        1956      Apr. 16     6.74      5,780         1962     Dec. 12       10.45   10,400
                    1951    Dec.   7   8.29      7,700         1957      Apr.   4    9.03      8,540         1963     Mar. 6                  6,620
                    1952    Mar. 11   16.23      16,200        1958      Dec. 20     7.08      6.260         1964     Sept.29       17.84   17,700
                    1953    Feb. 21   10.03      9,840         1959      Apr. 12     6.85      5,900         1965     Oct. 4        22.03   21,000
                    1954    Jan. 22    9.49      9,190         1960      Feb.   5    6.52      5,540         1966     Mar. 13       16.07   16,100

                    1955    Feb.   6   7.77      7,100         1961      Feb. 25     9.67      9,450         1967     June 4        14,12   14,100











































                                                                                   114










                                                                   SAVANNAH RIVER BASIN

                                                       02185200 LITTLE RIVER HEAR WALHALLA, S.C.


             LOCATION.--Lat 34*50111", long 82*58'4811, Oconee County, Hydrologic Unit 03060101, at downstream side of bridge
                   on State Road 24, 0.5 mi downstream from Oconee Creek, 3.5 mi south of Salem and 6.5 mi northeast of
                    Walhalla.
             DRAINAGE AREA.--72.0 m12.

             PERIOD OF RECORD.--March 1967 to current year.

             GAGE.--Water-stage recorder. Datum of gage is 807.63 ft National Geodetic Vertical Datum of 1929.

             REMARKS.--Records good.
             EXTREMES FOR PERIOD OF RECORD.--- Maximum discharge, 12.800 ft3/s, June 4, 1967, gage height, 12.29 ft.
             STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 3,050 ft3js and graphically extended
                 on logarithmic plotting paper.
                    FLOOD-FREOUENCY DATA (ft3/s)                            LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                    21 YEARS OF RECORD                                      Mean                           -    3.560
                    LOG-PEARSON TYPE    III                                 Standard Deviation             -    0.322
                        Q2   =   3,640                                      Weighted Skew                 - -0.033
                        Q    -   61790
                          5  =   91370
                        Q10      13.200
                        Q2'  :   16,400
                        Q50  =   20,000
                        Q100

                                                               Peak Stages and Discharges


             Water     Date      Gage    Discharge       Water      Date     Gage      Discharge       Water     Date      Gage     Discharge
             year             height                     year               height                     year               height
                                 (ft)     (ft 3 /s)                           (ft)       (ft3/s)                            (ft)      (ft3/s)


             1967                12.29      12,800       1977     Mar.  30     7.55      5,700         1987      Nov. 26      7.97     5,890
             1968                6.29       4,400        1978     Jan.  25     6.66      4,450         1988      Jan. 20      4.08     1,660
             1969    Aug.  22    5.42       3,340        1979     June    8    7.93      5,400
             1970    Nov.   1    3.38       1,260        1980     Nov.    2    7.22      4,750
             1971    Jan.   5    3.37       1,260        1981     Mar.  30     2.96        860

             1972    Dec.   7    5.73       3,300        1982     Feb.    3    6.31      3,750
             1973    May   28    11.39      12,300       1983     May   20     4.19      1,750
             1974    Dec.  26    4.56       2,050        1984
             1975    Mar.  14    6.45       4,160        1985     Aug. 17      5.90      3,400
             1976    May   29    10.30      10,100       1986     Nov. 1       6.43










































                                                                            115










                                                                       SAVANNAH RIVER BASIN

                                                             02185500 SENECA RIVER NEAR NEWRY, S.C.


                    LOCATION.--Lat 34'4410911, long 82*5211911, Oconee County, Hydrologic Unit 03060101, on left bank 800 ft
                         downstream from Lawrence Bridge, 0.7 mi upstream from Sixmilo Creek, and 2.2 mi east of Newry.
                    DRAINAGE AREA.--455 m12.

                    PERIOD OF RECORD.--October 1939 to June 1961. Prior to October 1960, published as Keowee River near Newry.

                    GAGE.--Water-stage recorder. Datum of gage is 625.00 ft National Geodetic Vertical Datum of 1929.

                    REMARKS.--Records good prior to Apr. 22, 1961 fair thereafter. Some regulation at low flow by powerplant above
                         station. Stage-discharge relation affected by backwater from construction of Hartwell Reservoir subsequent
                         to Apr. 21.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 25,200 ft3/s, Aug. 13, 1940; may'rm            gage height, 24.60 ft.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 19,300 ft3/s and graphically extended
                        on logarithmic plotting paper.
                          FLOOD-FREQUENCY DATA (ft3/s)                           LOG-PEARSON TYPE III STATISTICS CLOG UNITS)
                          22 YEARS OF RECORD                                     Mean                           -  4.215
                          LOG-PEARSON TYPE III                                   Standard Deviation             -  0.105
                             Q2    -   16,600                                    Weighted Skew                 - -0.247
                             Q     =   20,100
                             Q5    -   22,200
                                10
                             Q215  '   24,500
                             Q50       26,000
                             Q100  =   27,500

                                                                    Peak Stages and Discharges


                    Water    Date    Gage     Discharge       Water      Date       Gage   Discharge       Water     Date       Gage     Discharge
                    year            height                    year               height                    year               height         3
                                      (ft)      (ft3/s)                             (ft)      (ft3ls)                           (ft)      (ft /6)


                    1940   Aug.  13    24.60    25,200        1950     Oct.   7     22.69     21,100       1960     Mar. 30 15.92         13,300
                    1941   July   7    13.27    10,400        1951     Dec.   7     15.97     13,000       1961     June 22     20.94     20,200
                    1942   Feb.  17    20.28    18,900        1952     Mar.  11     23.16     22,000
                    1943   Dec.  29             17plOO        1953     Feb.  21     18.89     26,300
                    1944   Mar.  20    17.01    14,900        1954     Jan.  22               19,700

                    1945   Feb.  22      8.25     5,530       1955     Feb.   6               17,500
                    1946   Jan.   7    21.32    20,300        1956     Apr.  16     17.32     14,900
                    1947   Jan.  20    16.26    13,900        1957     Apr.   5     20.32     18,300
                    1948   Aug.   4    19.09    17,500        1958     Nov.  19     13.72     10,800
                    1949   Nov.  29    20.54    19,000        1959     Apr.  12     17.-Ol    14,400



































                                                                                 116










                                                                    SAVANNAH RIVER BASIN

                                                     02186000 TWELVEMILE CREEK NEAR LIBERTY, S.C.


              LOCATION.--Lat 34*4810511, long 82*44,5511, Pickens County, Hydrologic Unit 03060101, on left bank 40 ft
                   downstream from State highway bridge, 0.8 mi downstream from Rices Creek, and 3.4 mi west of Liberty.
              DRAINAGE.--106 m12.

              PERIOD OF RECORD.--July 1954 to September 1964.

              GAGE.--Water-stage recorder. Datum of gage is 822.18 ft National Geodetic Vertical Datum of 1929 (levels by Soil
                   Conservation Service).

              REMARKS.--Records good except those for periods of no gage-height record, which are fair. Storm runoff at gage
                   affected by several small flood-detention reservoirs on tributary streams.
              EXTREMES FOR PERIOD OF RECORD.--Maxilm discharge, 5,360 ft3/s, Dec. 12, 1961, gage height, 12.23 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 4,020 ft3/s and graphically extended
                 on logarithmic plotting paper.
                    FLOOD-FREQUENCY DATA (ft3/5)                             LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     10 YEARS OF RECORD                                      Mean                          -   3.507
                     LOG-PEARSON TYPE   III                                  Standard Deviation            .   0.125
                        Q     =  3 180                                       Weighted Skew                 =   0.272
                        Q     =  4:080
                        Q10   w  4,680
                          25  =  5 460
                        Q50   .  6:050
                        Q100  =  6,640


                                                               Peak Stages and Discharges


              Water     Date    Gage     Discharge       Water      Date      Gage     Discharge       Water     Date        Gage    Discharge
              year             height         3          year                height         3           year              height
                                 ft)       (ft /5)                            (ft)       (ft /5)                             (ft)     (ft 3/a)


              1955    Feb. 7     9.60        2,880       1959       June 1      9.30     2,710          1963    Mar. 6 11.38           4,680
              1956    Apr. 16    9.37        2,760       1960       Mar. 31     8.71     2,490          1964    Jan. 25      9.59      3,300
              1957    Apr. 5     9.80        2,930       1961       June 22   10.81      4,040
              1958    July 9     6.56        1,380       1962       Dec. 12   12.23      5,360














































                                                                             117










                                                                         SAVANNAH RIVER BASIN

                                                             02187000 SENECA RIVER NEAR ANDERSON, S.C.


                    LOCATION.--Lat 34*29'10", long 82'49'45", Anderson County, Hydrologic-Unit 03060101, long 82*49'45", on right
                          bank, 0.25 mi downstream from bridge on S:tate Highway 80, 1.9 mi downstream from Deep Creek, 4.2 mi upstream
                          from confluence with Tugaloo River, and 10 mi west of Anderson.
                    DRAINAGE AREA.--1026 m12.

                    PERIOD OF RECORD.--June 1928 to January 1960. Monthly discharge only for some periods published in WSP 1303.

                    GAGE.--Water-stage recorder. Elevation of gage is 520 ft (from Corps of Engineers profile). May 28, 1928, to
                          January 23, 1929, staff gage and January 24, 1929, to October 12, 1933, water-stage recorder, at site 15 ft
                          downstream at same datum.

                    REMARKS.--Records good. Some regulation at low flow by powerplants above station.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 81,100 ft3/s, Aug. 17, 1928, gage height, 25.75 ft.
                    EXTREMES OUTSIDE PERIOD OF RECORD.--At least 90,200 ft3ls, Feb. 15, 1960, gage height 25.72 ft, from current-
                          meter measurement.
                    STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 18,000 fts/s and graphically extended an
                          logarithmic plotting paper.
                           FLOOD-FREQUENCY DATA (ft3/s)                            LOG-PEARSON TYPE III STATISTICS CLOG UNITS)
                           32 YEARS OF RECORD                                      Mean                           .   4.368
                           LOG-PEARSON TYPE III                                    Standard Deviation             -   0.221
                              Q  2  =   23t100                                     Weighted Skew                  =   0.113
                              Q5    =   35,700
                              Q     =   45,000
                              Q25   '   58,000
                              950   =   68 400
                              Q100  =   79:50b

                                                                     Peak Stages and Discharges


                    Water     Date     Gage     Discharge       Water      Date     Gage     Discharge       Water       Date     Gage     Discharge
                    year             height         3           year               height         3          year                height         3
                                       (ft)       (ft /s)                           (ft)       (ft /a)                            (ft)       (ft /a)


                    1928    Aug.  17   25.75      81,100        1939     Aug. 19      15.68    33 300        1950     Oct.    8    13.51      24,300
                    1929    Mar.    5  14.72      25,900        1940     Aug, 14      18.30    45:600        1951     Oct.  21     10.31      13,900
                    1930    Oct.    2  13.90      23,100        1941     July    7    10.13    13,300        1952     Mar.  12     15.37      32,000
                    1931    Nov.  17    8.20      7,800         1942     Feb@ 17      15.25    31,100        1953     Feb.  22     13.21      23,200
                    1932    Dec.  15   12.14      17,500        1943     Dec, 30      12.54    20,800        1954     Jan.  23     13.26      23,600

                    1933    Oct.  18   17.73      37,600        1944     Mar, 20      13.05    22,600        1955     Feb.    7    11.74      18,400
                    1934    Mar.    5  12.16      19,800        1945     Mar. 27      8.30       8,850       1956     Apr.  17     11.69      18,000
                    1935    Jan.  20   12.24      19,800        1946     Jan,    7    17.26    40,600        1957     Apr.    6    12.89      22,200
                    1936    Apr.    7  19.04      49,200        1947     Jan. 21      11.76    18,400        1958     Nov.  20       9.88     12,800
                    1937    Oct.    1  20.07      55,200        1948     Aug.    5    10.84    15,300        1959     Apr.  13     11.00      15,300

                    1938    Oct.  20   14.42      27,900        1949     Nov. 29      15.11    30,700

































                                                                                   118










                                                                    SAVANNAH RIVER BASIN

                                                           02187500 SAVANNAH RIVER NEAR IVA, SC

               LOCATION.--Lat 34*15'20", Anderson County, Hydrologic Unit 03060103, on left bank at downstream side of bridge on
                     State Highway 184, 0.5 mi upstream from Little Generostee Creek, 5.8 mi southwest of Iva, and at mile 296.5.
               DRAINAGE AREA.--2,231 mi    2.

               PERIOD OF RECORD.--October 1949 to September 1981. Monthly discharge only for some periods, published in WSP
                     1303.

               GAGE.--Water-stage recorder. Datum of gage is 432.26 ft National Geodetic Vertical Datum of 1929 (levels by
                    Corps of Engineers).

               REMARKS.--Records good. Flow regulated by powerplants above station, by Burton and Mathis Reservoirs, and by
                     Hartwell Lake. Currently in backwater from Richard B. Russell Dam.
                                                                                    3
               EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 54,400 ft /s, Mar. 12,1952, gage height, 12.74 ft.
                                                                                                           3
               STAGE-DISCHARGE RELATION.--Defined by current meter measurements below 52,300 ft and graphically extended on
                     logarithmic plotting paper.

                                                                Peak Stages and Discharges


               Water    Date     Gage      Discharge       Water     Date      Gage     Discharge        Water     Date      Gage     Discharge
               year             height         3           year               height         3           year                height         3
                                  (ft)      (ft IS)                            (ft)       (ft /a)                            (ft)           /a)


               1950     Oct.  10    ---      27,500        1960      Apr.   6     6.16    12,300         1970      July 29    8.51       28,600
               1951     Oct.  21    8.98     -27,200       1961      Mar.   7     5.79    10,400         1971      Mar. 3     8.96       31,300
               1952     Mar.  12    12.74    54,400        1962      Dec.   18    7.89    21,200         1972      Jan.-7     8.43       31,000
               1953     Feb.  22    10.44    36,800        1963      Apr.   30    7.86    21,400         1973      Dec.  15   8.57       32,000
               1954     Jan.  16    11.28    44,200        1964      Apr.   8    11.25    44,300         1974      Aug.  9    8.01       28,100

               1955     Feb.    7   10.04    34,000        1965      Oct.   5     8.87    29,500         1975      Mar.  13   8.82       33,700
               1956     Apr.  16    9.65     31,200        1966      Mar.   4     9.79    35,000         1976      Mar.  31   8.23       29,600
               1957     Apr.    6   10.08    34,800        1967      June   6     8.88    30,800         1977      Mar.  30   8.12       28,800
               1958     Nov.  19    9.67     32,000        1968      Jan.   12    8.58    29,000         1978      Jan.  25   8.47       31,300
               1959     Apr.  13    8.22     22,000        1969      May    2     8.44    28,100         1979      Apr.  13   8.73       33,300

                                                                                                         1980      Mar.  28   8.36       30,500
                                                                                                         1981      July  24   7.99       27,800










                                                                        SAVANNAH RIVER BASIN

                                                           02187900 BROADWAY CREEK NEAR ANDERSON, S.C.


                   LOCATION.--Lat 34'30'09", long 82'3510011, Anderson County, Hydrologic Unit 03060103, at bridge on State Highway
                         48, 0.1 mi downstream from Cupboard Creek, and 3.8 mi east of Anderson.
                   DRAINAGE AREA.--26.4 m12.

                   PERIOD OF RECORD.--October 1974 to current year.

                   GAGE.--Partial record crest gage, Elevation of gage is 660 ft (from topographic maps).

                   REMARKS.--Records good.
                   EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,700 ft3/s, March 30, 1977, gage height, 11.80 ft.
                   STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 1,600 fts/s and graphically extended on
                         logarithmic plotting paper.
                          FLOOD-FREQUENCY DATA.(ftS    IS)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                          10 YEARS OF RECORD                                      Mean                           -  2,970
                          LOG-PEARSON TYPE    III                                 Standard Deviation             -  0.244
                             Q2    -      954                                     Weighted Skew                 - -0.226
                             Q5    =   11500
                             Q10   =   11890
                             Q25   =   21390
                             Q     =   2 770
                              50   =   3:150
                             Q100

                                                                    Peak Stages and Discharges


                   Water     Date     Gage    Discharge        Water     Date      Gage     Discharge       Water      Date      Gage     Discharge
                   year             height                     year               height                    year                height         3
                                      (ft)       (ft3/s)                           (ft)        (ft3/a)                           (ft)       (ft ts)


                   1977    Mar. 30    11.80      1,700         1982     Jan. 4      10.30       1,400       1987     Mar. 1       9.42       1,220
                   1978    Jan. 25    10.18      1,380         1984     Feb. 14      9.82       1,300       1988     Apr. 12      4.36         361
                   1979    Apr. 13    11.16      1,570         1985     Feb. 6       5.80        560
                   1981    Feb. 10     5.53         520        1986     Nov. 1       5.98        587





















































                                                                                  120










                                                                   SAVANNAH RIVER BASIN

                                                      02188000 ROCKY RIVER NEAR CALHOUN FALLS. S.C.


               LOCATION.--Lat 34*08', long 82*381, Abbeville County, Hydrologic Unit 03060103, on right bank, 2,000 ft upstream
                    from Swanigan Mill bridge on county road, 3.2 mi northwest of Calhoun Falls, and 3.8 mi upstream from mouth.
               DRAINAGE AREA.--267 m12.

               PERIOD OF RECORD.--February 1950 to September 1966, crest-stage 1971-82.

               GAGE.--Digital water-stage recorder. Datum of &age is 403.04 ft National Geodetic Vertical Datum of 1929 (levels
                    by Corps of Engineers). Prior to Aug. 13, 1964, graphic water-stage recorder at same site and datum.

               REMARKS.--Records good. Flow regulated by Lake Secession (usable capacity, about 17,420,000,000 cubic feet).
                    City of Abbeville diverts a small amount of water during year for municipal supply.
               EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 10,900 ft3/s, Mar. 26, 1964, gage height, 12.79 ft.
               STAGE-DISCHARGE RELATION. --Defined by current-motor measurements below 8,450 ft3/s and graphically 'extended
                  on logarithmic plotting paper.
                     FLOOD-FREQUENCY DATA (ft3     Is)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                    -27 YEARS OF RECORD                                       Mean                          -    3.649
                     LOG-PEARSON TYPE     III                                 Standard Deviation            -    0.265
                         Q     .  4,570                                       Weighted Skew                - -0.241
                         Q5    -  7,500
                               -  9,580
                         Q 10    12 300
                           25      1
                         Q50     14,400
                         0100    16,500


                                                                Peak Stages and Discharges


               Water     Date    Gage     Discharge       Water      Date      Gage     Discharge       Water      Date      Gage     Discharge
               year             height                    year                height         3          year                height
                                  ft)        (ft3 /s)                          (ft)       (ft /a)                            (ft)       (ft3 /s)

               1951    Dec.    7  3.44       1,240        1961     Feb.  25     6.81      4,366         1975     Mar.  13    11.57      9,380
               1952    Mar. 25    9.44       9,450        1962     Feb.  22     5.42      2,960         1976     Mar.  17     6.08      3,380
               1953    Mar. 23    4.54       2,240        1963     Mar.  13     7.68      5,330         1977     Oct.    9    7.50      4,800
               1954    Jan. 23    5.09       2,880        1964     Mar.  26    12.79      10,900        1978     Oct.  26     6.84      4,140
               1955    Feb.    6  4.92       2,700        1965     Oct.   6    12.51      10,600        1979     Apr.  13    11.40      9,180

               1956    Sept.27    6.22       4,110        1966     Mar.   5     9.57      7,030         1980
               1957    Apr. 5     3.60       1,260        1971     Mar.   3    10.65      6,280         1981     Oct.    1    9.24      6,660
               1958    Nov. 20    7.45       5,000        1972     Jan.  11     7.21      4,510         1982     Jan.    4    9.56      2,020
               1959    Sept. 7    6.23       3,860        1973     Apr.   1     5.86      3,160
               1960    Feb. 14    5.87       3,560        1974     Jan.   9    11.20      8,940







































                                                                              121











                                                                          SAVANNAH RIVER BASIN

                                                          02189000 SAVANNAH RIVER NEAR CALHOUN FALLS, SC
                   LOCATION.--Lat 34*04115", Abbeville County, Hydrologic Unit 03060103, on left bank 150 ft upstream from bridge on
                         State Highway 72, 1.0 mi downstream from Seaboard Coast Line Railroad bridge, 1.5 mi downstream from Rocky
                         River, 3.0 mi southwest of Calhoun Falls, and at mile 279.7.
                   DRAINAGE AREA.--2,876 mi     2.

                   PERIOD OF RECORD.--August 1896 to August 1898, March 1899 to December 1900, January to December 1903, March 1930
                         to July 1932, April 1938 to 1979. Published as "at Calhoun Falls" 1897-99. Records for January 1901 to
                         December 1902, published in WSP 65, 75, and 83 have been found unreliable, and should not be used. Gage-
                         height records collected at original site 1.0 mi upstream during 1899-1928 and at present site since 1928
                         are contained in reports of National Weather Service.

                   GAGE.--Water-stage recorder. Datum of gage is 363.53 ft National Geodetic Vertical Datum of 1929. Prior to July
                         1, 1928, nonrecording gage at railroad bridge 1.0 mi kupstream at altitude 369.0 ft.

                   REMARKS.--Records good. Flow regulated by powerplants above station, by Burton and Mathis Reservoirs, and by
                         Hartwell Lake.
                   EXTREMES FOR PERIOD OF RECORD.--Maximum discharge 96,500 fts/s, Aug. 13, 1940, gage height, 11.52 ft.
                   EXTREMES OUTSIDE PERIOD OF RECORD.--The flood of Aug. 25, 1908 reacbedo; ;t5ge og 28.2 ft at original site and
                         datum, fr%m records of National Weatber Service, discharge, 144,0               t /s, from rating curve extended above
                         14, 000 ft / a.
                   STAGE-DJS@HARGE RELATIONS. --Defined by current meter measurements below 50,000 ft3/s. Extended above 50,000
                         ft /a by velocity-area studies.

                                                                     Peak Stages   and Discharges


                   Water     Date     Gage     Discharge       Water      Date       Gage    Discharge        Water      Date     Gage      Discharge
                   year              height         3          year                 height                    year                height
                                      (ft)      (ft /3)                              (ft)       (ft3/5)                            (ft)      (ft3 /5)


                   1897    Apr. 5       ---      57,400        1927       Dec. 29     ---       27,800        1955     Feb. 7       6.89     40,200
                   1900    Feb. 14      ---      76,500        1928       Aug. 17     ---       130,000       1956     Sept.26      7.02     40,200
                   1901    Sept.18      ---      66,500        1929       Sept.27     ---       85,400        1957     Apr.    6    6.79     38,100
                   1902    Feb.  28     ---      76,100        1930       Oct.   2    ---       105,000       1958     Nov.  19     6.76     38,100
                   1903    June    7    ---      57,800        1931       Apr. 23    4.22       15,800        1959     June    2    6.41     32,800

                   1904    Aug.    9    ---      33,900        1932       Dec.   4   7.10       41,400        1960     Feb.  13     5.03     19,600
                   1905    July    2    ---      47,400        1933       Oct. 17    11.60      97,600        1961     Mar.    8    4.79     17,400
                   1906    Mar.  20     ---      42,200        1934       June   5   7.00       39,400        1962     Dec.  19     5.62     26,000
                   1907    Oct.    4    ---      33,900        1935       Jan. 10    6.00       29,400        1963     Apr.  30     6.12     30,900
                   1908    Aug.  25     ---      114,000       1936       Apr.   7   11.50      96,200        1964     Apr.    8    8.08     60,000

                   1909    June    4    ---      43,900        1937       Oct.   1   9.00       63,000        1965     Oct.    6    6.91     44,800
                   1910    Mar.    1    ---      45,200        1938       Oct. 20    8.20       53,100        1966     Mar.    4    7.50     52,500
                   1911    Jan.    4    ---      23,500        1939       Aug. 19    7.88       49,600        1967     June    5    6.76     39,900
                   1912    Mar.  16     ---      75,700        1940       Aug. 13    11.52      96,500        1968     Jan.  10     6.17     33,200
                   1913    Mar.  15     ---      48,300        1941       July   7   6.70       35,300        1969     Jan.  20     7.04     43,400

                   1914    Doc.  30     ---      22,200        1942       Feb. 18    7.73       47,200        1970     July  29     5.89     32,000
                   1915    July    1    ---      38,300        1943       Jan. 18    8.21       53,100        1971     Mar.    4    6.97     45,600
                   1916    Dec.  30     ---      44,800        1944       Mar. 20    7.91       49,500        1972     Jan.  10     6.20     35,700
                   1917    Mar.  25     ---      40,000        1945       Apr. 25    6.40       33,300        1973     Dec.  16     6.80     43,400
                   1918    Aug.    3    ---      26,100        1946       Jan.   8   9.41       68,400        1974     Apr.    5    5.84     31,400

                   1919    Dec.  23     ---      59,100        1947       Jan. 20    7.47       44,800        1975     Mar.  14     7.32     47,100
                   1920    Dec.  10     ---      63,100        1948       Mar.   7   6.11       29,800        1976     Mar.  16     6.72     39,400
                   1921    Feb.    9    ---      51,800        1949       Nov. 29    8.94       61,800        1977     Mar.  30     6.35     35,200
                   1922    Mar.  11     ---      34,800        1950       Oct.   8   5.98       29,400        1978     Jan.  26     7.16     45,000
                   1923    Dec.  19     ---      35,700        1951       Oct. 21    5.98       28,800        1979     Apr.  13     7.78     52,900

                   1924    Sept.21      ---      40,000        1952       Mar. 24    8.65       58,000        1980     Mar.  28     10.30    91,400
                   1925    Jan. 19      ---      31,700        1953       Feb. 22    6.94       38,400
                   1926    Jan. 19      ---      28,300        1954       Jan. 17    7.44       44,500





















                                                                                    122










                                                                   SAVANNAH RIVER BASIN

                                                     02192500 LITTLE RIVER NEAR MOUNT CARMEL, S.C.


              LOCATION.--Lat 34*04'13", long 82*30'02", McCormick County, on right bank 480 ft downstream from Island Ford
                    bridge, 2.8 mi upstream from Calhoun Creek, and 4.5 mi north of Mount Carmel.
              DRAINAGE AREA.--217 m12.

              PERIOD OF RECORD.--December 1939 to 1970, crest-stage gage 1971 to current year.

              GAGE.--Water-stage recorder. Datum of gage is 353.97 ft National Geodetic Vertical Datum of 1929.

              REMARKS.--Records good except for periods of no gage-height record, which are poor.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 20,800 ft3          /a, #ug. 14, 1940, gag; @eight, 29.60 ft, (from
                    high-water mark), from rating curve extended above 23,000 ft Is; minimum, 0.7 t /a, Oct. 9, 1954.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 13,600 ft3/s and graphically extended on
                    logarithmic plotting paper.
                     FLOOD-FREQUENCY DATA (ft3    /s)                        LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                     46 YEARS OF RECORD                                      Mean                           -    3.674
                     LOG-PEARSON TYPE     III                                Standard Deviation             -    0.237
                        Q     -   4,730                                      Weighted Skew                 - -0.017
                        Q     =   7,470
                              =   9,490
                        Q 10  =   12,200
                        Q 25  =   14,400
                          50  =   16,700
                        Q100


                                                               Peak Stages and Discharges


              Water     Date      Gage    Discharge       Water      Date     Gage     Discharge        Water     Date      Gage     Discharge
              year             height                     year               height         3           year               height         3
                                  (ft)      (ft3/.)                           (ft)       (ft /a)                            (ft)       (ft /a)


              1940    Aug,  14    29.60     20,800        1960     Jan.  31   15.60       4,300         1980
              1941    July  17    22.23     9,020         1961     Mar.   9   14.92       3,970         1981     Oct.   1     12.50      2,700
              1942    Mar.  22    19.18     6,400         1962     Feb.  23   15.86       4,580         1982     Jan.   4     15.68      4,740
              1943    Jan.  19    20.37     7,310         1963     Apr.  30   15.84       4,410         1983
              1944    Mar.  20    20.90     8,020         1964     Mar.  27   23.11       10,000        1984     Jan.  11     15.50      4,240

              1945    Apr.  25    16.88     5,020         1965     Mar.  25   19.76       6,800         1985     Feb.   6     12.51      2,710
              1946    Dec.  25    13.00     3,210         1966     Mar.   5   18.96       6,230         1986
              1947    Jan.  20    17.35     5,300         1967     Aug.  25   11.79       2,390         1987     Mar.   1     16.89      5,010
              1948    Nov.  11    12.81     3,130         1968     Jan.  11   16.70       4,900         1988     Jan.  20     4.48          390
              1949    Nov.  29    22.55     9,350         1969     Jan.  21   19.61       6,690

              1950    July  25    8.74      1,760         1970     Mar.  22   10.63       1,950
              1951    Apr.   2    7.55      1,440         1971     Mar.   3   22.64       9,500
              1952    Mar.   4    19.47     6,610         1972     Jan.  11   18.99       6,260
              1953    May    1    12.68     2,970         1973     Apr.   1   23.60       10,600
              1954    Jan.  17    13.93     3,490         1974     Jan.  10   14.62       3,760

              1955    Feb.   7    15.64     4,310         1975     Mar.  13   22.86       9,750
              1956    Mar.  17    14.34     3,450         1976     Mar.  17   17.58       5,390
              1957    Apr.   5    9.23      1,900         1977     Oct.   9   23.02       2,960
              1958    Nov.  19    18.20     5,760         1978     Oct.  26   16.51       4,800
              1959    Sept. 7     17.57     5,400         1979     Apr.  13   18.25       5,790




























                                                                             123











                                                                       SAVANNAH RIVER BASIN

                                                          02195000 SAVANNAH RIVER NEAR CLARKS HILL, SC

                   LOCATION.--Lat 33*38140", long 82*12'05", McCormick County, Hydrologic Unit 03060107, on right bank 1.2 miles
                        downstream of Thurmond Dam, 2.4 miles southwest of Clarks Hill, 2.5 miles upstream from Kiokee Creek, and at
                        mile 221.1 upstream from Savannah, Ga.
                   DRAINAGE AREA.--6,150 mi 2 (approximately).

                   PERIOD OF RECORD.--May 1940 to June 1954.

                   GAGE.--Water stage recorder. Datum of gage is 182.69 ft, National Geodetic Vertical Datum of 1929 (levels by
                        Corps of Engineers). Auxiliary water-stage recorder 6.3 miles downstream.

                   REMARKS.--Records fair. Prior to December 1951 some regulation by Burton and Mathis Reservoirs and powerplants
                        above station. From 1951 flow completely regulated by Thurmond Reservoir.
                                                                                         3
                   EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 196,000 ft /a, Aug. 14, 1940, gage height, 29.34 ft.

                   STAGE-DISCHARGE RELATION.--Defined by discharge measurements throughout entire range of flows.

                                                                    Peak Stages and Discharges


                   Water    Date     Gage      Discharge      Water      Date      Gage     Discharge        Water    Date        Gage    Discharge
                   year             height         3          year                height        3            year               height        3
                                     (ft)      (ft /3)                             (ft)      (ft /a)                              (ft)     (ft /8)

                   11940    Aug.  14   29.34     196,000      1945     Apr. 26     15.72      61,200         1950    Oct.    9    11.61     36,800
                    1941    July    8  14.12       54,900     1946     Jan.    8   22.11     110 000        21951    Oct.   22    14.54     48,700
                    1942    Mar.  23   20.77       99,300     1947     Jan.  21    19.99      87:000         1952    Mar.    7    11.56     35,400
                    1943    Jan.  20   22.16     111,000      1948     Feb.  10    16.61      63,600        31953    May     7    10.52     30,000
                    1944    Mar.  21   22.31     111,000      1949     Nov.  30    26.35      154,000        1954    Mar.   30    10.67     30.000


                    1
                     Period May   to September
                    2
                     March 25, 1952
                    3
                     Period October   to June






















































                                                                                  124










                                                                   SAVANNAH RIVER BASIN

                                                        02196000 STEVENS CREEK NEAR MODOC, S.C.


              LOCATION.--Lat 33*4314511, long 82*10155". Edgefield County, Hydrologic Unit 03060107, on left bank at bridge on
                    State Highway 23, 1.4 mi east of Modoc, and 3.2 mi downstream from Turkey Creek.
              DRAINAGE AREA.--545 m12, approximately.

              PERIOD OF RECORD.--November 1929 to September 1931, February 1940 to September 1978, November 1983 to current
                    year. Monthly discharge only for some periods, published in WSP 1303.

              GAGE.--Water-stage recorder. Datum of gage is 197.34 ft National Geodetic Vertical Datum of 1929 (levels by
                    Southeastern Power Administration). October 15, 1929, to Sept. 30, 1931, nonrecozding gage at site 1,100 ft
                    upstream at different datum.

              REMARY,S.--Records good.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 35,100 ft3/s, Aug. 14, 1940, gage height, 41.08 ft.
              STAGE-DISCHARGE RELATION. --Defined by cuzrent-meter measurements below 26,200 ft3/s and graphically extended
                   on logarithmic platting paper.
                     FLOOD-FREQUENCY DATA (ftsts)                           LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                      4   EARS OF RECORD                                    Mean                          =    4.091
                      Lk! PEARSON TYPE   III                                Standard Deviation            =    0.217
                              = 12,600                                      Weighted Skew                = -0.234
                        QQ2   - 18,900
                        Q 5   - 23,100
                        Q10   - 28 400
                          25       1
                        Q50   ' 32,300
                        Q100  = 36,200

                                                               Peak Stages and Discharges


              Water     Date    Gage     Discharge       Water      Date     Gage     Discharge       Water      Date      Gage     Discharge
              year             h7ight       (ft3ls)      year               height         3          year                height        3
                                 ft)                                         (ft)       (ft /a)                            (ft)      (ft /a)


              1931    Apr.   1              5,550        1954     Jan.  16   14.47       4,110        1969     Apr.  16    34.25    22,700
              1940    Aug.   14 41.08       35,100       1955     Apr.  15   24.75      11,300        1970     Mar.  22    24.66    10,800
              1941    June   25             6,000        1956     Apr.  12   22.74       9,430        1971     Mar.   3    32.47    20,100
              1942    Mar.   22 29.64       16,800       1957     May    5   20.32       7,330        1972     Jan.  12    27.07    13,200
              1943    Jan.   19             18,700       1958     Apr.  16   28.87      15,900        1973     Apr.   1    27.92    14,100

              1944    Mar.   21 35.88       26,200       1959     Mar.   6   20.60       7,600        1974     Apr.   5    27.28    13,400
              1945    Apr.   25 20.10       7,220        1960     Jan.  31,  29.07      16plOO        1975     Mar.   3    30.16    16,900
              1946    Dec.   26 25.27       11,800       1961     Feb.  25   31.26      19,000        1976     Mar.  17    25.97    12olOO
              1947    Mar.   8  24.41       11.000       1962     Jan.   7   32.57      20,900        1977     Oct.   9    30.87    17,800
              1948    Feb.   10 27.36       14,200       1963     Mar.  13   23.44      10,100        1978     May    9    25.94    12,000

              1949    Nov.   29 30.27       17,700       1964     Aug.  31   38.89      30,900        1984     Jan.  11    24.18    20,300
              1950    Mar.   7  14.50       4,060        1965     Dec.  27   32.90      20.700        1985     Feb.   6    26.31    12,400
              1951    Apr.   3  19.66       6,760        1966     Mar.   5   27.13      13,200        1986     Oct.   4    21.41      7,950
              1952    Mar.   5  30.59       18,200       1967     May   23   20.28       7,020        1987     Jan.  23    24.25    10,400
              1953    Feb.   15 21.51       8,360        1968     Jan.  11   28.15      14,400        1988     Sept. 9     15.93      4,760





























                                                                            125











                                                                  SAVANNAH RIVER BASIN

                                                        02197000 SAVANNAH RIVER AT AUGUSTA, GA


                  LOCATION.--Lat 33'22125", long 81'5613511, Richmond County, Hydrologic Unit 03060106, at New Savannah Bluff
                      lack and dam, 0.2 mi upstream from Butler Creek, 12.0 mi downstream from Augusta, and at mile 187.4.
                  DRAINAGE AREA.--7,508 m12, including that of Butler Creek.

                  PERIOD OF RECORD.--October 1883 to December 1891, January 1896 to December 1906, January 1925 to current year.
                       Monthly discharges only for some periods, published in WSP 1303. Gage-height records collected at site of
                       Fifth street gage from 1875 to 1952 and at New Savannah Bluff lock and dam sites since 1937 are contained
                       in reports of National Weather Service.

                  GAGE.--Water-stage recorder. Datum of gage is 96.58 ft, National Geodetic Vertical Datum of 1929 (Corps of
                       Engineers bench mark). Oct. 1, 1883 to Dec. 31, 1891, Jan. 1, 1896, to Dec. 31, 1906, Jan. 1, 1925, to
                       Sept. 30, 1932, nonrecording gage at Fifth Street Bridge at datum 102.06 ft NGVD (levels by Southeastern
                       Engineering Co.). Oct. 1, 1932 to Sept. 30, 1936, recording gage at Thirteenth Street bridge at datum
                       104.56 ft NGVD (levels by Corps of Engineers). Oct. 1, 1936, to Nov. 10, 1948, recording gage at site 0.2
                       mi downstream from present site and at present datum.

                  REMARKS.--Records good, Flow regulated by Hartwell Lake, by Thurmond Lake, by Richard B. Russell Lake, and by
                       other powerplants above station.
                  EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 350,000 fts/s, Oct. 3, 1929- maximum gage height, 46.3 ft,
                       Sept. 27, 1929 (at site and d5tum then in use); minimum digcharge, 648 fts/s, Sept. 24, 1939, from rating
                       curve extended below 1,400 ft /a; minimum daily, 1,040 ft Is, Oct. 2, 1927.

                  EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of January 17, 1796, reached a stage of about 40 feet (at site and
                       datum of Fifth Street gage), marked by local residents; discharge approximately 360,000 ft3/s, by slope
                       conveyance study. Little information exists and the data are considered approximate. Data furnished by the
                       U.S. Army Corps of Engineers.

                  STAGE-DISCHARGE RELATION.--Peak discharges prior to 1912, excluding the 1796 flood, were determined using a
                       stage-discharge rating established by discharge measurements made during the 1890's and early 1900's. The
                       stage-discharge relation is defined by direct measurement.

                  FLOOD-FREQUENCY DATA.--Th,e flood-frequency relation for this station was computed by routing pre-regulation
                       hydrograpbs through the existing system of reservoirs using the methodology described by Sanders and others
                       (1990). Interested individuals should consult this reference for further frequency information at this
                       site.























































                                                                          126











                                                                      SAVANNAH RIVER BASIN

                                                    02197000 SAVANNAH RIVER AT AUGUSTA, GA, Continued


                                                                Peak Stages   and Discharges


                Water   Date     Gage      Discharge       Water      Date      Gage     Discharge       Water      Date      Gage    Discharge
                year            height                     year               height                     year                height
                                 (ft)       (ft3/s)                              (ft)     (ft3/s)                             (ft)      (ft3 /S)

                I
                1796    Jan.  17   40.00    360,000,      1911     Apr.  14   19.10       32,800         31951    Oct.  22    22.32      46,300
                1840    May   28   37.80    270,000*      1912     Mar.  17   36.80      234,000         1952     Mar.    6   21.53      39,300
                21852   Aug.  29   37.40    250,000,      1913     Mar.  16   35.10      156,000         1953     May     8   20.80      35,200
                1864    Jan.    1  34.9     185,000*      1914     Dec.  31   24.30       48,000         1954'    Mar.  30    17.39      25,500
                1865    Jan.  11   36.90    240,000       1915     Jan.  20   28.20       61,000         1955     Apr.  15    16.77      23,900

                1876    Dec.  30   28.60     86,400       1916     Feb.    3  31.00       82,400         1956     Apr.  12    14.70      18,600
                1877    Apr.  14   31.40    119,000       1917     Mar.    6  29.20       68,000         1957     May     7   14.08      18,000
                1878    Nov.  23   23.50     51,500       1918     Jan.  30   25.50       45,500         1958     Apr.  18    22.91      66,300
                1879    Aug.    3  22.00     44,000       1919     Dec.  24   35.00      128,000         1959     June    8   18.65      28,500
                1880    Dec.  16   30.10    102,000       1920     Dec.  11   35.40      133,000         1960     Feb.  14    20.58      34,900
                1881    Mar.  18   32.20    130,000       1921     Feb.  11   35.10      129,000         41951    Apr.    2   20.56      34,800
                1882    Sept.12    29.30     93,300       1922     Feb.  16   32.00       92,000         1962     Jan.    9   20.09      32,500
                1883    Jan. 22    30.80    111,000       1923     Feb.  28   28.00       59,700         1963     Mar.  23    19.52      31,300
                1884    Apr. 16    28.00     81,000       1924     Sept.22    28.00       59,700         1964     Apr.    9   24.16      87,100
                1885    Jan.  26   27.50     77,000       1925     Jan. 20    36.50      150,000         1965     Dec.  27    20.62      34,600

                1886    May   21   32.50    135,000       1926     Jan. 20    27.30       55,300         1966     Mar.    6   21.50      39,300
                1887    July  31   34.50    173,000       1927     Dec.  30   24.00       39,000         1967     Aug.  25    18.10      26,500
                1888    Sept.11    38.70    303,000       1928     Aug.  17   40.40      226,000         1968     Jan.  12    20.94      35,900
                1889    Feb.  19   33.30    149,000       1929     Sept.27    46.30      343,000         1969     Apr.  21    22.24      45,600
                1890    Feb.  27   22.90     48,500       1930     Oct.    2  45.10      350,000         1970     Apr.    1   17.68      25,200

                1891    Mar.  10   35.50    197,000       1931     Nov.  17   19.90       26,100         1971     Mar.    5   23.30      63,900
                1892    Jan.  20   32.80    140,000       1932     -Jan.   9  30.40       93,800         1972     Jan.  20    20.36      33,700
                1893    Feb.  14   25.00     60,000       1933     Oct.  18   30.30       92,600         1973     Apr.    8   21.63      40,200
                1894    Aug.    7  24.00     54,000       1934     Mar.    5  28.50       73,200         1974     Feb.  23    20.13      32,900
                1895    Jan.  11   30.40    106,000       1935     Mar.  14   27.40       63,700         1975     Mar.  25    22.24      45,600

                1896    July  10   30.50    107,000       1936     Apr.    8  41.20      258,000         1976     June    5   20.27      33,300
                1897    Apr.    6  29.30     93,300       1937     Jan.    4  30,10       91,400         1977     Apr.    7   20.50      34,200
                1898    Sept. 2    31.30    117,000       1938     Oct.  21   30.10       91,400         1978     Jan.  26    21.98      43,100
                1899    Feb.    8  31.00    113,000       1939     Mar.    2  24.10       90,900         1979     Feb.  27    21.13      37,300
                1900    Feb.  15   32.70    138,000       1940     Aug.  15   29.40      239,000         1980     Mar.  31    22.33      47,200

                1901    Apr.    4  31.80    124,000       1941     July    8  22.89       53,300         1981     Feb.  12    14.70      17,700
                1902    Mar.    1  34.60    175,000       1942     Mar   23   24.56      105,000        51982     Jan.    2   19.39      30,700
                1903    Feb.    9  33.20    147,000       1943     Jan   20   25.10      117,000         1983     Apr.  10    23.21      66,100
                1904    Aug.  10   25.50     63,000       1944     Mar   22   25.53      128,000         1984     May     5   20.35      34,000
                1905    Feb.  14   25.80     64,800       1945     Apr   27   23.16       64,000         1985     Feb.    7   17.89      25,700

                1906    Jan.    5  29.60     96,600       1946     Jan     9  24.43       97,200         1986     Oct.    3   15.74      21,000
                1907    Oct.    5  23.60     52,000       1947     Jan   22   23.97       86,000         1987     Mar.    6   18.98      29,200
                1908    Aug.  27   38.80    307,000       1948     Feb   10   23.90       83,200         1988     Feb.    5   10.61      13,600
                1909    June    5  28.70     87,300       1949     Nov   30   26.61      154,000
                1910    Mar.    2  26.40     69,800       1950     Oct     9  20.10       32,500

                     1
                      Flood of January 17, 1796, reached a stage       of about 40 fe5t (at site and datum of Fifth Street gage),
                marked by    local residents; discharge approximately 360,000 ft /s, by slope conveyance study. Little
                iInformation exists    and the data are considered approximate. Data furnished by the U.S. Army Corps of
                Engineers.
                     2
                      U.S. House of Representatives Document No. 64.
                     3
                      Filling of Thurmond Lake begain In December 1951.
                     4
                      Filling of Hartwell Lake began in February 1961.
                     5
                      Filling of Russell Lake began in October 1984.

                      Estimated values.


















                                                                              127










                                                                        SAVANNAH RIVER BASIN

                                                         02197300 UPPER THREE RUNS NEAR NEW ELLENTON, SC


                   LOCATION.--Lat 33*23'05", long 81'37'00", Aiken County, Hydrologic Unit 03060106, on downstream side of bridge
                         on U.S. Highway 278, 0.4 mi upstream from Johnson Fork Creek, and 4.6 mi southeast of New Ellenton.
                   DRAINAGE AREA.--87.0 m12.

                   PERIOD OF RECORD.--June 1966 to current year.

                   GAGE.--Water-stage recorder. Elevation of &age is 175 ft, National Geodetic Vertical Datum of 1929.

                   REMARKS.--Records good.
                   EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 472 fts/s, June 13, 1973, gage height, 8.37 ft.
                   STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 388 ft3/s and graphically extended on
                        logarithmic plotting paper.
                          FLOOD-FREQUENCY DATA (ft3ls_)                           LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                          22 YEARS OF RECORD                                      Mean                           -   2.539
                          LOG-PEARSON TYPE III                                    Standard Deviation             -   0.078
                             Q2    =   347                                        Weighted Skew                 - -0.120
                             Q 5   =   402
                             Q10   =   434
                             Q     -   469
                             Q 25  =   493
                               50  =   516
                             Q100

                                                                    Peak Stages and Discharges


                   Water     Date     Gage    Discharge        Water      Date     Gage     Discharge       Water      Date      Gage     Discharge
                                                               year               height                    year                height
                   year             height         3                                             3                                             3
                                       (ft)     (ft /s)                            (ft)       (ft /s)                             ft)       (ft /s)


                   1967    Aug. 24                 320         1977     Mar.  22    7.07         304        1987      Mar.   1    7.60        370
                   1968    June 9      6.07        237         1978     Jan.  25    7.38         344        1988     Sept.  9     6.86        278
                   1969    Sept.19     6.91        301         1979     Apr.  26    7.36         341
                   1970    Mar.  30    6.83        303         1980     Mar.  13    7.77         400
                   1971    Aug.  17    8.00        420         1981     Feb.  11    7.10         308

                   1972    Aug.  17    7.52        372         1982     Jan.   1    7.57         364
                   1973    June  13    8.37        472         1983     Mar.   6    7.32         331
                   1974    Feb.    7   6.60        260         1984     May    4    8.13         466
                   1975    July  15    7.34        341         1985     Feb.   6    7.75         400
                   1976    May   29    7.96        429         1986     Nov.  22    7.50         360









































                                                                                  128










                                                                  SAVANNAH RIVER BASIN

                                         02197310 UPPER THREE RUNS ABOVE ROAD C AT SAVANNAH RIVER PLANT, SC


              LOCATION.--Lat 33*17'08", long 81*41'40", Aiken County, Hydrologic Unit 03060106, on right bank, 100 ft
                    upstream of SRP Road C, 2.0 mi east of SRP Road 2, at Savannah River Plant, 6 mi southeast of New Ellenton.
              DRAINAGE AREA.--176 m12.

              PERIOD OF RECORD.--June 1974 to current year.

              GAGE.--Data collection Platform. Elevation of gage is 125 ft above National Geodetic Vertical Datum of 1929
                   (from topographic map).

              REMARKS.--Records good.
              EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 962 ft3/s, Feb. 6, 1985, gage height, 6.25 ft.
              STAGE-DISCHARGE RELATION. --Defined by current-meter measurements below 736 ft3/s and graphically extended on
                   logarithmic plotting paper.
                     FLOOD-FREQUENCY DATA (ft3    /s)                       LOG-PEARSON TYPE III STATI!@TICS (LOG UNITï¿½j
                     14 YEARS OF   RECORD                                   Mean                               2. 838
                      LOG-PEARSON  TYPE III                                 Standard Deviation            .    0.090
                        Q     =    692                                      Weighted Skew                - -0.108
                        Q 2   =    822
                        Q 5   =    897
                        Q 10       984
                        Q 25    1  040
                          50    1:100
                        Q100


                                                               Peak Stages and Discharges


              Water     Date    Gage     Discharge       Water     Date      Gage     Discharge       Water     Date      Gage     Discharge
              year             height         3          year               height         3          year                height        3
                                (ft)       (ft /s)                            (ft)      (ft /a)                            (ft)      (ft /a)


              1975    July 16    5.74         586        1980     Max. 13      6.10        880        1985      Feb. 6      6.25       962
              1976    May   29   5.47         732        1981     June   8     5.42        582        1986      June 11     5.96       802
              1977    Mar.  23   5.51         540        1982     Jan.   1     5.73        696        1987      Mar. 1      6.12       891
              1978    Jan.  26   6.04         646        1983     Mar.   7     5.59        641        1988      Sept.10     4.96       460
              1979    Feb.  25   6.21         680        1984     May    5     6.08        840















































                                                                            129










                                                                          SAVANNAH RIVER BASIN

                                               02197315 UPPER THREE RUNS AT ROAD A AT SAVANNAH RIVER PLANT, S.C.


                    LOCATION.--Lat 33*14'20', long 81*44'42", Aiken County, Hydrologic Unit 03060106, near right bank, on downstream
                         side of bridge at SRP Road A, 2.0 mi south of SRP Road 2, at Savannah River Plant.
                    DRAINAGE AREA.--203 mi2.

                    PERIOD OF RECORD.--June 1974 to January 1978, October 1978 to current year.

                    GAGE.--Water-stage recorder. Elevation of gage is 90 ft above National Geodetic Vertical Datum of 1929 (from
                        topographic map).

                    REMARKS.--Records good.
                    EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 1,230 ft3/s, May 29, 1976, gage height, 6.76 ft.
                                                                                                            3
                    STAGE DISCHARGE RELATION--Defined by current-meter measurements below 809 ft /a and graphically extended on
                       logarithmic plotting paper.
                          FLOOD-FREQUENCY DATA CfOL-)                              LOG-PEARSON TYPE III STATISTICS (LOG UNITS)
                          13 YEARS OF RECORD                                       Mean                            =  2.906
                          LOG-PEARSON TYPE III                                     Standard Deviation              =  0.091
                              Q2     =  804                                        Weighted Skew                   -  0.064
                              Q5     =  961
                              Q10     1,060
                              Q25     1,170
                              Q50     1,250
                              Q100    1,330


                                                                     Peak Stages and Discharges


                    Water    Date     Gage     Discharge        Water     Date       Gage     Discharge       Water     Date       Gage     Discharge
                    year             height         3           year               height                     year                height
                                      @ft)       (ft /a)                             (ft)       (ft3Is)                            (ft)       (ft 3Is)


                     1975    July 16    5.74          626       1980     Mar. 14     6.23         951         1965     Feb. 7      6.09         893
                     1976    May 29     6.76        1,230       1981     Feb. 12     5.33         620         1986     Nov. 23     5.80         780
                    11977    Mar. 23    5.62          717       1982     Jan.    2   5.83         793         1987     Mar. 1      6.03         869
                     1978    ------     ----         ----       1983     Apr.   11   6.36         1010        1988     Sept.11     4.49         428
                     1979    Feb. 25    6.33          730       1984     May     5   6.01         861


                     1No record for   period  of Jan 10, 1978 to Oct     25, 1978 because gage was removed for construction of new bridge.



























                                                                                   130










                                                                   SAVANNAH RIVER BASIN

                                        02197500 SAVANNAH RIVER AT-BURTONS FERRY BRIDGE, NEAR MILLHAVEN, GA

              LOCATION.--Lat 32*56120", long 81*30'10", Screven County (GA) - Allendale County (SC, Goergia-South Carolina
                 State line, Hydrologic Unit 03060106, on right bank 500 ft downstream from U.S. Highway 301 bridge, 2.0 mi
                 downstream from Rocky Creek, 9.0 mi east of Millhaven, and at mile 118.7 (revised).
              DRAINAGE AREA.--8,650 m12, approximately.

              PERIOD OF RECORD.--October 1939 to September 1970, October 1982 to current year.

              GAGE.--Water-stage recorder and data collection platform. Datum of gage is 52.42 ft above National Geodetic
                 Vertical Datum of 1929.

              REMARKS.--Records good. Flow regulated by Thurmond Lake and affected by regulation of Hartwell Lake and Richard
                    B. Russell Lake.
              EXTREMES FOR PERIOD OF RECORD.--Maximum dischrge, 141,000 ft3/s, Aug 18, 1940, gage height, 27.0 ft.
              EXTREMES OUTSIDE PERIOD OF RECORD.--Flood in October 1929 reached a stage of 30.8 ft from information by Corps of
                    Engineers, discharge, 220,,000 ft /s, from rating curve extended graphically above 141,000 ft /s on
              logarithmic plotting paper.
              STAGE-DISCHARGE RELATION. --Defined by current meter measurements up to 141,000 ft3/s, which is maximum for period
                    of record.

                                                               Peak Stages   and Discharges


              Water     Date    Gage     Discharge        Water     Date      Gage     Discharge       Water      Date    . Gage     Discharge
              year             height         3           year               height         3          year                height
                                 (ft)       (ft /s)                           (ft)       (it /s)                            (ft)       (ft3 /s)


              1930    Oct.        30.80     220,000       1952      Mar.  29   18.26      38,500       1965       Apr.   4   17.66      32,800
              1940    Aug.  18    27.00     141,000       1953      May   13   17.52      31,800       1966       Mar.   9   18.05      37,100
              1941    July  13    18.20     38,400        1954      Apr.    6  14.40      17,600       1967       June  17   15.47      22,000
              1942    Mar,  26    22.00     73,000        1955      Apr.  18   113.21     15,000       1968       Jan.  16   16.64      26,800
              1943    Jan.  23    22.60     80,900        1956      Mar.  19   11.95      13,700       1969       Apr.  25   18.31      37,200

              1944    Mar.  26    23.40     89,300        1957      May   11   12.27      13,900       1970       Apr.   4   14.14      18,200
              1945    May     1   18.80     42,900        1958      Apr.  22   18.94      41,400       1983       Apt.  15    ---       60,000
              1946    Jan.  12    21.60     68,600        1959      June  13   16.59      27,400       1984       May   12   17.83      33,900
              1947    Jan.  25    21.53     67,500        1960      Feb.  17   18.28      37,100       1985       Feb.  10   14.69      19,700
              1948    Feb.  14    21.10     61,000        1961      Apr.  25   17.60      32,400       1986       Nov.  25   12.71      15,200

              1949    Dec.    3   24.91     108,000       1962      Jan.  15   16.75      27,400       1987       Mar.  10   16.79      27,600
              1950    Oct.  14    14.87     18,500        1963      Mar.  27   17.22      2g'200       1988       Oct    2   10.80      11,900
              1951    Oct.  27    16.53     25,700        1964      Apr.  15   22.10      71,700


               2Peak  gage  height occurred April 14.

























                                                                             131











                                                                        SAVANNAH RIVER BASIN

                                                               02198500 SAVANNAH RIVER NEAR CLYO, GA

                     LOCATION.--Lat 32*3113011, long 81*15'45", Effingham County (GA) - Jasper County (SC), Hydrologic-Unit
                        03060109, at Georgia-South Carolina State line, on downstream side of center pier of drawspan of bridge on
                        Seaboard Coast Line Railroad, 3.0 mi north of Clyo, and at mile 60.9.
                     DRAINAGE AREA.--9,850 mi2, approximately.

                     PERIOD OF RECORD.--October 1929 to September 1933, October 1937 to current year. Monthly discharge only for
                        some periods, published in WSP 1303. Gage-height records collected at same site 1921-43 by National
                        Weather Service (unpublished prior to 1933).

                     GAGE.--Water-stage recorder. Datum of gage is 13.39 ft National Geodetic Vertical Datum of 1929. Prior to Jan.
                         31, 1933, nonrecording gage at same site and at datum 4.00 ft higher. Jan. 31, 1933, to June 12, 1945,
                        nonrecording gage at same site and datum.

                     REMARKS.--Records good. Flow regulated by Hartwell Lake, by Thurmond Lake, Richard B. Russell Lake and by other
                         powerplants above station.
                     EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 270,000 ft3/s, Oct. 6, 1929, gage height, 29.7 ft, present
                        datum (from information by Corps of Engineers).
                                                                                                                  3
                     STAGE-DISCHARGE RELATION.--Defined by current meter measurements below 119,000 ft /s and graphically extended on
                          logarithmic plotting paper.

                                                                     Peak Stages and Discharges


                    Water     Date    Gage     Discharge       Water      Date       Gage     Discharge      Water      Date      Gage      Discharge
                    year              height                   year                height                    year               height
                                      (ft)       (ft3 /s)                            (ft)     (ft 3/s)                            (ft)      (ft 3 /5)


                    1925    Jan. 24   23.90      134,000       1947     Jan.  28     19.40      63,200       1969     Apr.  29     16.74     39,700
                    1926    Jan. 28   15.40       31,400       1948     Feb,  17     19.66      71,000       1970     Apr.    7    13.31     21,000
                    1927    Mar.   6  13.40       30,600       1949     Dec.    6    22.17      104,000      1971     Mar.    6    18.11     54,500
                    1928    Aug. 23   22.30      106,000       1950     Oct.  19     12.21      16,000       1972     Jan.  26     16.30     36,400
                    1929    Mar. 11   23.60      128,000       1951     Nov.    1    13.38      22,600       1973     Apr.  15     17.29     44,500

                    1930    Oct.   6  29.70      270,000       1952     Apr.    2    16.90      41,300       1974     Mar.    1    15.78     33,000
                    1931    Nov. 28   12.77       18,200       1953     May   17     15.80      35,800       1975     Mar.  24,30  17.83     50,600
                    1932    Jan. 15   19.18       59,600       1954     Apr.  12     12.49      18,800       1976     June  14,15  15.87     33,500
                    1933    Jan.   4  19.20       59,600       1955     Apr.  23     11.35      15,500       1977     Dec.  22     15.85     33,400
                    1934    June 15.  17.20       43,800       1956     Mar.  22     10.47      14,100       1978     Feb.    3    16.81     38,700

                    1935    Mar. 22   15.20       29,100       1957     May   15     11.15      15,000       1979     Apr.  27     16.34     36,600
                    1936    Apr. 13   26.00      176,000       1958     Apr.  25     17.41      45,500       1980     Apr.    2    18.40     58,600
                    1937    Jan. 11   19.40       65,800       1959     June  18     14.36      26,000       1981     Feb.  16     10.39     13,600
                    1938    Apr. 16   17.80       48,400       1960     Feb.  19     17.35      40,900       1982     Jan.  11     12.89     19,500
                    1939    Mar.   8  20.40       70,100       1961     Apr.  25     16.20      34,900       1983     Apr.  17     18.40     58,600
                    1940    Aug. 22   23.60      128,000       1962     Jan.  19     114.98     28,200       1984     May   14     16.48     37,700
                    1941    July 17   16.30       36,500       1963     Mar.  31     15.27      29,200       1985     Feb.  15     12.89     19,500
                    1942    Mar. 29   20.00       73,000       1964     Apr.  18     20.22      83,800       1986     Nov.  28     11.50     15,800
                    1943    Jan. 27   20.00       73,000       1965     Apr.    6    16.52      38,000       1987     Mar.  13     15.57     29,700
                    1944    Mar. 29   21.60       95,200       1966     Mar.  11     17.10      42,800       1988     Oct.    4      8.93    11,400

                    1945    May    5  16.00       34,400       1967     June  22     13.67      22,500
                    1946    Jan. 16   19.50       64,400       1968     Jan.  21     14.84      28,000


                    lOccurred at different time than     peak  discharge.


















                                                                                   132








               Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization study


                 Map      Station         Period      Drainage
               index         name           of         area        Flood discharge, in cubic feet per second, for
               number       and           record      (square          indicated recurrence interval, in years
                           number         (years)      miles)
                                                                   2         5        10         25        50        100



                                                           Lower Coastal Plain



                  1       Waccamaw          38       1,110        5,510     8,560    10,600    13,500     15,500    17,800
                          River at
                          Longs,
                          S.C.
                          (02110500)

                  2       Catfish           22           27.4      291       505         675       913     1,110     1,330
                          Canal at
                          Sellers,
                          S.C.
                          (02131150)

                  3       Carter            18           8.28      211       375         502       687       835     1,000
                          Creek
                          near
                          Effingham,
                          S.C.
                          (02131990)

                  4       Two Mile          13           19.0      266       489         675       958     1,200     1,480
                          Branch
                          near
                          Lake City,
                          S.C.
                          (02132100)









              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization study--Continued


                Map      Station        Period     Drainage
               index       name           of         area       Flood discharge, in-cubic feet per second, for
              number        and         record      (square         indicated recurrence interval, in years
                         number         (years)      miles)
                                                                 2         5         10        25       50       100



                                                         Lower Coastal Plain


                  5      Black            31         401        2,720     4,580    5,820     7,590     8,810    10,200
                         River
                         near
                         Gable, S.C.
                         (02135500)

                  6      Black            61       1,252        5,640    10,300   15,200    29,500    45,300    66,500
                         River
                         near
                         Kingstree,
                         S.C.
                         (02136000)

                  7      Wedboo           21           17.4       274       558       788     1,130    1,400     1,710
                         Creek
                         near
                         Jamestown,
                         S.C.
                         (02171680)

                  8      Cow Castle       10           23.4       427       822     1,150     1,690    2,140     2,680
                         Creek near
                         Bowman, S.C.
                         (02174250)








              Table I.--Weighted flood discharge for selected recurrence intervals for rural streamflow stations used
                    in the regionalization study--Continued


                Map      Station        Period     Drainage
               index       name            of         area      Flood discharge, in cubic feet per second, for
              number         and        record      (square         indicated recurrence interval, in years
                          number         (years)     miles)
                                                                  2         5         10       25        50         100



                                                          Lower Coastal Plain


                   9     Savannah          12           12.4       286       467      606       814       973    1,170
                         Creek
                         near
                         Ehrhardt,
                         @S.C.
                         (02175450)

                  10     Combahee          15      1,100        5,650      8,800   10,800 14,000      16,100    18,700
                         River
                         near
                         Yemassee,
                         S.C.
                         (02176000)

                  11     Coosawatchie      38        203        1,670      2,740    3,530    4,710     5,620     69660
                         River near
                         Hampton,
                         S.C.
                         (02176500)

                  12     Buckhead          21          64.0     1,150      2,?60    3,210    4,660     6,060     7,710
                         Creek
                         near
                         Waynesboro,
                         Ga.
                         (02201350)









              Table 1.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization_@ @ud --Continued


                Map      Station       Period     Drainage
              index       name            of        area        Flood discharge, in cubic feet per second, for
              number       and         record      (square         indicated recurrence interval, inyears
                         number         (years)     miles)
                                                                 2         5         10      25        50         100



                                                        Lower Coastal Plain


                13       Richardson       21          43.0       664      1,210    1,640    2,260     2,810    3,410
                         Creek near
                         Millen, Ga.
                         (02201800)

                14       Hooker           24          4.38       163        222       263     311       348       386
                         Branch
                         Tributary
                         near
                         Millen, Ga.
                         (02201830)

                15       Mill Creek       12          39.0       724      1,070    1,300    1,600     1,820    2,040
                         near
                         Statesboro,
                         Ga.
                         (02202300)

                16       Canoochee        26          55.0       772      1,250    1,600    2,100     2,490    2,910
                         Creek
                         near
                         Swainboro,
                         Ga.
                         (02202800)







              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization_@ @ud --Continued


                Map      Station       Period     Drainage
              index       name            of        area       Flood discharge, in cubic feet per second, for
              number       and         record      (square        indicated recurrence interval, in years
                          number        (years)     miles)
                                                                2         5        10      25        50      100



                                                         Lower Coastal Plain


                17       Reedy            10          8.99       272      420      539     707       843     990
                         Creek near
                         Twin City,
                         Ga.
                         (02202820)

                18       Reedy            10          3.41       186      265      321     394       447     499
                         Branch
                         near
                         Metter,
                         Ga.
                         (02202850)

                19       Fifteen          21       147         1,600     2,550   3,240    4,150     4,900   5,680
                         Mile
                         Creek near
                         Metter, Ga.
                         (02202900)

                20       Ten Mile         24           1.14       97      181      252     359       453     561
                         Creek near
                         Pulaski,
                         Ga.
                         (02202910)









             Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization @@d --Continued


               Map     Station        Period     Drainage
             index       name           of         area        Flood discharge, in cubic feet per second, for
             number       and         record     (square          indicated recurrence interval, in years
                        number        (years)     miles)
                                                                2        5         10       25       50       100



                                                       Lower Coastal Plain



               21      Canoochee        51         555         4,020    6,610     8,680    11,700  14,400 17,400
                       River

                       near
                       Claxton,
                       Ga.
                       (02203000)

       01)
               22      Lotts            10           2.37       143      272        371       507     622       743
                       Creek
                       near
                       Statesboro,
                       Ga.
                       (02203150)

               23     'Peacock          11          33.0        478      838      1,120     1@490   1,780     2,100
                       Creek
                       at
                       McIntosh,
                       Ga.
                       (02203559)

               24      Reese Creek      17           9.96       189      384        560       864   1,150     1@530
                       near Fayette-
                       ville, N.C.
                       (02104080)







               Table i.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization study -Continued


                 Map      Station       Period     Drainage
               index        name           of        area        Flood discharge, in cubic feet per second, for
               number       and          record     (square          indicated recurrence interval, in years
                          number         (years)     miles)
                                                                  2         5         10       25       50        100



                                                          Lower Coastal Plain


                 25       Browns           18          11.3       163        440       729   1,280    1,830   2,500
                          Creek near
                          Elizabeth-
                          town, N.C.
                          (02105570)

                 26       Turnbull         19          60.1       529      1,140    1,730    2@750    3J20    4,890
                          Creek near
                          Elizabeth-
                          town, N.C.
                          (02105630)

                 27       Hood Creek       21          19.7       598      1@060    1,440    2tOlO    2,500   3tO6O
                          near Leland,
                          N.C.
                          (02105900)

                 28       Little           35          92.8       915      1@610    2,220    3,200    4,070   5tI20
                          Coharie
                          Creek near
                          Roseboro,
                          N.C.
                          (02106000)









              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionali@@tion study--Continued


                Map      Station        Period    Drainage
              index        name           of        area        Flood discharge, in cubic feet per second, for
              number       and          record     (square         indicated recurrence interval, in years
                         number         (years)     miles)
                                                                 2        5         10        25      50        100



                                                        Lower Coastal Plain



                29       Turkey Creek     18          14.8        405       753   11050      1,520   1,930   2,410
                         near Turkey,
                         N.C.
                         (02106240)

                30       Stewarts         16          0.64         56       103      146       221     293      390
                         Creek Tribu-
                         tary near
                         Warsaw, N.C.
                         (02106410)

                31       Black River      33        676         3,720    5,920    79740    10,600 13,000 15,800
                         near Tomahawk,
                         N.C.
                         (02106500)

                32       Big Swamp        20          31.9        544    1,100    1,640      2,600   3,490   4,540
                         near Roseboro,
                         N.C.
                         (02106910)

                33       South River      33        379         29100.   3,290    4,230     5,660    69930   8,440
                         near Parkers-
                         burg, N.C.
                         (02107000)








              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization study--Continued


                Map      Station        Period     Drainage
              index        name            of         area        Flood discharge, in cubic feet per second, for
              number       and          record       (square         indicated recurrenc6,interval, in years
                          number        (years)      miles)
                                                                   2         5         10        25       50        100



                                                          Lower Coastal Plain




                34       Colly Creek       24         108          564       972      1,300    1,850    2,370   3,040
                         near Kelly,
                         N.C.
                         (02107500)

                35       Rockfish          27           69.3     1,430      2@370     2,470    49340    5,320   69420
                         Creek near
                         Wallace,
                         N.C.
                         (02108500)

                36       Turkey Creek      19           10.5       309       677      19040    1,680    2,270   2,970
                         near Castle
                         Hayne, N.C.
                         (02108630)
                37       Buckhead          19           14.7       405       704        964    1,380    1,750   2,190
                         Branch
                         near
                         Bolton,
                         N.C.
                         (02108960)










            Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization study-Continued


              Map      Station        Period     Drainage
            index        name           of         area        Flood discharge, in cubic feet per second, for
            number       and          record      (square         indicated recurrence interval, in years
                         number       (years)      miles)
                                                                2         5        10        25        50       100



                                                           Lower  Coastal Plain



               38      Waccamaw         45         680         4,000    6,180     7,770    99960 11,700 13,700
                       River
                       at
                       Freeland,
                       N.C.
                       (02109500)

               39      Wet Ash          18           16.2       417       785     1,100    1,600    2,040     2,570
                       Swamp near
                       Ash, N.C.
                       (02109640)

               40      Mill Branch      18           3.52       151       317       471      732       964    1,250
                       near Tabor
                       City, N.C.
                       (02110020)


                                                            Upper Coastal Plain


               41      Juniper          18           64.0       399       704       974    1,430     1,900    2,430
                       Creek near
                       Cheraw, S.C.
                       (02130500)








              Table I.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization study--Continued


               Map       Station        Period     Drainage
              index        name           of         area        Flood discharge, in cubic feet per second, for
             number        and          record      (square         indicated recurrence interval_, in years
                          number        (years)      miles)
                                                                  2         5         10        25       50        100


                                                         Upper Coastal Plain


                42       Black Creek      29         108          733      1,080     1,300     1,600    1,840   2,070
                         near McBee,
                         S.C.
                         (02130900)

                43       Little           49         524         2,500     3,900     4,960     6,440  7,700    8,960
                         Pee Dee
                         River
                         near
                         Dillon,
                         S.C.
                         (02132500)

                44       Scape Ore        20           96.0       687      1,040     1,310     1,660  1,960    2,240
                         Swamp near
                         Bishopville,
                         S.C.
                         (02135300)

                45       Colonel          14           40.2       304        518       692       942  1,162    1,385
                         Creek near
                         Leesburg,
                         S.C.
                         (02148300)









                ble 1.--Weighted flood discharoes for selected recurrence intervals for rural streamflow stations used
                   in the regionalization s@d --Continued


               Map      Station        Period     Drainage
             index        name            of        area        Flood discharge, in cubic feet per second, for
             number       and          record     (square           indicated recurrence interval, in years
                         number        (years)     miles)
                                                                 2         5         10        25      50        100



                                                         Upper Coastal Plain        -


                46      Congaree          21        122           860    19200      1,450    1,800    2,100   2,370
                        Creek near
                        Cayce, S.C.
                        (02169550)

                47      Big Beaver        22         10.1          94      180        272       417     538      671
                        Creek near
                        St. Matthews,
                        S.C.
                        (02169630)

                48      South Fork        44        198         1,540   .2,290.     2,820    3,500    4,060   4,590
                        Edisto
                        River near
                        Montmorenci,
                        S.C.
                        (02172500)

                49      South Fork        56        720         2,600    3,980      5tlOO    6,750    8,220   9,750
                        Edisto
                        River near
                        Denmark,
                        S.C.
                        (02173000)








              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization study--Continued


                Map      Station        Period     Drainage
              index         name           of        area        Flood discharge, in cubic feet per second, for
              number        and         record     (square           indicated recurrence interval, in years
                           number       (years)     miles)
                                                                  2         5        10        25      50       100


                                                          Upper Coastal Plain


                50       North Fork        51        683        2,640      31970     49990    6,420   7,630    8,820
                         Edisto
                         River at
                         Orange-
                         burg, S.C.
                         (02173500)

                51       Edisto            44      1,720        5,920      8,900    11,000   13t8OO 16,100 18,200
                         River
                         near
                         Branch-
                         ville,
                         S.C.
                         (02174000)

                52       Salkahatchie      38        341        1,530      2,240     2,740    3,410   3,960    4,460
                         River
                         near
                         Miley, S.C.
                         (02175500)

                53       McBean Creek      27         41.4      ____329-     557       741    1,000   1,220    1,470
                         near McBean,
                         Ga.
                         (02197190)










             Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization study-Continued


               Map      Station        Period     Drainage
             index        name           of         area        Flood discharge, in cubic feet per second, for
             number       and          record      (square         indicated recurrence interval, in years
                         number        (years)      miles)
                                                                 2        5         10        25      50        100



                                                        Upper Coastal Plain


               54       Brushy Creek     31           28.0       402       625       793    1,010   1,200    1,400
                        near Wrens,
                        Ga.
                        (02197600)

               55       Brier Creek      20         473         3,640    5,900     7,920   11,000 14,200 18,000
                        near
                        Waynesboro,
                        Ga.
                        (02197830)

               56       Big Creek        26           95.8       696     19200     1,580    2,090   2,520    2,970
                        near
                        Louisville,
                        Ga.
                        (02200900)

               57       Ogeechee         25           14.2       235       436       608      859   1,090    1,360
                        River
                        Tributary
                        near
                        Louisville,
                        Ga.
                        (02200930)







               Table I.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization_2Lud --Continued
                                                  I


                 Map      Station        Period     Drainage
               index        name            of         area        Flood discharge, in cubic feet per second, for
               number       and          record      (square          indicated recurrence interval, in years
                           number        (years)     miles)
                                                                    2         5         10        25       50        100



                                                           Upper Coastal Plain


                 58       Flat Creek        16           7.63        136       221       290      393      482       582
                          near
                          Inverness,
                          N.C.
                          (02102908)

                 59       South Prong       19           7.57        123       207       272      373      465       562
                          Anderson
                          Creek near
                          Lillington,
                          N.C.
                          (02103390)

                 60       Little River      44         459         3,390     5,270     6@850    9,400 llp600 14,100
                          near Linden,
                          N.C.
                          (02103500)

                 61       Rockfish          16         292         2,020     3,430     4,600    6,520    8,150 10,000
                          Creek near
                          Hope Mills,
                          N.C.
                          (02104500)











              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the,regionalization     ud --Continued



                Map      Station       Period     Drainage
              index       name           of         area        Flood discharge, in cubic feet per second, for
              number       and         record     (square          indicated recurrence interval,, in years
                         number        (years)     miles)
                                                                 2         5        10        25      50       100


                                                        Upper Coastal Plain


                62       Bridge Creek    18           6.05        110      188      258       366     459      566
                         Tributary
                         at Johns, N.C.
                         (02132230)

                63       Drowning        45         178         1,320    2,460     3,530    5,490    7,340    9,670
      CO
                         Creek near
                         Hoffman, N.C.
                         (02133500)

                64       Beaverdam       18           4.42         81      130      161       210     254      293
                         Creek near
                         Aberdeen, N.C.
                         (02133590)

                65       Tenmile Swamp   18          16.6         231      365      459       596     716      844
                         near
                         Lumberton,
                         N.C.
                         (02134380)








              Table I.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization_aLudy--Continued


                Map      Station        Period     Drainage
              index        name            of        area        Flood discharge, in cubic feet per second, for
              number       and          record     (square          indicated recurrence interval, in years
                          number        (years)     miles)
                                                                  2         5         10        25      50        100


                                                          Upper Coastal Plain


                66       Lumber River      55      19228         4v2OO    79300      91900  14,100 17v5OO 21,600
                         at Boardman,
                         N.C.
                         (02134500)


                                                               Piedmont



                67       Fork Creek        12         24.3         649    1,170      19620    2v210   29690     3,180
                         near Jeffer-
                         son, S.C.
                         (02131309)

                68       Rocky Creek       32        194         69610    9,760     11,900   149800 179300 209000
                         at Great
                         Falls, S.C.
                         (02147500)

                69       Scabber           10           4.55     1,050    1,480      1,610    1,830   29020     2,250
                         Branch near
                         Great Falls,
                         S.C.
                         (02147600)










             Table l.--Weiqhted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization ILudy--Continued



               Map      Station        Period    Drainage
             index        name           of         area       Flood discharge, in cubic feet per second, for
             number       and          record     (square         indicated recurrence interval, in years
                         number        (years)     miles)
                                                                 2        5         10       25       50       100



                                                             Piedmont



               70       North            58        116        3,010     4,940    6,330     8,130    9,560 11,000
                        Pacolet
                        River at
                        Fingerville,
                        S.C.
     CD                 (02154500)

               71       North Tyger      38          44.4     1,360     2@180    2,770     3,530    4,130    4,740
                        River near
                        Fairmont,
                        S.C.
                        (02157000)

               72       Middle Tyger     42          68.3      2,510    3,220    3,690     4,310    4,820    5,340
                        River at
                        Lyman, S.C.
                        (02157500)

               73       North Tyger      41         162        3,730    5,920    7,490     9,520 11,200 12,900
                        River near
                        Moore, S.C.
                        (02158000)









             Table I.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization study--Continued


               Map      Station       Period     Drainage
             index        name           of       -area        Flood discharge, in cubic feet per second, for
             number       and         record     Cs@udre          indicated recurrence interval, in years
                        number        (years)     miles)
                                                                2        5        10       25         50      100



                                                            Piedmont



               74       South Tyger      41        106         2,460    3,780    4,780    6,100    7,190    8,320
                        River near
                        Reidville,
                        S.C.
                        (02158500)

               75       South Tyger      44        174         2,910    4,810    6,320    8,370 10,100 11,800
                        River near
                        Woodruff, S.C.
                        (02159000)

               76       Tyger River      28        351         6,480 11,500     15,200   20,200 24,400 28,900
                        near Woodruff,
                        S.C.
                        (02159500)

               77       Fairforest       49        183        3,990     5,890   7,120    8,610      9,780 10,900
                        Creek near
                        Union, S.C.
                        (02160000)

               78       Tyger River      15        759       10,300   15,400 19,200     23,800     27,800 31,900
                        Delta, S.C.
                        (02160105)










             Table i.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization study--Continued


               Map      Station        Period     Drainage
             index        name           of         area       Flood discharge, in cubic feet per second, for
             number       and          record     (square          indicated recurrence interval, in years
                         number        (years)     miles)
                                                                2         5        10        25        50        100



                                                             Piedmont


               79       Enoree River     59         307       6,220    10,000 12,700     16,300     19,300 22,400
                        near Enoree,
                        S.C.
                        (02160500)

               80       Enoree River     15         444       5,570     9,070 12,000     15,700     18,800 22,100
                        near Whitmire,
                        S.C.
                        (02160700)

               81       Cedar Creek      21          48.9     29700     3,690     4,050    4,470     4,840     5,310
                        near Blythe-
                        wood, S.C.
                        (02162010)

               82       Saluda River     43         295       4,580     6,590     8,080  10,000     11,600 13,200
                        near Green-
                        ville, S.C.
                        (02162500)

               83       Saluda           57         405       6,380     8,960 10,700     12,900     14,700    16,400
                        River near
                        Pelzer, S.C.
                        (02163000)








              Table i.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization_aLudy--Continued


                Map      Station       Period     Drainage
              index       name           of         area       Flood discharge, in cubic feet per second, for
              number       and         record      (square         indicated recurrence interval, in years
                         number        (years)      miles)
                                                                2         5        10       25         50       100



                                                             Piedmont


                84       Saluda River    50         581       9,160    13,500 16,300      19,600   22,100 24,700
                         near Ware
                         Shoals, S.C.
                         (02163500)

                85       Reedy River     49         236       4,300     6,720   8,440     10,600    12,400 14,100
                         near Ware
                         Shoals, S.C.
                         (02165000)

                86       South Rabon     15           29.9       832    1,600   2,220      3@040     3,700    4,390
                         Creek near
                         Gray Court,
                         S.C.
                         (02165200)

                87       Twelvemile      10         106        3,120    4,100   4,930      69030     7,020    8,040
                         Creek near
                         Liberty, S.C.
                         (02186000)

                88       Broadway        10           26.4        968   1,560   1,990      2,550     3,020    3,480
                         Creek near
                        .Anderson,
                         S.C.
                         (02187900)









             Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization study--Continued


               Map      Station        Period    Drainage
             index        name           of         area       Flood discharge, in cubic feet per second, for
             number       and          record     (square          indicated recurrence interval, in years
                         number        (years)    miles)
                                                                 2        5        10       25         50        100



                                                             Piedmont


               89       Rocky River      27         267        4,590    7,500    9,570    12,100    14,200 16,300
                        near Calhoun
                        Falls, S.C.
                        (02188000)

               90       Little River     46         217        4t720    7,400    9,320    11,800    13,800 15,900
     v,n                near Mt. Carmel,
                        S.C.
                        (02192500)

               91       Stevens Creek    45         545       12,400 18,200 21t700        25,800    29,100 32,500
                        near Modoc,
                        S.C.
                        (02196000)

               92       South            35          35.8      1,390    2,350    3,130     4,240     5t190     6t180
                        Beaverdam
                        Creek at
                        Dewy Rose,
                        Ga.
                        (02188500)

               93       Indian Creek     13           7.63         738  1,130    lt440     19850     2,200     2,550
                        near Carnes-
                        ville, Ga.
                        (02189020)









               Table i.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization study--Continued


                Map       Station       Period      Drainage
               index       name            of        area        Flood discharge, in cubic feet per second, for
              number       and          record     (square          indicated recurrence interval, in years
                          number        (years)     miles)
                                                                   2        5       10        25         50        100



                                                               Piedmont



                 94       Stephens         13           0.39       110      169     213        274        322      373
                          Creek Tri-
                          butary at
                          Carnes-
                          ville, Ga.
                          (02189030)                                         -

                 95       Bear Creek       13           3.62       398      717     973      1,330      1,640    1,960
                          near
                          Mize, Ga.
                          (02189600)

                 96       Toms Creek       13           3.79       486      833    19110     19520      lt870   29240
                          near
                          Eastanollee,
                          Ga.
                          (02190100)

                 97       Toms Creek       14           1.20       317      489     605        763        890    ltO2O
                          Tributary
                          near Avalon,
                          Ga.
                          (02190200)








              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in th_eregionalization_@ @ud --Continued


               Map       Station        Period     Drainage
              index        name           of         area        Flood discharge, in cubic feet per second, for
              number       and          record     (square          indicated recurrence interval, in years
                          number        (years)     miles)
                                                                 2       5        10      25        50       100



                                                              Piedmont



                 98      Double           16           0.50        174     283    - 359       466       551      642
                         Branch at
                         Bowers-
                         ville, Ga.
                         (02190800)

      %.n
      or\        99      North Fork       15         119         3,600   6,070    8,030   10,700     13,000 15,200
                         Broad River
                         near Carnes-
                         ville, Ga.
                         (02191000)

               100       Hudson River     29          61.1       2,280   3,910    5,160    6,660      8,280    9,680
                         at Homer, Ga.
                         (02191200)

               101       Scull Shoal      12         8.75        633   1,170    1,580   2,140     2,610    39070
                         Creek near
                         Daniels-
                         ville, Ga.
                         (02191270)

               102       Mill Shoal       25         0.32        110     174      217     273       315      358
                         Creek near
                         Royston, Ga.
                         (02191280)








             Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization study-Continued


              Map       Station        Period    Drainage
             index        name           of        area        Flood discharge, in cubic feet per second, for
             number       and          record    (square          indicated recurrence interval, in years
                         number        (years)    miles)
                                                                  2      5        10      25        50        100



                                                             Piedmont



              103       Broad River      89      760        13,200 22tOOO 28,500 37,300        44,600 52,000
                        above Carlton,
                        Ga.
                        (02191300)

              104       Double Branch    13        4.77        451     827    1,130   1,540     1,890    2,250
                        near Daniels-
                        ville, Ga.
                        (02191600)

              105       Fork Creek       12       13.8         857   lt370    1,780   2,320     2,770    3,220
                        at Carlton,
                        Ga.
                        (02191750)

              106       Brooks Creek     12         12.3       1,010    1,840   2,440   3,230     3,890     4,520
                        near
                        Lexington,
                        Ga.
                        (02191890)

              107       Trouble          17          2.70        166      307     431      610      758       918
                        Creek at
                        Lexington,
                        Ga.
                        (02191910)









             Table 1.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the reqionalization study--Continued


              Map       Station       Period      Drainage
             index       name            of        area        Flood discharge, in cubic feet per second, for
             number       and         record     (square          indicated recurrence interval, in years
                        number        (years)     miles)
                                                                2       5        10       25        50        100



                                                             Piedmont



              108       Buffalo          25           5.79       476     834    1,120    1,550      9io    2,290
                        Creek near
                        Lexington,
                        Ga.
                        (02191930)

     CO
              109       Macks Creek      17           3.45       221     423      604       870   1,100     1,340
                        near
                        Lexington,
                        Ga.
                        (02191960)

              110       Little Macks     27           1.77      188     352      485       675      829       994
                        Creek
                        Tributary
                        near
                        Lexington,
                        Ga.
                        (02191970)

              ill       Broad River      59      1,430       21,700 31,800 38,700       47,300   54,200 60,500
                        near Bell,
                        Ga.
                        (02192000)









             Table l.--Weiqhted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the-regionalizatibn_lLudy--Continued


              Map       Station       Period      Drainage
             index        name           of        area        Flood discharge, in cubic feet per second, for
             number       and         record     (square          indicated recurrence interval, in years
                         number        (years)    miles)
                                                                 2       5         10       25       50       100



                                                            Piedmont



              112       Hog Fork         31          0.10        43      74      96       125       148     171
                        Fishing Creek
                        Tributary
                        near
                        Tignall, Ga.
                        (02192300)

              113       Anderson         12          5.49       552     929   lt2lO     1,580    1,870    2J60
                        Mill Creek
                        near
                        Danburg, Ga.
                        (02192400)

              114       Anderson         12          0.92        151     297       410      565       690     821
                        Mill Creek
                        Tributary
                        near Danburg,
                        Ga.
                        (02192420)

              115       Stephens         12          6.30        750   1,180     1,500    1,960     2,350   2,740
                        Creek near
                        Crawford-
                        ville, Ga.
                        (02193300)











             Table i.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization study--Continued


              Map       Station        Period    Drainage
             index        name           of         area       Flood discharge, in cubic feet per second, for
             number       and          record     (square          indicated recurrence interval, in years
                         number        (years)    miles)
                                                               2         5        10       25        50        100



                                                             Piedmont



              116       Harden Creek     12           3.98       480      750       953    1,230     1,460    1,680
                        near Sharon,
                        Ga.
                        (02193400)

              117       Little River     22         291        6,390 10,600      13,700   17,400    20,400 23,100
                        near Washing-
                        ton, Ga.
                        (02193500)

              118       Rocky Creek      12         1.14       328       464     556       686       790       897
                        near Washing-
                        ton, Ga.
                        (02193600)

              119       North Prong      20         3.63       537     1,010   1,380     1,990     2,460    3,000
                        Creek near
                        Hunters-
                        ville, N.C.
                        (02124060)








              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization study -Continued


                Map      Station        Period     Drainage
               index       name           of         area        Flood discharge, in cubic feet per second, for
              number       and          record     (square          indicated recurrence interval, in years
                          number        (years)     miles)
                                                                  2        5         10        25        50       100



                                                               Piedmont



                120      Mallard          18         20.6      1,600    29350     2,900     3,690   4,360     5,120
                         Creek near
                         Charlotte,
                         N.C.
                         (02124130)
      ON
                121      Big Bear         30         55.6      4t680    7pOOO     8@330    lOp3OO   11,600 13,000
                         near Rich-
                         field, N.C.
                         (02125000)

                122      Chinkapin        18         8.40      19320    2,150     2,610     3,360    3t850    4,390
                         Creek near
                         Monroe, N.C.
                         (02125410)

                123      Rocky River      55        19372       329700 46,300     54,700    65,500     73,400 81,300
                         near Norwood,
                         N.C.
                         (02126000)

                124      Brown Creek      36          110        2,190    4,150    6,060     9,180     12,100 15,700
                         near Polkton,
                         N.C.
                         (02127000)











              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization study--Continued


               Map       Station        Period     Drainage
              index        name            of         area        Flood discharge, in cubic feet per second, for
              number       and          record       (square         indicated recurrence interval, in years
                          number        (years)       miles)
                                                                   2         5         10       25         50       100



                                                                Piedmont




               125       Palmetto          17           0.86        174       274       348      459        550      651
                         Branch near
                         Ansonville,
                         N.C.
                         (02127390)

               126       Little River      30         106         4,030     5,680     6,900    8,560      9,980 11,500
                         near Star,
                         N.C.
                         (02128000)
                                  1
               127       Cheek Creek       18           15.5        978     1,700     2,330    3,340      4,230    5,260
                         near Pekin,
                         N.C.
                         (02128260)

               128       South Fork        18           16.2       854      1,240     1,590   2,050      2,480    2,980
                         Jones Creek
                         near Morven,
                         N.C.
                         (02129440)








              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the reqionalization_@ @ud --Continued


               Map       Station       Period     Drainage
              index       name            of        area        Flood discharge, in cubic feet per second, for
              number       and         record      (square         indicated recurrence interval, in years
                         number        (years)      miles)
                                                                  2        5        10       25        50        100



                                                              Piedmont




               129       Hagan Creek      15          8.46        812   1,370     1,780    2,460     29990     3,600
                         near Catawba,
                         N.C.
                         (02142480)

               130       Henr Fork        48         83.2       4,920   8,460    11,200 15,700      19,500 23,600
                             y
                         near Henry
                         River, N.C.
                         (02143000)

               131       Jacob Fork       23         25.7       2,190   3,480     4,350    5,710     6,760     7,900
                         at Ramsey,
                         N.C.
                         (02143040)

               132       Indian Creek     33         69.2       2,220   3,810     5,190    7,260     99080 11,100
                         near Labora-
                         tory, N.C.
                         (02143500)

               133       Long Creek       31         31.8       1,500   2,530     3,440    4,860     6,130     79610
                         near Bessemer
                         Cityq N.C.
                         (02144000)








              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization_2Lud@--Continued


               Map       Station        Period     Drainage
              index        name           of         area        Flood discharge, in cubic feet per second, for
              number       and          record      (square         indicated recurrence interval, in years
                          number        (years)      miles)
                                                                   2        5        10       25        50       100



                                                              Piedmont



               134       South Fork       30         628        10,100 15,300     19,600 25,700       31,000 36,800
                         Catawba River
                         at Lowell, N.C.
                         (02145000)

               135       East Fork        18          42.3       2,280    3,170    3,850    4,830      5,720    6,720
                         Twelve Mile
                         Creek near
                         Waxhaw, N.C.
                         (02146890)

               136       Twelve Mile      24          76.5       3,070    41570    5,660    7,110      8,340     9,680
                         Creek near
                         Waxhaw, N.C.
                         (02146900)

               137       Cove Creek       33          79.0       3,060    4,680    5,800    7,290      8,490     9,770
                         near Lake
                         Lure, N.C.
                         (02149000)

               138       Camp Creek       17          12.2          638   1,000    1,320    1,710     2,080   2,500
                         near Ruther-
                         fordton, N.C.
                         (02150420)









             Table i.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization_2Ludy--Continued


               Map      Station        Period    Drainage
              index       name           of         area       Flood discharge, in cubic feet per second, for
             number       and          record      (square         indicated recurrence interval, in years
                         number        (years)     miles)        2        5       10       25        50      100


                                                             Piedmont



               139      Broad River      58         875       16,800 25,900     32,800 42,400     50,400 59,100
                        near Boiling
                        Springs, N.C.
                        (02151500)

               140      First Broad      25           60.5     2,990     4,750   6,010    7,800     9,200 10,700
                        River near
                        Casar, N.C.
                        (02152100)

               141      Big Knob         18           15.8     1,050     1,660   2,150    2@890     3,530    4,250
                        Creek near
                        Fallston,
                        N.C.
                        (02152420)

               142      First Broad      39         200        6,710     9,640  11,800   15-,00    17,600 20,500
                        River near
                        Lawndale,
                        N.C.
                        (02152500)











              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                   in the regionalization sWdy--Continued


               Map       Station        Period     Drainage
              index        name           of          area        Flood discharge, in cubic feet per second, for
              number       and          record     (square           indicated recurrence interval, in years
                          number        (years)     miles)
                                                                   2        5         10      25        50        100



                                                                    Piedmont


               143       Sugar Branch     31            1.42        373      595      744     953     1,100     1,270
                         near Boiling
                         Springs,
                         N.C.
                         (02152610)


                                                                   Blue Ridge


               144       Whitewater       16          48.5        2,960   4,300    5,280    6,740     8,090     9,380
                         River at
                         Jocassee,
                         S.C.
                         (02184500)

               145       Keowee River     18         148          8,750 12,400 14,700 18,000         21,200 24,000
                         near
                         Jocasee,
                         S.C.
                         (02185000)








              Table I.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization_@ @ud --Continued


               Map       Station         Period     Drainage
              index        name            of         area        Flood discharge, in cubic feet per second, for
              number       and           record     (square          indicated recurrence interval, in years
                          number         (years)     miles)
                                                                     2        5         10        25       50       100


                                                                   Blue Ridge


               146       Little River      21          72.0       3,560     6,410   8,470 11,400      14,100 16,700
                         near
                         Walhalla,
                         S.C.
                         (02185200)


               147       Seneca            22         455        16,100 20,200      22,900 26,500      29,800 32,300
                         River
                         near
                         Newry,
                         S.C.
                         (02185500)

               148       Chattooga          50        207         7,320 11,700      15,000 20,100      24,300 28,800
                         River near
                         Clayton, Ga.
                         (02177000)

               149       Chattooga          13        256         9,040 14,200      17,700 22,900      27,400 30,900
                         River near
                         Tallulah Falls,
                         Ga.
                         (02178000)










            Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization study--Continued


             Map       Station       Period     Drainage
            index        name          of         area       Flood discharge, in cubic feet per second, for
            number       and         record     (square         indicated recurrence interval, in years
                        number       (years)     miles)
                                                               2       5         10      25       50       100


                                                              Blue Ridge



             150       Tallulah        24          56.5      2,800   4,560     5,820   7,550    8,930 10,300
                       River near
                       Clayton, Ga.
                       (02178400)

             151       Little          19           2.50       139     291       433     642      830    1,040
     CO
                       Panther Creek
                       near Tallulah
                       Falls, Ga.
                       (02181800)

             152       Panther          50          32.5      2,230   4,510     6,370   9,220    11,600 14,200
                       Creek near
                       Toccoa, Ga.
                       (02182000)

             153       Chattahoochee    49         150        6,860 10,600     13,100 16,300     18,800 21,100
                       River near
                       Leaf, Ga.
                       (02331000)








              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization_jLudy--Continued


               Map       Station        Period    Drainage
              index        name           of        area        Flood discharge, in cubic feet per second, for
              number       and          record    (square          indicated recurrence interval, in years
                          number        (years)    miles)
                                                                  2       5         10      25        50      100


                                                                 Blue Ridge


               154       Soque River       26        156         5,640   8,980    11,400 14,800      17,500 20,300
                         near
                         Demorest,
                         Ga.
                         (02331500)

               155       Chattahoochee     49        315        11,600 17,400     21,100 25,800      29,300 32,400
                         River
                         near
                         Corneila,
                         Ga.
                         (02331600)

               156       Hiwassee River    42         45.5       1,990   3,200     4,090   5,270      6,210   7,150
                         at Presley,
                         Ga.
                         (03545000)

               157       French Broad    51          67.9       4,050   5@980     79320   9,170     10,700 12,200
                         River at
                         Rosman, N.C.
                         (03439000)











             Table i.--WQighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization study--Continued


              Map       Station       Period     Drainage
             index        name          of         area        Flood discharge, in cubic feet per second, for
             number       and         record      (square         indicated recurrence interval, in years
                        number        (years)      miles)
                                                                 2       5         10      25         50        100


                                                                Blue Ridge


              158       French Broad    31         103         4,590   7,060     8,840 11,500      13,600 15,900
                        River at
                        Calvert,
                        N.C.
                        (03439500)

              159       Catheys Creek   11           11.4         615  1,060     1,440    2,000     2,500     3,100
                        near Brevard,
                        N.C.
                        (03440000)

              160       Davidson        64           40.4      2,750   4,220     5,220    6,580     7,610     8,700
                        River near
                        Brevard, N.C.
                        (03441000)

              161       Little River    22           26.8      1,650   2,660     3,390    4,430     5,270     6,180
                        above High
                        Falls near
                        Cedar Mountain
                        N.C.
                        (03441440)









              Table l.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization@udy--Continued


                Map       Station        Period    Drainage
               index        name           of         area        Flood discharge, in cubic feet per second, for
              number        and          record      (square         indicated recurrence interval, in years
                          number         (years)     miles)
                                                                    2       5        10       25         50        100


                                                                   Blue Ridge


                162       Crab  Creek      13           10.9        564      965    1,360     1,950    2,500    3,140
                          near Penrose,
                          N.C.
                          (03442000)

                163       French Broad     64         296         7,010 11,200     14,600 19,900     24,400 29,600
                          River at
                          Blantyre,
                          N.C.
                          (03443000)

                164       South Fork       31           9.99        644    11110    1,520     2,160    2,740    3,420
                          Mills River
                          at The Pink
                          Beds, N.C.
                          (03444500)

                165       Mills River      52           66.7      2t540    4,030    5,240     7,000    8,510 10,200
                          near Mill
                          River, N.C.
                          (03446000)










              Table 1'.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in     regionalization_@ @ud --Continued


               Map       Station        Period     Drainage
              index         name           of        area         Flood discharge, in cubic feet per second, for
              number       and          record      (square          indicated recurrence interval, in years
                          number        (years)      miles)
                                                                    2       5        10       25         50       100



                                                                   Blue Ridge


               166       Laurel Branch     12           0.57         82       117     150       188      234      288
                         near
                         Edneyville,
                         N.C.
                         (03446410)

               167       Cedar Creek       10          42.2       1,560    2,730    3,790     5,370     6,760    8,320
                         near
                         Henderson-
                         ville,
                         N.C.
                         (03446500)

               168       French            50        676         11,100 15,800     19,600 24,600       28,900 33,600
                         Broad
                         River at
                         Bent Creek,
                         N.C.
                         (03448000)

               169       Hominy            35           79.8      2,020    3,620    5,130     7,550     9,820 12,500
                         Creek at
                         Candler, N.C.
                         (03448500)









               Table l.-Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                    in the regionalization_2Ludl--Continued


                Map       Station        Period      Drainage
               index        name            of         area        Flood discharge, in cubic feet per second, for
              number        and          record      (square           indicated recurrence interval, in years
                           number        (years)      miles)
                                                                     2        5         10      25          50        100



                                                                    Blue Ridge


                170       North Fork        27          24.0       1,780    3p420     4,890    7,500       9,710 12,400
                          Swannanoa
                          River near
                          Black
                          Mountain, N.C.
                          (03449000)

                171       Beetree Creek     51           5.46        246      420      585      842       1,090     1,390
                          near
                          Swannonoa,
                          N.C.
                          (03450000)

                172       Swannonoa         55         130         3,000    5,230    7,340 11,800       14,100 17,900
                          River near
                          Biltmore,
                          N.C.
                          (03451000)

                173       French Broad      89         945        15,000 22,200 27,900 35,800           42,500 49,900
                          River at
                          Asheville,
                          N.C.
                          (03451500)











             Table i.--Weighted flood discharges for selected recurrence intervals for rural streamflow stations used
                  in the regionalization study--Continued


              Map      Station       Period    Drainage
             index       name          of        area       Flood discharge, in cubic feet per second, for
             number      and         record    (square         indicated recurrence interval, in years
                        number       (years)    miles)
                                                              2       5        10      25        50      100


                                                             Blue Ridge



              174      Cullasaja       44         14.9        997   1,620    2,130   2,930     3@630   4,420
                       River'at
                       Highlands,
                       N.C.
                       (03500500)













































































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