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








                                          DRAINAGE STUDY)
                                         CITY OF POQUOS7/

        rx,





                                         UPDATE INVENTORY


                                                OF


                                            STRUCTURES

                                               AND


                                           IMPROVEMENTS







                 Financial assistance provided by the Coastal Zone Management Act of 1972,


         as amended, administered by the Office of Ocean and Coastal Resource Management,


          National Oceanic and Atmospheric Administration.









            HD       1992                                       C. K. TUDOR ENGINEERS, INC.
            1683                                                Consulting Engineers
            N8                                                  11524 Jefferson Avenue
            D7                                                  Newport News, Virginia 23601
            1992






            Rev. 7-20-92









                                             TABLE OF CONTENTS







              Topo Sheet Number 1                                   1-1

              Topo Sheet Number 2                                   2-1 to 2-2

              Topo Sheet Number 4                                   4-1 to 4-3

              Topo Sheet Number 5                                   5-1 to 5-7

              Topo  Sheet  Number 6                                 6-1

              Topo  Sheet  Number 8                                 8-1 to 8-3

              Topo  Sheet  Number 9                                 9-1 to 9-7

              Topo  Sheet  Number 10                                10-1 to 10-5

              Topo  Sheet  Number 11                                11-1

              Topo  Sheet  Number 13                                13-1

              Topo  Sheet  Number 14                                14-1 to 14-10

              Topo  Sheet  Number 15                                15-1 to 15-5

              Topo  Sheet  Number 16                                16-1 to 16-2

              Topo  Sheet  Number 17                                17-1

              Topo  Sheet  Number 18                                18-1 to 18-3

              Topo  Sheet  Number 20                                20-1

              Topo  Sheet  Number 21                                21-1

               Cover Sheet
               Index to Sheets
               Sheets 1 of 25 through 23 of 25





                                                       POQUOSON DRAINAGE STUDY




                   TOPO SHEET NUMBER I

                   NUMBER        DESCRIPTION                        TOP            INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                      1          12"                                 -                  -      Poquoson River
                      2          YD w/12" out                        -                  -      1
                      3          1211                                -                  -      2
                      4          1211                                -                  -      Poquoson River
                      5          1211                                -                  -      4
                      6          DI w/18" out                       6.38            4.23       7
                      7          1811                                -              3.90       Poquoson River




                                                       POQUOSON DRAINAGE STUDY



                  TOPO SHEET NUMBER 2

                  NUMBER        DESCRIPTION                        TOP              INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                      1         1211                                  -             4.28         2
                      2         1211                                  -             3.99         3
                      3         1511                                  -             3.91         4
                      4         1511                                  -                 -        Canal to Lyon's Creek
                      5         1211                                  -             3.88         6
                      6         1211                                  -             4.10         3
                      7         1211                                  -             4.13         8
                      8         1211                                  -             4.33         51
                      9         1211                                  -                 -        .10
                   10           1211                                  -             4.47         Lyon's Creek
                   11           1211                                  -                 -        12
                   12           1211                                  -                          13
                   13           B=2, D=2, Z=l                         -                 -        Canal to Roberts Creek
                   14           EW w/1511                          3.89             0.99         Roberts Creek
                   15           DI                                    -                 -        -
                                  15"  out                         4.59             1.58         14
                                  12"  in                          4.59             1.58         14
                   16           DI                                    -                 -        -
                                  1211 out                         4.65             1.81         15
                                  1211 in                          4.65             1.81         15
                   17           DI w112"     out                   4.93             2.33         16
                   18           EW w/24"                           3.63             0.32         Roberts Creek
                   19           DI                                    -                 -        -
                                  24" out                          4.58             1.09         18
                                  2111 in                          4.58             1.09         18
                                  1211 in                          4.58             1.86         18
                   20           MH w/21"     in and out            4.73             1.39         19
                   21           EW w121"                           4.03             1.71         20
                   22           DI w112"     out                   4.58             1.98         19
                   23           4811                                  -                 -        Roberts Creek
                   24           4811                                  -                 -        23
                   25           B=2, D=3,      Z=.33                  -                 -        24
                   26           1811                                  -                 -        25
                   27           1811                                  -                 -        26
                   28           B=2, D=3,      Z=.33                  -                          27
                   29           B=3, D=3,      Z=.33                  -                          30
                   30           B=4, D=.5, Z=1.3                      -                 -        Roberts Creek
                   31           EW w/18"                              -            -0.01         Canal to Poquoson River
                   32           DI                                    -                 -        -
                                  18   out                         3.78             0.94         31
                                  15"  in                          3.78             1.23         31
                                  1511 in                          3.78             1.15         31
                   33           DI                                    -                 -        -
                                  1511 out                         3.98             1.76         32
                                  1511 in                          3.98             1.79         32
                                  15"  in                          3.98             1.82         32
                   34           1511                                  -             1.83         33
                   35           1511                                                1.58         32





                                                                      2-1





                   TOPO SHEET NUMBER 2

                   NUMBER        DESCRIPTION                         TOP             INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                     36          1511                                                 2.68       32
                     37          1211                                                 0.91       Roberts Creek
                     38          DI                                     -                -       -
                                   1211  out                         3.91             1.23       37
                                   15"   in                          3.91             1.28       37
                     39          DI                                     -                -       -
                                   15    in                             -             1.47       38
                                   1511  out                            -             1.33       38
                     40          1511                                   -             1.74       39
                     41          1511                                   -             1.62       Roberts     'Creek
                     42          DI w/15"      out                   3.73             1.78       41
                     43          1511                                   -               -        Canal to Roberts Creek
                     44          DI w/15"      in and out            3.73             1.06       43
                     45          DI w/15" out                        3.73             1.13       44
                     46          1511                                   -             2.68       33
                     47          1211                                   -               -        48
                     48          1211                                   -               -        49
                     49          B=2, D=2, Z=.5                         -               -        50
                     50          B=8, D=5, Z=1.3                        -               -        Poquoson      River
                     51          1511                                   -             2.52       52
                     52          1511                                   -             2.30       57
                     53          1211                                   -               -        Poquoson      River
                     54          1211                                   -               -        53
                     55          1211                                   -               -        24
                     56          1211                                   -               -        55
                     57          B=3.5, D=2, Z=l                        -               -        Lyon's Creek





























                                                                        2-2





                                                       POQUOSON DRAINAGE STUDY



                  TOPO SHEET NUMBER 4

                  NUMBER        DESCRIPTION                        TOP              INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                  *Indicates proposed structures

                       1        B=40, D=4, Z=5                                      2.78       Poquoson River
                       2        B=2, D=1.5, Z=1.3                                   3.98       1
                       3        B=6, D=1.5, Z-5                                     4.03       1
                                PG-5                                                1.44       1
                       4        EW w/24" RCP                                        2.31       Poquoson River
                       5        2411                                                2.44       4
                       6        B=2, D=3.5, Z=2                                     2.75       5
                       7        2411                                                2.98       6
                       8        YD w/24" in         and  out       6.97             3.21       7
                       9        DI w/24" in         and  out       8.20             3.44       8
                    10          DI w/24" in         and  out       8.31             3.13       9
                    11          2411                                  -             3.65       10
                    12          B=3, D=6, Z=1.25                      -             4.05       11
                    13          B=6, D=4.5, Z=2                       -             5.25       12
                    14          B=3, D=3, Z=1                         -             5.30       13
                    15          B=2, D=1.5, Z=l                       -             7.78       14
                    16          B=2, D=2, Z=1.5                       -             3.53       Lambs Creek
                    17          EW w/24"                           6.38             3.37       16
                    18          DI w/24" in and          out       8.11             4.24       17
                    19          DI                                 8.06               -        -
                                  24 out                              -             4.49       18
                                  1811 in                             -             4.49       -
                    20          YD w/18"      in and     out       7.68             4.83       19
                    21          YD w/18"       out                 6.84             4.88       20
                    22          B=2, D=2, Z=1.5                       -             5.46       21
                    23          B=2.5, D=2, Z=2                       -             6.81       22
                    24          1811                                  -             6.46       23
                    25          1811                                  -             6.07       24
                    26          B=2, D=l, Z=2                         -             7.61       23
                    27          2411                                  -             0.00       Lambs Creek
                    28          DI w/24" in and out                5.80             1.35       27
                    29          DI w/2411 in and out               5.90             1.30       28
                    30          2419                                  -             1.47       29
                    31          15'1                                  -              -         Bricked and Abandoned
                    32          15'1                                  -             7.51       31
                    33          1811                                  -             4.68       103
                    34          1811                                  -             6.70       33
                    35          1811                                  -             6.88       34
                    36          YD w/18" in and out                   -             6.92       35
                    37          YD  w/18" in and out                  -             6.99       36
                    38          18                                    -             7.16       37
                    39          18"                                   -             6.81       38
                    40          1811                                  -             7.12       39
                    41          B=l, D=l, Z=l                         -              -         Poquoson River
                    42          B=l, D=l, Z=l                                                  41
                    43          1811                                                1.71       Poquoson River




                    Rev. 7-20-92                                       .4-1





                     TOPO SHEET NUMBER 4

                     NUMBER DESCRIPTION                             TOP             INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                     *Indicates proposed structures

                     44          DI w/18" in and out                6.73             2.03        43
                     45          DI                                   -                -         -
                                   1811 out                         6.73             2.11        42
                                   1511 in                            -              3.86        -
                     46          DI w/15"     in and out            6.73            3.95         43
                     47          DI w/15"      out                  6.73             4.03        46
                     48          B=4, P=3.5, Z=1.7                    -                -         Lambs Creek
                     49          B=3, D=2.5, Z=l                      -                -         48
                     50          3011    q                            -                -         49
                     51          3011                                 -                -         50
                     52          B=6,    D=2.5, Z=l                   -                -         51
                     53          B=3,    D=2,'Z=1.75                  -                -         52
                     54          B=2.5i D=1.5, Z=1.5                  -                -         53
                     55          B=l, D=.5, Z=3                       -              7.79        54
                     56          B=l, D=.5, Z=3                       -              8.50        54
                     57          B=4,    D=2, Z=2                     -                -         Lambs Creek
                     58          B=1.5, D=l, Z=.75                    -                -         57
                     59          B=3,    D=2, Z=.75                   -              5.56        58
                     60          1811                                 -              6.65        59
                     61          18'1                                 -              7.10        60
                     62          B=2,    D=1.5, Z=l                   -              8.62        61
                     63          B=2,    D=2, Z=1.25                  -              8.42        60
                     64          B=l,    D=.5, Z=3                    -              7.69        65
                     65          611                                  -              6.89        66
                     66          611                                  -              6.35        67
                     67          B=3,    D=2, Z=.75                   -              6.96        59
                     68          B=3,    D=2, Z=.75                   -              6.56        59
                     69          B=2,    D=1.5, Z=l                   -              8.00        61
                     70          1211                                 -              7.85        69
                     71          1211                                 -              8.05        70
                     72          B=l,    D=.5, Z=2                    -                -         Lambs Creek
                   *73           DI w/15" out                       6.65             3.47        75
                   *74           YD w/15" out                       6.00             2.82        75
                   *75           YD                                   -                -         -
                                   2-15" in                         5.00             2.60        Poquoson River
                                   1811 stub out                      -                -         -
                   *76           DI w/15" out                       6.51             3.71        77
                   *77           DI                                   -                -         -
                                   15" in                           6.51             3.59        79
                                   141sx23" out                       -                -         -
                   *78           DI w/14"x23"       out             6.56             3.73        79
                   *79           DI                                   -                -         -
                                   2-141sx23" in                    6.56             3.20        80
                                   191100" out                        -                -         -
                   *80           ES 19"00"                            -              2.78        Poquoson River
                   *81           YD w/15" out                       6.90             3.27        82
                   *82           YD w/15" in and out                6.90             3.12        83
                   *83           YD                                   -                -         -
                                   1511 in                          6.00             2.84        85
                                   1401x23" in                        -                -         -
                                   191100" out




                                                                      4-2






              TOPO SHEET NUMBER 4

              NUMBER      DESCRIPTION                 TOP         INVERT DOWNSTREAM NUMBER
                          All pipes are RCP
                          unless otherwise noted

              *Indicates proposed structures

              *84         YD w/14"x23" out            6.00         3.00     83
              *85         YD                           -              -     -
                            1911x3011 in and out      6.00         2.09     86
              *86         DI                           -              -     -
                            1911x3011 in and out      7.50         2.00     87
              *87         DI                           -              -     -
                            1911x3011 in              7.50         1.80     91
                            22"x34" in                 -              -     -
                            2711x42" out               -              -     -
              *88         DI w/14"x23"   out          7.70         2.38     89
              *89         DI                           -              -     -
                            141sx23" in               7.70         2.19     90
                            1911x30" in                -              -     -
                            191100"  out
              *90         DI                           -              -     -
                            1911x30" in               7.86         2.00     91
                            15" in                     -              -     -
                            221104"  out
              *91         MH                           -              -     -
                            22 x34"  in and out       7.80         1.89     87
              *92         MH                           -              -     -
                            4211x27" in and out       7.70         1.76     93
              *93         ES 42"x27"                   -           1.61     3
                94        DI w/24" out                 -              -     95
                95        DI w/24" in and out          -              -     96
                96        Box 24" in and out           -              -     97
                97        2411                         -              -     Lambs Creek
                98        DI w/15" out                 -              -     99
                99        DI w/1511 in and out         -              -     100
              100         15                           -              -     Lambs Creek
              101         DI w/15" out                 -              -     102
              102         1511                         -              -     Lambs Creek
              103         B=2, D=1.4, Z=1.5            -           3.83     30






















                                                        4-3





                                                       POQUOSON DRAINAGE STUDY



                  TOPO SHEET NUMBER 5

                  NUMBER        DESCRIPTION                        TOP            INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                      1         24                                                -1.12        Lyons Creek
                      2         24                                                -1.06        Lyons Creek
                      3         DI                                                   -         -
                                 18" and 24" in                    5.18           -0.80        112
                                 2-2411 out                         -                -         -
                      4         2411                                -               1.00       3
                      5         1811                                -               0.73       3
                      6         B=2, D=1.5, Z=2.67                  -               1.64       4/5
                      7         B=3, D=2, Z=1.75                    -               2.10       6
                      8         2411                                -               1.78       7
                      9         2411                                -               1.69       7
                    10          24"   'plugged                      -               1.79       7
                    11          EW w/24" plugged                   6.63             1.95       10
                    12          EW w/24"                           6.63             1.94       9
                    13          EW  w/24"                          6.63             1.87       8
                    14          2411                                -               3.62       130
                    15          2411                                -               3.92       14
                    16          B=2, D=2, Z=1.5                     -               4.33       15
                    17          B=2, D=2, Z=1.5                     -               5.90       16
                    18          EW w/48"06"                        4.76           -0.57        Lyons Creek
                    19          EW w/48"06"                        5.06           -0.27        18
                    20          B=4, D=6, Z=2                       -               0.65       19
                    21          B=4, D=6, Z=2                       -               0.65       20
                    22          EW w/27"                           7.24             3.99       21
                    23          DI                                  -                -         -
                                 1911x30"     in                   8.31             4.03       22
                                 1211 in                            -                -         -
                                 2711 out                           -                -         -
                    24          EW w/19"x3O"                       6.81             4.23       23
                    25          B=2, D=4.5, Z=2                     -               4.24       24
                    26          DI w112" in and         out        7.80             4.28       23
                    27          DI w112" out                       7.80             4.36       26
                    28          EW w127"                           7.08             3.68       21
                    29          YD                                  -                -         -
                                 27" in                            8.23             3.90       28
                                 271t out                           -               3.81       -
                    30          YD                                  -                -         -
                                 27" in                            8.23             4.40       29
                                 27" out                            -               4.44       -
                    31          DI w/19"x3O" in                    8.31             5.66       30
                                 27" out                            -               4.90       -
                    32          DI w/19"x30" in                    8.35             5.82       31
                                 19"x3O" out                        -               5.58       -
                    33          EW w/19"x3O"                       8.75             6.11       32
                    34          B=2, D=l, Z=l                       -               6.13       33
                    35          B=l, D=l, Z=ll                      -               7.34       33
                    36          EW w124"                           6.91             3.98       21





                                                                      5-1





                    TOPO SHEET NUMBER 5

                    NUMBER DESCRIPTION                             TOP             INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted


                    37          DI                                    -               -         -
                                   2111 in                         7.53             4.28        36
                                   2411 out                           -             4.36        -
                    38          DI                                    -               -         -
                                   2111 in                         7.60             4.34        37
                                   2111 out                           -             4.27        -
                    39          YD                                    -               -         -
                                   18"  in                         8.23             4.72        38
                                   2111 out                           -             4.48        -
                    40          DI                                    -               -         -
                                   1511 in                         7.73             4.97        39
                                   1811 out                           -             4.93        -
                    41          DI w/15"      out                  7.73             4.96        40
                    42          EW w/27"                           7.41             4.14        21
                    43          DI                                    -               -         -
                                   2711 in                         8.03             4.66        42
                                   27'  out                           -             4.61        -
                    44          DI                                    -               -         -
                                   2711 in                         8.09             4.80        43
                                   2711 out                           -             4.74        -
                    45          YD                                    -               -         -
                                   2411 in                         8.23             5.33        44
                                   15"  in                            -             5.39        -
                                   27"  out                           -             4.97        -
                    46          EW w/24"                           8.46             5.61        45
                    47          B=2,    D=l, Z=l                      -             7.54        46
                    48          B=l,    D=l, Z=l                                    6.85        46
                    49          DI                                    -               -         -
                                   1511 in                         7.83             5.59        45
                                   1511 out                           -             5.65        -
                    50          DI w/15"      out                  7.83             5.66        49
                    51          EW w/21"                           5.02             2.18        19
                    52          DI                                    -               -         -
                                   18 in                           5.94             2.77        51
                                   2111                               -             2.37        -
                    53          DI  w/18"     out                  5.94             2.97        52
                    54          EW  w/18"                          4.23             1.22        21
                    55          DI  w/1811    in and out           5.33             1.80        54
                    56          DI  w/l 5"    in, 18" out          5.63             2.08        55
                    57          YD  w/15"     out                  5.18             2.72        56
                    58          EW  w/l 5"                         3.98             0.99        19
                    59          DI                                    -               -         -
                                   15" in                          6.08             2.78        58
                                   1511 out                           -             2.74        -
                    60          DI w/15"      out                  6.08             3.13        59
                    61          15" into      40"x76"                 -             1.11        18
                    62          DI w/15"      in and out           5.31             1.13        61
                    63          DI w/15"      out                  5.28             1.38        62
                    64          1211 CP                               -             0.13        Lyons Creek
                    65          YD w/12"      in and out           3.73             1.50        64
                    66          1511                                  -             4.18        67






                                                                      5-2





                     TOPO SHEET NUMBER 5

                     NUMBER DESCRIPTION                             TOP             INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted


                     67          YD                                   -                -         -
                                   1511  in                         5.82              3.72       68
                                   1511  out                          -               3.75       -
                     68          YD                                   -                -         -
                                   15ts  in                         5.90              3.71       69
                                   1511  out                          -               3.61       -
                     69          YD                                   -                -         -
                                   1511  in                         5.64              3.12       70
                                   15"   out                          -               2.66
                     70          YD                                   -               -          -
                                   1511  in                         5.79              2.59       71
                                   1511  in                           -               3.74       -
                                   15"   out                                          2.44       -
                     71          YD                                   -                -         -
                                   1511  in                         4.82              2.32       9-208
                                   15"   out                          -               2.22       -
                     72          1211                                 -               4.59       73
                     73          YD w/12"      in and out           6.34              4.74       74
                     74          YD                                   -                -         -
                                   1211  in                         6.02              4.32       70
                                   1511  out                          -               3.99       -
                     75          1211                                 -               5.38       76
                     76          12 If                                -               5.31       9-217
                     77          B=2,    D=1.5, Z=1.33                -               8.80       17
                     78          B=2,    D=1.5, Z=1.33                -               7.70       9-248
                     79          B=3,    D=2, Z=2.25                  -               1.00       Roberts Creek
                     80          B=2,    0=5, Z=1                     -               2.69       79
                     81          3411x53"                             -               2.66       80
                     82          YD                                   -                -         -
                                   3411x53" in                      6.89              2.73       81
                                   3411x53" out                       -               2.49       -
                     83          YD                                   -                -         -
                                   34"x53" in                       7.01              2.87       82
                                   24" in                             -               2.97       -
                                   34"x53" out                        -               2.90       -
                     84          3411x53"                             -               2.82       83
                     85          B=2, D=5, Z=1.3                      -               2.90       84
                     86          B=2, D=2.5, Z=0.4                    -               4.01       85
                     87          3611                                 -               3.93       86
                     88          3611                                 -               3.71       87
                     89          B=2, D=3, Z=l                        -               4.51       88
                     90          3611                                 -               3.81       89
                     91          3611                                 -               4.10       90
                     92          B=2, D=3, Z=l                        -               4.55       91
                     93          B=3, D=2, Z=1.25                     -               5.42       92
                     94          B=2.5, D-1, Z=1.25                   -               6.05       93
                     95          1511                                 -               6.07       94
                     96          YD                                   -                -         -
                                   1511 in                            8.30            6.20       95
                                   1511 out                           -               6.15       -
                     97          1511                                                 6.50       96
                     98          B=l, D=0.5, Z=2                                      6.96       97




                                                                        5-3





                   TOPO SHEET NUMBER 5

                    NUMBER      DESCRIPTION                         TOP            INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                     99         B=2,     D=0.5, Z=6                                 6.55       100
                   100          B=2,     D=0.5, Z=6                                 6.03       This ditch does not drain
                   101          D=1,     Z=3                                        6.68       100
                   102          YD                                   -                -        -
                                  2411   in                         8.22            3.86       83
                                  2411   out                         -              3.81       -
                   103          D=1,     B=2.5, Z=1.3                               3.97       132
                   104          D=I,     B=l, Z=l                                     -        103
                   105          B=2,     D=0.5, Z=0.5                                          103
                   106          ES w/18"                                            5.82       92
                   107          DI                                                    -        -
                                  1511 in                           9.14            6.57       106
                                  1511   in                          -              6.46       -
                                  1811   out                         -              6.30       -
                   108          DI w/15"      out                   9.24            6.67       107
                   109          DI w/15"      out                   9.16            6.62       107
                   110          YD w/15"      out                   6.93            5.03       111
                   ill          MH                                   -                -        -
                                  15     in                          -                -        -
                                  18     out                        8.64            4.70       112
                   112          DI w/18"      in   and out          8.04            4.46       113
                   113          DI                                   -                -        -
                                  18" in                             -                -        -
                                  21 11 out                         7.90            4.38       114
                   114          YD w/21"      in and out            7.53            4.15       115
                   115          YD                                   -                -        -
                                  21     in                         6.63            4.06       116
                                  24     out                         -                -        -
                   116          DI                                   -                -        -
                                  24     in                         7.33            3.18       117
                                  2711   out                         -                -        -
                   117          MH w/27"      in and out            7.33            3.10       118
                   118          DI                                   -                -        -
                                  2711 in                           7.33            3.01       121
                                  30"    out                         -                -        -
                   119          YD w/18"      in and out            6.73            3.71       121
                   120          YD w/18"      out                   6.33            4.13       119
                   121          MH                                   -                -        -
                                  18"    in                          -                -        135
                                  3011   in                          -                -        -
                                  3618   out                         -                -        -
                   122          B=2,     D=3, Z=1.33                 -              2.69       123
                   123          B=6,     D=3, Z=2                    -              1.55       124
                   124          3011                                 -              1.58       125
                   125          30"                                  -              1.12       126
                   126          B=10,     D=3, Z=l                   -              -0.13      127
                   127          B=15,     D=3, Z=l                   -              0.47       Roberts Creek
                   128          1811                                 -              4.63       129
                   129          1811                                 -              4.13       126
                   130          B=3,     D=2, Z=2.25                 -              2.20       11/12/13
                   131          1211                                 -              2.36       65
                   132          ES 2411                              -              3.97       102





                   Rev. 7-20-92                                         5-4





                   TOPO SHEET NUMBER 5

                   NUMBER        DESCRIPTION                        TOP            INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                   133           B=1, D=1, Z=1.5                     -              7.47       134
                   134           B=l, D=1, Z=1.5                     -              4.91       85
                   135           3611                                -              2.69       122
                   136           1511                                -              5.77       137
                   137           1511                                -              5.38       138
                   138           12"                                 -              3.79       139
                   139           1211                                -              3.84       140
                   140           B=l, D=2, Z=0.5                     -              3.84       141
                   141           B=l, D=1.5, Z=l                     -              1.50       79
                   142           1211                                -              2.40       144
                   143           1211                                -              2.35       142
                   144           D=1.8, Z=1.9                        -              2.63       145
                   145           B=10, D=3.4,       Z=1.5            -              -0.19      Lyons Creek
                   146           D=1.4, Z=2.8                        -              2.69       147
                   147           D=1.2, Z=4                          -              1.53       Roberts Creek
                   148           1211                                -              3.02       143
                   149           1211                                -              3.13       148
                   150           1211                                -              3.83       149
                   151           1211                                -              3.73       150
                   152           DI w/15" out                       4.73            1.96       153
                   153           DI                                  -                -        -
                                  1511 in                           4.73            1.76       154
                                  18" out                            -                -        -
                   154           EW w/18"                           4.28            0.93       Roberts Creek
                   155           DI w/15"     out                   5.73            3.18       156
                   156           15"                                 -              3.07         Lyons Creek
                   157           DI w/15"     out                   5.23            2.23       158
                   158           1511                                -              0.43       159
                   159           B=10, Z=2, Z=2.5                    -              0.85       White House Cove
                   160           ES 15"                              -              2.86       161
                   161           DI                                  -                -        -
                                  1511 in                           5.31            2.21       162
                                  1811 out                           -                -        -
                   162           DI w/18"     in and out            5.31            2.02       163
                   163           ES 18"                              -              1.47       White House Cove
                   164           DI w/15"     out                   4.84            2.09       165
                   165           DI                                  -                -        -
                                  1511 in                           4.73            1.93       166
                                  1811 out                           -                -        -
                   166           DI w/18"     in and out            4.73            1.85       167
                   167           ES 18"                              -              1.59       White House Cove
                   168           1211                                -              2.75       169
                   169           1211                                -              1.95       170/172
                   170           1211                                -              1.59       171.
                   171           1211                                -              1.89       White House Cove
                   172           1211                                -              1.73       173
                   173           1211                                -              1.58       White House Cove
                   174           DI w/15" out                        -                -        175
                   175           1511                                -                -        Lyons Creek
                   176           DI w/18" out                        -                -        177
                   177           1811                                -                -        Lyons Creek
                   178           1281                                -                -        180




                                                                       5-5





                   TOPO SHEET NUMBER 5

                   NUMBER        DESCRIPTION                        TOP             INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                   179           1511                                  -                -       181
                   180           1211                                  -                -       182
                   181           1511                                  -                -       183
                   182           1211                                  -                -       184
                   183           1511                                  -                -       185
                   184           1211                                  -                -       Canal to Lyons Creek
                   185           1511                                  -                -       Canal to Lyons Creek
                   186           1211                                  -                -       187
                   187           1211                                  -                -       Canal to Lyons Creek
                   188           12'1                                  -                -       189
                   189           12"                                   -                -       Canal to Lyons Creek
                   190           1511                                  -                -       191
                   191           1511                                  -                -       Lyons Creek
                   192           1211                                  -                -       193
                   193           1211                                  -                -       Lyons Creek
                   194           1511                                  -                -       195
                   195           1511                                  -                -       196
                   196           1511                                  -                -       197
                   197           1511                                  -                -       198
                   198           EW w/12"                              -                -       199
                   199           12"                                   -                -       Canal to Lyons Creek
                   200           1511                                  -                -       196
                   201           15'1                                  -                -       200
                   202           1211                                  -                -       203
                   203           1211                                  -                -       Canal to Lyons Creek
                   204           1511                                  -                -       205
                   205           15#1                                  -                -       Canal to Lyons Creek
                   206           DI w/15"      out                     -                -       207
                   207           1511                                  -                -       White House Cove
                   208           12'1                                  -             8.01       209
                   209           1211                                  -             7.24       78
                   210           YD  w/l 5"    out                  7.64             3.69       211
                   211           DI  w/15"     in and out           8.56             3.33       212
                   212           DI  w/15"     in and out           8.60             3.22       214
                   213           YD  w/18"     out                  7.83             2.85       214
                   214           MH                                    -                -       -
                                  15 in                             8.16             2.42       4-89
                                  1811 in                              -                -       -
                                  19"x3O"      out                     -                -       -
                   215           YD w/15"      out                  7.00             2.90       216
                   216           YD w/15"      in and out           7.00             2.56       4-90
                   217           DI  w/13"xl7" CMP out                 -                -       218
                   218           DI                                    -                -       -
                                  13"x]7" CMP        in                -                -       219
                                  15" out                              -                -       -
                   219           1511                                  -                -       Roberts Creek
                   220           1811                                  -                -       221
                   221           1811                                  -                -       224
                   222           DI w/15" out                          -                -       223
                   223           1 5's                                 -                -       224







                                                                       5-6







               TOPO SHEET NUMBER 5

               NUMBER      DESCRIPTION                 TOP          INVERT DOWNSTREAM NUMBER
                           All pipes are RCP
                           unless otherwise noted

               224         1811                                               225
               225         1811                                               Roberts Creek
               226         ES 1211                                            227
               227         DI                                                 -
                            12 in                        -            -       228
                            1311x17" CMP out             -            -       -
               228         DI                            -            -       -
                            1311x17" CMP in              -            -       229
                            1811 out                     -            -       -
               229         ES 18"                        -            -       White House Cove
















































                                                         5-7





                                                      POQUOSON DRAINAGE STUDY



                  TOPO SHEET NUMBER 6

                  NUMBER        DESCRIPTION                        TOP            INVERT      DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                     1          1511                                -              2.12       2
                     2          YD  w/15" in and out               3.61              -        3
                     3          15                                  -              1.04       6
                     4          18                                  -              0.74       5
                     5          18                                  -              0.74       6
                     6          2411                                -              0.64       7
                     7          2411                                -                -        Floyds Bay
                     8          DI w/15" out                       4.85            2.29       9
                     9          DI                                  -                -        -
                                 1511 in                           4.85            2.17       10
                                 1811 out                           -                -        -
                  10            1811                                -              1.33       Floyds Bay
                  11            DI w/15"      out                  5.00            2.78       12
                  12            ES 1511                             -              2.56       Bennett Creek
                  13            DI  w/18"     out                  4.83            2.53       14
                  14            18                                  -              1.53       White House Cove
                  15            DI w/15"      out                  4.85            2.29       16
                  16            DI                                  -                -        -
                                 1511 in                           4.85            2.17       17
                                 1811 out                           -                -        -
                  17            1811                                -              1.91       Bennett Creek
                  18            1511                                -                -        19
                  19            1511                                -                -        White House Cove
                  20            1211                                -                -        21
                  21            1211                                -                -        @ #19 enters White House Cove





























                                                                       6-1




                                                       POQUOSON DRAINGE STUDY



                  TOPO SHEET NUMBER 8

                  NUMBER        DESCRIPTION                        TOP                 INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                       I        B=4.5, D=2, Z=1.1                                      1.68      103
                       2        B=4,    D=3, Z=l                                       2.2-      1
                       3        B=l,    D=2, Z=2                                       3.68      2
                       4        2111                                                   3.69      3
                       5        YD                                                     -         -
                                    2111 in                        5.74                3.75      4
                                    1511 in                           -                4.03      -
                                    2111 out                          -                3.70      -
                       6        1511                                  -                4.05      5
                       7        DI                                    -                -         -
                                    1811 in                        7.25                4.16      6
                                    2111 out                          -                -         -
                       8        MH                                    -                -         -
                                    1511 in                        7.50                4.36      7
                                    18" in  and out                   -                -         -
                       9        1511                                  -                4.38      8
                    10          EW w/18"                           6.50                4.40      8
                    11          D=l, B=1.5, Z=l                       -                4.41      10
                    12          EW  w/l 5"                         7.65                5.65      11
                    13          EW  w/15"                          8.34                6.34      12
                    14          EW  w/l 8 11                       7.50                5.00      13
                    15          EW  w/18"                          8.50                6.50      14
                    16          ES  12"                               -                7.16      17
                    17          ES  1211                              -                7.10      15
                    18          DI  w/12"     out                  8.87                6.50      19
                    19          DI  w/12"     in and out           8.81                5.97      20
                    20          EW  w/12"                          7.50                5.00      13
                    21          ES  1511                              -                4.13      22
                    22          DI  w/15"     in and out           6.27                3.77      23
                    23          DI  w/15"     in and out              -                -         24
                    24          1511                                  -                2.76      2
                    25          2411                                  -                3.80      26
                    26          2411                                  -                3.87      27
                    27          D=1.4, Z=2.5                          -                3.98      28
                    28          B=2, D=2, Z=l                         -                -         I
                    29          3611                                  -                0.34      Lambs Creek
                    30          DI w/36" in and out                6.23                0.54      29
                    31          DI w/36" in       and out          6.23                0.64      30
                    32          YD                                    -                -         -
                                    30" in                         5.73                1.78      31
                                    3611 out                          -                1.28      31
                    33          YD                                    -                -         -
                                    1511 in                        6.23                2.17      32
                                    30" out                           -                1.95      -
                    34          MH w/15"      in and out                               -         33
                    35          YD w/15"      in and out              -                3.33      34
                    36          DI w/15"      in and out           6.23                3.63      35
                    37          DI w/15"      out                  6.23                3.73      36
                    38          3011                                  -                -         33




                                                                      8-1





                    TOPO SHEET NUMBER 8

                    NUMBER DESCRIPTION                             TOP            INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted


                    39          YD                                   -                -        -
                                   1511 in                           -                -        38
                                   30" out                           -                -        -
                    40          YD                                   -                -        39
                    41          YD                                   -                -        40
                    42          2711                                 -                -        41
                    43          YD w/18"      in                   7.23               -        41
                    44          1811                                 -             4.58        43
                    45          1$11                                 -             4.80        44
                    46          1811                                 -             4.73        45
                    47          DI                                   -                -        40
                    48          DI                                   -                -        47
                    49          DI                                   -                -        48
                    50          YD   w/18" in and out              7.22               -        49
                    51          YD                                   -                -        -
                                   15H in                          6.48            4.24        50
                                   18" in   and out                  -                -        -
                    52          ES 1511                                            4.74        51
                    53          YD                                   -                -        -
                                   1511 in                         7.23            4.93        51
                                   18" in   and out                  -             4.68        -
                    54          ES   1811                            -             4.70        53
                    55          DI   w/15" in and        out       7.93            5.26        53
                    56          DI   w/15"    out                  7.93            5.33        55
                    57          DI   w/15"    in and     out       6.73            .3.53       39
                    58          DI   w/15"    out                  6.73            3.73        57
                    59          ES   15"                             -             5.55        60
                    60          YD                                   -                -        -
                                   1511 in                         7.23            5.41        61
                                   18" out                           -             5.16        -
                    61          DI w/18"      in and out           7.44               -        62
                    62          DI w/18"      in and out           7.44               -        63
                    63          1811                                 -             4.57        33
                    64          ES 15                                -             5.25        65
                    65          YD                                   -                -        -
                                   2-1511 in                         -             5  04       67
                                   1511 out                          -                         -
                    66          ES 15"                               -             5.08        65
                    67          DI   It                              -                -        -
                                   15  in                          7.28            4.64        68
                                   15" out                           -             4.39        -
                    68          DI                                   -                -        -
                                   1511 in                         7.28            4.31        69
                                   1811 out                          -                -        -
                    69          YD                                   -                -        -
                                   2-1811 in                       6.73            3.93        73
                                   24" out                           -                -        -
                    70          ES 1811                              -             3.98        69
                    71          B=1.5, D=3, Z=1.1                    -                -        70
                    72          B=l , D=l .5, Z=l .7                 -                -        71
                    73          ES 24'1                              -             3.53        74
                    74          B=3, D=5, Z=.6                       -                -        75





                                                                       8-2





                     TOPO SHEET NUMBER 8

                     NUMBER      DESCRIPTION                         TOP             INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                     75          B=2, D=6, Z=.8                                         -        76
                     76          ES   24"                             -               2.00       77
                     77          MH   w/24" in and out               7.20             1.93       78
                     78          ES   2411                            -               1.40       Lambs Creek
                     79          ES   18"                             -               1.93       Lambs Creek
                     80          DI   w/18" in and out               5.05             2.05       79
                     81          DI   w/18" out                      5.05             2.20       80
                     82          -                                    -                -         83
                     83          2411                                 -               4.93       84
                     84          2411                                 -               4.65       85
                     85          D=2.75, Z=l                          -               4.80       42
                     86          ES 1511                              -               3.93       87
                     87          DI w/15" in        and out          6.33             3.73       88
                     88          DI   w/15"    in   and out          6.33             3.53       89
                     89          1511                                 -               3.13       Lambs Creek
                     90          DI   w/15"    out                   6.18             3.46       91
                     91          DI   w/l 5"   in and out            6.18             3.38       92
                     92          DI   w/15"    in and out            6.28             3.24       93
                     93          ES   1511                            -               2.91       Lambs Creek
                     94          DI   w/15"    out                   6.18             3.58       95
                     95          DI   w/l 5"   in and out            6.18             3.38       96
                     96          DI   w/15"    in and out            6.24             3.24       97
                     97          ES   15"                             -               2.73       Lambs Creek
                     98          DI   w/15"    out                   6.73             3.73       99
                     99          1511                                 -               3.53       Lambs Creek
                   100           DI w/15"      out                   6.73             3.73       101
                   101           DI w/15"      in and out            6.73             3.63       102
                   102           1511                                 -               3.53       Lambs Creek
                   103           B=9.5, D=3.9, Z=1.2                  -               1.21       104
                   104           3611                                 -               1.28       105
                   105           3611                                 -              -0.08       Lambs Creek





























                                                                       8-3





                                                         POQUOSON DRAINAGE STUDY




                   TOPO SHEET NUMBER 9

                   NUMBER        DESCRIPTION                       TOP             INVERT        DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                        I        DI w/18" in and out               6.82             3.98         -
                        2        ES-141 18"                           -             4.03         1
                        3        YD w/18" in       and out         6.21             4.30         4
                        4        1811                                 -             4.90         Sheet 14-267
                        5        YD                                6.31                 -
                                  18                                  -                 -
                                  24" out                             -             4.37         3
                        6        1811                                 -             4.62         5
                        7        B=3, D=4, Z=.17                      -             1.38         9
                        8        12  11                               -             4.32         7
                        9        B=3.5, D=4, Z=.71                    -             1.32         10
                     10          24"                                  -                 -        11
                     11          2411                                 -                 -        12
                     12          B=5, D=3, Z=.83                      -             1.28         243
                     13          DI  w/24" in and         out      6.23             1.97         256
                     14          12                                   -             4.11         15
                     15          12                                   -             4.02         18
                     16          1211                                 -             3.99         17
                     17          12"                                  -             3.99         18
                     18          B=2, D=1.2, Z=2.5ï¿½                   -             4.13         19
                     19          B=2, D=l, Z=1.5                      -             3.53         20
                     20          B=3, D=2.4, Z=1.45ï¿½                  -             2.93         21
                     21          B=4, D=4, Z=.75                      -             2.40         22
                     22          EW w/24"                             -             2.26         23
                     23          YD                                4.90             1.96         24
                                  2-24 in                             -                 -        -
                                  1211 in                             -                 -        -
                                  36" CMP out
                     24          YD w/36"     CMP in and out          -                 -        25
                     25          YD w/36"     CMP in and out          -                 -        28
                     26          EW-1 w/ 30"                          -             6.13         101
                     27          EW-1 w/24"                           -             6.70         102
                     28          EW w/36" CMP                         -                 -        White House Cove
                     29          EW w/24"                             -             2.76         23
                     30          EW w/24"                             -             2.83         29
                     31          24"                                  -             2.69         30
                     32          1811                                 -             2.78         31
                     33          YD                                   -             5.38         -
                                  1211 in                             -             3.61         -
                                  18" in    and out                   -             3.35         32
                     34          YD w/18" in and         out       5.36             3.47         -
                                                                      -             3.65         33
                     35          YD w/12"     out                  5.58             4.28         33
                     36          1811                                 -                 -        34
                     37          2411                                 -                 -        23
                     38          1211                                 -             3.07         22
                     39          1211                                 -             4.72         41
                     40          1211                                 -             4.08         41





                   Rev.    7-20-92                                     9-1





                  TOPO SHEET NUMBER 9

                  NUMBER        DESCRIPTION                        TOP            INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                    41          MH                                 6.15                -       -
                                  2-12" in                           -              4.09       -
                                                                                    3.97       -
                                  12" out                                           3.85       38
                    42          12"    CP                            -              4.46       19
                    43          1211                                 -              6.63       44
                    44          1211                                 -              6.65       6-428
                    45          1511                                 -              6.72       46
                    46          15'                                                 6.63       6-248
                    47          B=2, D=1.5, Z=.33                                      -       43  and 45
                    48          1211 CP                              -                 -       47
                    49          1211 CP                              -                 -       50
                    50          1211   CP                            -                 -       51
                    51          B=3, D=3, Z=.17                      -                 -       57
                    52          EW w/24"                             -              1.77       53
                    53          YD w/24" in and         out        4.80             1.84       54
                    54          YD w/24"      in and    out        4.29             1.84       56
                    55          1211                                 -                 -       54
                    56          2411                                 -                 -       Canal to White House Cove
                    57          B=3, D=2, Z=.25                      -                 -       52
                    58          DI w/34"x22" in         and out      -              6.27       278
                    59          DI w/34"x22" in                      -              5.97
                                                     out             -              5.77       62
                    60          DI  w/34N22", 18" in                 -                 -       -
                                  3411x22" out                       -              6.10       61
                    61          3411x22"                             -              5.93       65
                    62          MH                                   -                 -       -
                                  3411x22" in     and out          9.80             5.77       63
                                  1511 in                            -                 -       -
                    63          34"x22"                              -              5.63       246
                    64          4211x2711                            -              5.30       246
                    65          4211x27"                             -              5.70       64
                    66          24" CP                               -                 -       246
                    67          24" CP                               -                 -       246
                    68          2411 CP                              -                 -       69
                    69          B=3, D=5, Z=1.2                      -                 -       70
                    70          B=5, D=5, Z=1.3                      -                 -       71
                    71          B=3.5, D=5, Z=1.25                   -                 -       72
                    72          B=3, D=8, Z=.75                      -                 -       73
                    73          B=4, D=9, Z-.89                      -                 -       75
                    74          1211 CP                              -                 -       75
                    75          B=4, D=6, Z=1.58                     -              4.18       76
                    76          B=2, D=5, Z=2                        -              3.98       77
                    77          EW w/42"                           7.53             3.33       78
                    78          EW w/42"                           7.46             3.26       79
                    79          B=2, D=6, Z=1.75                     -              3.23       80
                    80          B=3, D=9, Z=.83                      -                -        82
                    81          void
                    82          B=3, D=5, Z=1.6                      -                -        83
                    83          ES 65"x4O" CMP                       -              2.13       84
                    84          ES 65N40" CMP                        -              2.04       86
                    85          ES-1 12'1                            -              1.89       86





                                                                      9-2





                    TOPO SHEET NUMBER 9

                    NUMBER          DESCRIPTION                      TOP              INVERT DOWNSTREAM NUMBER
                                    All pipes are RCP
                                    unless otherwise noted

                    86              B=8, D=2.61, Z=1.5ï¿½              -                -        87
                    87              EW w/42"x3O                      4.21             -0.06    88
                    88              EW w/42"x3O                      4.16             -0-10    White House Cove
                    89              ES 2411                          -                2.07     86
                    90              DI                               -                -        -
                                    24" in and out                   6.98             2.25     89
                                    1211 in                          -                3.60     -
                    91              DI w/12" out                     6.98             3.73     90
                    92              MH w/24" in and     out          7.83             2.96     9-0
                    93              MH                               -                -        -
                                    1211 in (stub)                   8.33             6.23     92
                                    24" in and out                   -                3.15     92
                    94              EW w/24"                         -                3.25     93
                    95              B=3, D=2.67ï¿½, Z=1.69ï¿½            -                -        86
                    96              1811                             -                2.53     95
                    97              1811                             -                3.28     96
                    98              B=4, D=2, Z=I (PG-5)             -                -        79
                    99              JB w/30" twin                    -                -        -
                                    in and out                       -                2.81     98
                  100               Double JB                        -                -        -
                                    2711 and 30"     in              -                3.03     99
                                    2111 in                          -                4.81     -
                                    3011 out                         -                3.03     -
                  101               JB w/30" in and     out          -                3.67     100
                  102               JB                               -                -        -
                                    2411 in                          -                4.65     100
                                    27" out                          -                4.54     100
                  103               JB                               -                -        -
                                    2411 in                          -                4.97     102
                                    2411 out                         -                4.92     -
                  104               EW w/24"                         -                5.05     103
                  105               EW w/15"                         7.20             4.20     75
                  106               MH w/15"                         9.43             4.63     105
                  107               DI w/I 51'                       7.10             4.96     106
                  108               DI w/I 5"                        8.71             5.44     107
                  109               EW w/15"                         -                5.73     108
                  110               12                               -                7.66     111
                  III               YD                               -                -        -
                                    12" in                           -                5.98     112
                                    1811 out                         -                -        -
                  112               MH w/2-18" in, 18" out           9.01             5.49     114
                  113               ES-1 1811                        -                5.59     112
                  114               DI                               -                -        -
                                    12" and  18" in                  8.03             5.24     116
                                    18" out                          -                -        -
                  115               DI w/12" out                     7.78             5.53     114
                  116               DI w/18" in and    out           7.96             5.07     117
                  117               MH w/2-1811 in and out           8.18             4.99     249
                  118               DI w/12" in and out              7.93             5.66     272
                  119               DI w/12" out                     7.73             5.78     118
                  120               DI w1l 2" out                    8.23             6.05     253
                  121               DI w/12" out                     8.48             6.40     252
                  122               DI w/15" out                     8.05             5.32     123




                                                                      9-3





                   TOPO SHEET NUMBER 9

                   NUMBER        DESCRIPTION                        TOP            INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted


                   123           DI                                   -                -        -
                                   15H in                           8.63             5.11       124
                                   1811 out                           -              9.86       -
                   124           EW-1 18H                           7.23             4.73       109
                   125           DI                                   -                -        -
                                   2-1211 in                        8.84             5.23       126
                                   1511 out                           -              4.98       -
                                            11
                   126           EW-1 15                            7.10             4.85       109
                   127           DI w/12"     out                   7.85             5.16       128
                   128           DI                                   -                -        -
                                   1211 in                          7.93             5.00       130
                                   1811 out                           -              4.50       0
                   129           DI w/21"     out                   7.65             4.23       130
                   130           DI                                   -                -        -
                                   1811 in                          7.93             4.25       131
                                   2111 in                            -              4.01       -
                                   2711 out                           -              3.50       -
                   131           YD-l   w/27" in and        out     6.85             3.37       132
                   132           EW-1   2711                        7.05             3.29       109
                   133           DI w/2-21" out                     8.80             5.53       134
                   134           DI w/2-21" in and          out     8.80             5.19       135
                   135           EW-1 21 11                           -              4.58       104
                   136           YD-1 15" out                       8.57             6.30       137
                   137           DI                                   -                -        -
                                   1511 in                          8.53             5.89       138
                                   1411x23"   out                     -                -        -
                   138           DI                                   -                -        -
                                   1411x23"   in                    8.53             5.73       139
                                   1811 out                                            -        -
                   139           EW-1 18"                                            5.26       104
                   140           1811                                                6.57       141
                   141           1811                                 -              6.50       104
                   142           YD-1 1511    out                   8.82             7.00       143
                   143           DI                                   -                -        -
                                   2-1511 in                        8.93             6.35       144
                                   1411x23" out                       -                -        -
                   144           DI                                   -                -        -
                                   14"x23"    in                    8.93             6.23       145
                                   1811 out                           -                -        -
                   145           EW-1 1811                            -              5.05       104
                   146           1511                                 -              5.80       147
                   147           15'1                                 -              5.70       133
                   148           1411x23"   CP                        -              6.39       133
                   149           EW 2411                              -              3.54       94
                   150           DI w/14"x23" out                   8.41             6.51       148
                   151           DI                                   -                -        -
                                   1411x23" in and out              9.11             6.65       133
                   152           DI                                   -                -        -
                                   15" in                           9.11             6.76       151
                                   1411x23" out                       -                -        -
                   153,          DI w/15" out                       8.82             6.88       152
                   154           DI w/12" out                       6.98             4.70       155




                                                                      9-4





                   TOPO SHEET NUMBER 9

                   NUMBER        DESCRIPTION                        TOP              INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                   155           DI w/12"      in, 15" out          7.01             4.71        156
                   156           EW-1 1511                             -             4.44        165
                   157           DI w/12"      out                  6.93             4.63        158
                   158           EW-1 1211                             -             4.53        165
                   159           DI w112"      out                  6.85             4.53        160
                   160           EW-1 1211                             -             4.44        165
                   161           DI w/12"      out                  7.09             4.38        162
                   162           EW-1 1211                             -             4.26        165
                   163           DI                                    -               -         -
                                  12" and      21 "  in             7.53             3.76        149
                                  2411 out                             -               -         -
                   164           DI w/12"      out                  7.48             3.84        163
                   165           EW-2    21                                          3.89        163
                   166           ES-1    12"                                         6.23        167
                   167           D I                                   -               -         -
                                  1211   in                         7.45             5.23        168
                                  1511   out                           -             4.40        -
                   168           EW-1    15"                                         4.30        165
                   169           YD                                    -               -         -
                                  12     in                         4.25             1.21        171
                                  1211   in                            -             1.76        -
                                  2491   out                                         1.20        -
                   170           YD                                    -               -         -
                                  1211   in                         4.37             1.47        169
                                  1211   out                           -             1.46        -
                   171           2411                                                1.07        White House Cove
                   172           YD                                    -               -         -
                                  1211   in                         4.31             1.82        170
                                  1211   out                           -             1.77        -
                   173           EW 1211                               -             1.59        172
                   174           EW w/twin       1811                  -             1.79        173
                   175           EW  w/twin      18"                   -             2.04        Roadside Ditch to White House Cove
                   176           JB  w/4-18" in       and out       4.95             2.38        175/174
                   177           1811 CP                               -             2.88        176
                   178           B=3.5, D=4, Z=.56,                                    -         242
                   179           B=4, D=4, Z=.63                       -               -         178
                   180           B=3, D=4, Z=.5                        -               -         179
                   181           B=4, D=5, Z=.4                        -               -         180
                   182           2411 CP                               -               -         181
                   183           B=4, D=3.5, Z=.57                     -                         182
                   184           B=3, D=3.5, Z=.57                     -               -         183
                   185           1811                                  -             2.80        184
                   186           1811                                  -             3.33        185
                   187           42"x27"                               -             3.73        186
                   188           DI w/30" in                        7.23             3.83        187
                                  4211x27" out                         -               -         -
                   189           ES-1 30'1                             -             4.19        188
                   190           D=3, B=2, Z=2                         -             4.61        189
                   191           PG-5 D=l, W=2, Z=l                    -             5.44        190
                   192           EW w/twin 18"                         -             5.45        191
                   193           EW w/twin 18"                         -             5.63        192
                   194           DI w/2-12" out                     7.03             4.48        195
                   195           DI w12-12" in and          out     7.03             4.34        281
                   196           2-12                                                4.06        184
                   197           B=2, D=3, Z=.17                                       -         190

                   Rev. 7-20-92                                        9-5





                  TOPO SHEET NUMBER 9

                  NUMBER        DESCRIPTION                        TOP             INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                  198           Earth Swale                          -                         197
                  199           Earth Swale                          -                -        198
                  200           B=2.5, D=1.5, Z=.5                   -              6.03       190
                  201           1.5' Paved Swale                     -                -        200
                  202           YD w/12" out                       8.39             6.30       203
                  203           YD                                 9.04             6.40       290
                                  8" in                              -              6.54       -
                                  1511 in                            -              6.54       -
                                  1211 out                           -              6.33       -
                  204           1511                                 -                -        203
                  205           1211                                 -              6.00       5-17
                  206           DI w/12"      out                  8.90             6.38       205
                  207           B=2, D=2, Z=1.75                     -              2.05       5-159
                  208           YD                                   -                -        -
                                  24" in                           4.46             1.64       207
                                  1511 in                            -              1.81       -
                  209           ES 2161                                             2.62       82
                  210           2411                                 -              1.75       208
                  211           DI w/15" out                       5.34             2.38       222
                  212           void
                  213           B=4, D=2, Z=1                        -              2.62       210
                  214           B=4, D=2, Z=l                        -              3.54       213
                  215           B=3, D=3, Z=.58                      -              3.66       214
                  216           B=2.5, D=2.5, Z=.9                   -              4.18       215
                  217           B=1.5., D=3, Z=35                    -              4.66       216
                  218           DI w/12" out                       5.45             3.01       219
                  219           DI w/12" in, 15 out                5.45             2.93       220
                  220           ES-1 15"                             -              2.71       213
                  221           ES 1811                              -              5.02       117
                  222           1518                                 -                -        210
                  223           12'a                                 -              6.45       202
                  224           1211                                 -              6.61       223
                  225           12'1                                 -              6.73       226
                  226           1211                                 -              6.47       193
                  227           DI   w/15"    in and out           8.95             6.16       193
                  228           DI   w/15"    out                  9.09             6.36       227
                  229           DI   w/15"    out                  8.91             6.26       230
                  230           DI   w/15"    in and out           8.87             6.10       190
                  231           DI   w1l 2"   out                  5.53             2.23       232
                  232           DI   w/12"    in and out           5.77             2.15       85
                  233           DI   w/1211   in and out           5.91             3.58       86
                  234           DI   w/12"    out                  5.91             3.71       233
                  235           DI                                   -                -        -
                                  2-12" in                         5.70             2.84       209
                                  2111 out                           -                -        -
                  236           DI                                   -                -        -
                                  12 in                            5.73             3.45       235
                                  2-1211 out                         -                -        -
                  237           YD w/12" in and out                5.29             3.56       236
                  238           YD w112" in and out                5.43             3.79       237
                  239           DI w/12" in and out                7.52             4.17       238
                  240           DI w/12" in and out                6.53             4.53       239




                  Rev. 7-20-92                                        9-6





                   TOPO SHEET NUMBER 9

                   NUMBER       DESCRIPTION                          TOP            INVERT     DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                   241          YD w/12" out                         6.68           4.96       240
                   242          1811                                 -              2.24       176
                   243          B=4, D=4, Z=1.13                     -                -        10-6
                   244          1211                                 -              3.95       16/14
                   245          1211                                 -              3.91       244
                   246          B=5, D=4, Z=1.38                     -                -        69
                   247          1811                                 -              5.43       5-17
                   248          1811                                 -              5.55       247
                   249          1811                                 -              5.35       98
                   250          YD-1 15" out                         8.27           6.85       143
                   251          1211                                 -              4.53       8
                   252          1211                                 -              6.33       221
                   253          1211                                 -              5.93       221
                   254          1211                                 -              4.38       42
                   255          DI                                   -                -        -
                                  1811 in                            6.23           2.33       13
                                  2411 out                           -              2.09       -
                   256          EW-1 2411                            -              1.73       10-6
                   257          DI   w/18"    in and out             6.23           2.35       255
                   258          DI   w/18"    in and out             6.23           2.54       257
                   259          DI   w/18"    in  and   out          6.23           2.56       258
                   260          DI   w/18"    in  and   out          6.23           2.75       259
                   261          DI   w/18"    in  and   out          6.23           2.77       260
                   262          DI                                   -                -        -
                                  1511 in                            6.23           3.18       261
                                  18" out                            -              2.96       -
                   263          DI w/15"      in  and   out          6.23           3.60       262
                   264          DI w/1511     in  and   out          6.23           3.68       263
                   265          DI   w/l 5"   out                    6.73           3.91       264
                   266          1811                                 -              2.13       7
                   267          DI w/18"      in and    out          -                -        266
                   268          1811                                 -              2.73       267
                   269          void
                   270          void
                   271          ES-1 15"                             -              4.00       7
                   272          1211                                 -              5.54       221
                   273          YD w/12"      out                    6.25           4.52       14-338
                   274          YD w/1211     out                    6.25           3.82       15-181
                   275          ES-1 15fl                            -              4.16       271
                   276          DI w/15"      out                    8.40           6.00       62
                   277          DI w/18"      out                    8.30           6.20       60
                   278          DI w/15"      out                    8.40           6.70       58
                   279          1511                                 -              6.73       280
                   280          15"                                  -              6.51       193
                   281          DI w/18"      out                    -                -        182
                   282          DI w/18"      out                    -                -        283
                   283          1811                                 -                -        177
                   284          1211                                 -                -        Canal
                   285          1211                                 -                -        284
                   286          12'1                                 -                -        287
                   287          1211                                 -                -        288
                   288          1511                                 -                -        289
                   289          1511                                 -                -        Canal to White House Cove
                   290          1211                                 -              7.95       5-17


                   Rev. 7-20-92                                      9-7





                                                        POQUOSON DRAINAGE STUDY




                   TOPO SHEET NUMBER 10

                   NUMBER        DESCRIPTION                         TOP             INVERT       DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                       I         B=8, D=3.5, Z=.86                                                15-106
                       2         B=6, D=3, Z=.83                                                  1
                       3         ES                                    -                -         2
                       4         DI  w/12" out                       6.23             3.58        3
                       5         YD                                                               3
                       6         EW                                    -                -         5
                       7         DI  w/15" out                       6.23             3.23        8
                       8         DI                                    -                -         -
                                    1511 in                          6.23             2.98        9
                                    1811 out                           -              2.73        -
                       9         DI w/18"      in   and out          6.23             2.71        10
                    10           DI w/18"      in   and out          6.23             2.52        11
                    11           DI  w/18"     in   and out          6.23             2.50        9-255
                    12           B=3, D=3.5,        Z=1.5              -                -         2
                    13           1211                                  -              2.55t       12
                    14           DI  w112" out                       6.41             2.58        13
                    15           ES  18"                               -              2.90        12
                    16           DI  w/l 8"    in and out            7.18             2.95        15
                    17           DI  w/l 8"    in and out            6.85             3.09        16
                    18           DI                                    -                -         -
                                    1211 in                          6.68             3.16        17
                                    18"  in  and out                   -                -         -
                    19           DI                                    -                -         -
                                    15"  in                          6.75             3.29        18
                                    1811  out                          -                -         -
                    20           DI                                    -                -         -
                                    2-12ij in                        6.75             3.30        19
                                    15" out                            -                -         -
                    21           DI  w/12" in and out                7.13             3.56        20
                    22           DI  w/l 2"    out                   7.13             3.57        21
                    23           DI  w/12"     out                   7.80             3.45        20
                    24           DI  w/12"     out                   7.15             3.44        18
                    25           ES  18"                               -              3.26        12
                    26           YD                                    -                -         -
                                    1211 in                          6.00             3.51        25
                                    1811 out                           -                -         -
                    27           DI w/12"      out                   7.18             3.70        26
                    28           B=3.5, D=5, Z=l                       -                -         2
                    29           B=3, D=4, Z=1.25                      -                          28
                    30           B=1.5, D=l, Z=1.75                    -                -         29
                    31           B=.5, D=1.5, Z=.83                    -              4.10        30
                    32           B=2, D=5, Z=1.2                       -                -         12
                    33           B=2, D=3, Z=2                         -                -         32
                    34           1511                                  -                -         33
                    35           YD w/15" in and          out          -                -         34
                    36           15'1                                  -                -         35
                    37           B=1.5, D=3.5, Z=1.6                   -                -         36
                    38           1211                                  -              5.38        39





                                                                       10-1





                    TOPO SHEET NUMBER 10

                    NUMBER       DESCRIPTION                        TOP            INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                                    11                                -
                    39           12                                                  5.03      73
                    40           1511                                                3.29      41
                    41           1511                                                3.38      73
                    42           B=3, D=3.5, Z=l                      -               -        15-196
                    43           B=2,   D=2, Z=1                      -                        42
                    44           B=2,   D=l Z=l                       -               -        43
                    45           1211                                 -              4.47      46
                    46
                                 1211                                                4.35      47
                    47           B=2.5, D=3.5,        Z=1.14                          -        48
                    48           3611                                                1.42      49
                    49           EW w/36"                                            1.60      58
                    50           EW w/18"                                            3.83      51
                    51           EW  w/18"                                           3.24      58
                    52           1211                                                 -        47
                    53           YD w/12"      out                  5.88             4.21      52
                    54           YD w/18"      out                  5.62             3.71      55
                    55           1811                                 -              2.65      56
                    56           181t                                 -              3.19      57
                    57           1811                                 -              2.11      58
                    58           B=2, D=3, Z=1.83                     -               -        59
                    59           B=2, D=3, Z=l                        -               -        60
                    60           B=5, D=3, Z=1.16                     -               -        61
                    61           B=13, D=2, Z=3                       -               -        Floyds Bay
                    62           1211                                 -              3.95      63
                    63           YD w/12" in and         out        5.14             2.89      64
                    64           12                                                  2.96      65
                    65           1211                                                3.17      66
                    66           1211                                                3.49      67
                    67           1811                                 -              2.76      68
                    68           DI w/18" in and out                4.63             2.60      69
                    69           1861                                 -               -        74
                    70           1211                                 -               -        71
                    71           DI w112" in and out                5.16              -        72
                    72           End pipe                             -               -        73
                    73           1811                                 -              2.86      162
                    74           B=2, D=4, Z=l                        -               -        75 -
                    75           3011                                 -               -        76
                    76           YD w/30" in and out                  -               -        77
                    77           YD w/30"     in and out              -               -        78
                    78           ES 30'1                              -               -        79
                    79           B=7, D=2, Z=3.25                     -               -        Floyds Bay
                    80           EW w/18"                             -              3.66      75
                    81           EW w/18"                             -              4.24      80
                    82           18"                                  -              3.97      83
                    83           1811                                 -              3.51      Ditch to Floyds Bay
                    84           1211                                 -               -        Ditch to Floyds Bay
                    85           1211                                 -              4.49      84
                    86           EW w/12"                             -              4.50      85
                    87           EW w/12"                             -              4.43      86
                    88           EW  w/l 8"                           -              3.98      89
                    89           EW  w/18"                            -              3.90      unknown
                    90           EW  w/12"                            -              3.95      91





                                                                      10-2





                     TOPO SHEET NUMBER 10

                     NUMBER      DESCRIPTION                           TOP              INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                     91          EW w/12"                              -                3.90     92
                     92          1511                                  -                -        93
                     93          1511                                  -                -        100
                     94          EW w/12"                              -                4.35     195
                     95          EW w/12"                              -                4.02     100
                     96          1211                                  -                -        97
                     97          YD w/12"      in and out              -                         99
                     98          12                                                              97
                     99          12                                                              100
                   100           B=311   D=3.5, Z=3                    -                -        101
                   101           1811                                  -                0.70     102
                   102           1811                                  -                0.18     103
                   103           3011                                  -                -        104
                   104           3011                                  -                -        Floyds Bay
                   105           DI w/1-5" out                         5.50             2.87     106
                   106           DI                                    -                -        -
                                     15  in                            5.50             2.79     107
                                     1811 out                          -                -        -
                   107           DI                                    -                -        -
                                     15" and   18" in                  5.25             2.31     108
                                     2411 out                          -                -        -
                   108           YD                                    -                -        -
                                     1811 and  24" in                  5.15             2.15     109
                                     27" out                           -                -        -
                   109           DI                                    -                -        -
                                     2711 i:n                          5.22             1.95     110
                                     2211x34"  out                     -                -        -
                   110           DI                                    -                -
                                     2211x34"  in                      5.26             1.86     Ill
                                     3011 out                          -                -        -
                   111           YD w/30"      in  and out             5.03             1.67     112
                   112           EW  w/30"                             5.15             1.65     113
                   113           18                                    -                1.20     114
                   114           1811                                  -                1.17     101
                   115           DI w/15"      out                     5.23             2.63     107
                   116           YD w/18"      in and out              5.23             2.61     108
                   117           YD w/18"      out                     5.48             3.19     116
                   118           18'1                                  -                0.57     119
                   119           1811                                  -                0.08     103
                   120           1811                                  -                -        121
                   121           1811                                  -                -        103
                   122           End  pipe                             -                -        123
                   123           DI w/15"      in                      -                -        127
                   124           1511                                  -                1.94     123
                   125           1811                                  -                2.06     124
                   126           1811                                  -                2.13     125
                   127           End  pipe                             -                1.50     128
                   128           End  pipe                             -                -        129
                   129           YD                                    -                -        unknown
                   130           EW w/18"                              -                3.57     132
                   131           EW  w/12"                             -                4.01     132
                   132           EW  w/I 2"    and 18"                 -                3.12     140





                                                                       10-3





                  TOPO SHEET NUMBER 10

                  NUMBER        DESCRIPTION                        TOP            INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                  133           B=2.5, D=1.5, Z=1.5                 -                -        134
                  134           B=3, D=1.5, Z=1.33                  -                -        135
                  135           B=3, D=l, Z=3                       -                -        136
                  136           B=2, D=l, Z=2.5                     -                -        15-26
                  137           1811                                -                -        15-214
                  138           DI w/18" in and         out        4.78              -        139
                  139           EW w/18"                            -              1.55       140
                  140           B=5, D=2.5, Z=1.2                   -                -        Topping Creek
                  141           1811                                -              1.07       Bennett Creek
                  142           1811                                -              1.44       141
                  143           EW w/12"                            -              4.21       144
                  144           EW w/12"                            -              3.76       145
                  145           1511                                -                -        146
                  146           1511                                -                -        142
                  147           1511                                -                -        148
                  148           1511                                -                -        149
                  149           B=l , D=l .5, Z=l .7                -                -        15-84
                  150           End pipe                            -                -        151
                  151           End pipe                            -                -        Bennett Creek
                  152           1511                                -                -        153
                  153           DI                                  -                -        -
                                  1511 and    18" in               4.28            1.28       156
                                  2411 out                          -                -        -
                  154           ES 1811                                            1.50       153
                  155           B=3, D=2, Z=l                       -                -        154
                  156           DI w/24" in, 3011 out              3.51            0.61       157
                  157           EW w/30"                            -              0.50       Bennett Creek
                  158           ES 1511                                            2.00       159
                  159           DI                                  -                -        -
                                  15    in                         3.74            0.74       161
                                  18    in                          -                -        -
                                  24" out                                            -        -
                  160           ES 1811                             -              1.50       159
                  161           DI w/24"      in, 30" out          3.51            0.61       162
                  162           EW w/30"                            -              0.50       Bennett Creek
                  163           1811                                -              2.13       75
                  164           YD w/12"      out                  6.25            3.68       165
                  165           YD w/12"      in and out           6.25            3.41       15-179
                  166           1211                                -                -        167
                  167           1211                                -                -        168
                  168           B=3, D=l, Z=l                       -                -        169
                  169           B=2, D=1.5, Z=l                     -                -        170
                  170           1211                                -                -        171
                  171           1211                                -                -        Bennett Creek
                  172           B=3, D=l, Z=1.5                     -                -        169
                  173           1811                                -                -        174
                  174           1811                                -                -        Bennett Creek
                  175           B=8,    D=2, Z=2                    -                -        180
                  176           YD                                  -                -        -
                                  12"   out                        3.81            1.85       181
                                  12"   in                          -              1.65       -
                                  1811 in                                          1.65       -
                                  240 out                                          1.35       -



                  Rev. 7-20-92                                         10-4






                   TOPO SHEET NUMBER 10

                   NUMBER       DESCRIPTION                         TOP            INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                   177          B=12, D=0.5, Z=4                     -                -        Floyds Bay
                   178          1211                                 -              4.98       176
                   179          1211                                 -              6.46       176
                   180          1811                                 -              7.10       176
                   181          2411                                 -              7.92       177
                   182          1811                                 -              1.35       Bennett Creek
                   183          1811                                 -              1.46       182
                   184          1511                                 -              2.47       185
                   185          1511                                 -              2.02       Bennett Creek




















































                   Rev. 7-20-92                                       10-5





                                                        POQUOSON DRAINAGE STUDY



                   TOPO SHEET NUMBER 11

                   NUMBER        DESCRIPTION                        TOP             INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                      I          B=4, D=2, Z=2                        -               -         2
                      2          EW w/27"x42"                       3.59             0.34       3
                      3          DI                                   -
                                  27 x42" in and out                4.07             0.07       4
                      4          DI                                   -               -         -
                                  2711x42" in                       3.95            -0.05       5
                                  2711 in                             -               -         -
                                  2911x45" out
                      5          DI                                   -               -         -
                                  2911x45" out                      3.31            -0.16       6
                                  1211 in                             -              1.26       -
                                  15" in                                             1.01       -
                      6          DI                                   -               -         -
                                  2911x45" in      and out          2.98            -0.49       7
                      7          MH                                   -               -         -
                                  29 x45" in       and out          3.90            -0.40       8
                      8          EW w/29"x45"                       2.45            -0.97       9
                      9          B=4, Z=2                             -               -         Easton Cove
                   10            EW w/18"                           3.69             0.44       11
                   11            YD                                   -               -         -
                                  18" in                            3.73             0.41       12
                                  2791 out                            -               -         -
                   12            DI w/27"      in and out           4.23             0.17       4
                   13            1511                                 -              1.73       5
                   14            1211                                 -              1.73       5
                   15            24'1                                 -             -0.14       16
                   16            24-1                                 -             -0.17       Canal to Bennetts          Creek
                   17            EW w/15"                             -              1.71       Canal to Bennetts          Creek
                   18            EW w/15"                             -              1.65       Canal to Bennetts          Creek
                   19            1811                                 -              0.35       20
                   20            1811                                 -              0.84       Canal to Easton Cove
                   21            EW w/12"                             -              1.30       17
                   22            EW w/12"                             -              1.89       21
                   23            EW  w/12"                            -               -         17
                   24            EW  w/12"                            -               -         23
                   25            D=1.2, Z=2                           -              2.90       15
                   26            B=6, D=2, Z=1.25                     -               -         Ditch to Easton Cove
                   27            1511                                 -               -         26
                   28            1511                                 -               -         27
                   29            B=2.5, D=2, Z=1.38                   -               -         Big Salt Marsh
                   30            1511                                 -               -         29
                   31            1511                                 -               -         30
                   32            B=2.5, D=1.5, Z=1.5                  -               -         Big Salt Marsh
                   33            1511                                 -               -         32
                   34            1511                                 -               -         33
                   35            1511                                 -               -         36
                   36            1511                                 -               -         Bennetts Creek





                                                        POQUOSON DRAINAGE STUDY




                   TOPO SHEET NUMBER 13

                   NUMBER        DESCRIPTION                        TOP              INVERT     DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                      1          B=8, D=4, Z=1.75                                    5.03       2/3
                      2          361, CMP                            -               4.69       14-13
                      3          361, CMP                            -               4.44       14-13
                      4          B=4, D=3, Z=2                       -
                                                                                                14-22/23/24
                      5          201, CMP                            -               @@,4. 6 4  6
                      6          20" CMP                             -               4.28       7
                      7          EW w/15" and       18" CMP          -                          8
                      8          EW w/15" and       18" CMP          -                -         Lambs Creek
                      9          1511                                -               4.83       10
                   10            1511                                -               5.22       8
                   11            18'1                                -               5.66       12
                   12            1811                                -               5.51       8
















































                                                                      13-1





                                                      'POQUOSON DRAINAGE STUDY



                  TOPO SHEET NUMBER 14

                   NUMBER       DESCRIPTION                        TOP            INVERT       DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                       1        3-6'x8' Box Culvert                  -            -1.77        Oxford Run
                       2        3-6'x8' Box Culvert                  -            -1.71        1
                       3        B=4, D=5.33, Z=1.97                  -              1.11       2
                       4        D=6.2,,*Z=2.3                        -            -0.94        3
                       5        D=7.5,iZ=1.8                         -            -0.67        4
                       6        D=8.45, Z=1.6                        -            -0.69        5
                       7        D=9.7,@Z=1.6                         -            -0.59        6
                       8        3611                                 -              2.68       7
                       9        3611                                 -              2.63       7
                                    1
                    10          36'                                  -              3.16       8
                    11          3611                                 -              3.14       9
                    12          D=4.3,      Z=3                      -              3.97       10 and 11
                    13          D=6.5,      Z=2.3                    -              2.48       12
                    14          D=9.35, Z=2                          -            -0.13        7
                    15          D=8.65, Z=2                          -            -0.47        14
                    16          D=6.6, Z=1.87                        -              0.93       15
                    17          D=5.45, Z=2.4                        -              1.48       16
                    18          D=5.25, Z=2.4                        -              1.20       17
                    19          36"   (EW)                         6.62             1.71       18
                    20          3611  (EW)                         6.62             2.68       18
                    21          36"   (EW)                         6.62             2.74-      18
                    22          36"   (EW)                         6.47             1.89       19
                    23          36"   (EW)                         6.47             2.51       20
                    24          3611  (EW)                         6.47             2.61       21
                    25          3011                                 -              2.02       1
                    26          DI w/30"      in and out                            2.21       25
                    27          DI w/30"      in and out             -              2.48       26
                    28          DI  w/15"     out                  8.00             5.00       29
                    29          MH                                 9.40             2.93       -
                                 1511  and    27"   in               -               -         -
                                 3011  out                           -                         27
                    30          DI                                   -               -         -
                                 24"   in                            -              3.28       -
                                 2711  out                           -               -         29
                    31          DI w/15"      out                  9.00             6.58       30
                    32          DI w/15"      out                  8.20             5.80       33
                    33          DI                                   -               -         -
                                 15" and      24"   in                              3.66       -
                                 2411 out                            -               -         30
                    34          DI w/15"      out                  8.30             5.88       33
                    35          YD w/15"      out                  8.42             5.09       33
                    36          MH                                   -               -         -
                                 151' and     24"   in            10.40             4.14       33
                                 24" out                             -               -         -
                    37          DI w/15"      in and     out       9.00             5.37       36
                    38          DI w/15"      out                  9.00             6.00       37
                    39          MH                                                   -         -
                                 15" and      21" in              10.00             4.23       36
                                 2411 out                            -               -         -



                                                                     14-1





                    TOPO SHEET NUMBER 14

                    NUMBER      DESCRIPTION                        TOP            INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                    40          DI w/15"      out                  9.00               6.00     39
                    41          DI w/15"      out                  9.00               6.00     39
                    42          DI w/15"      in and out             -                5.08     39
                    43          DI                                   -                -        -
                                  15" and     21" in                 -                4.29     39
                                  2111 out                           -                -        -
                    44          DI w/15"      out                  9.60               6.00     43
                    45          DI w/15"      out                  9.20               6.20     46
                    46          MH                                   -                -        -
                                  15" and     21 "   in           10.60               4.64     43
                                  2111 out                           -                -        -
                    47          DI w/15"      out                  9.20               6.00     48
                    48          DI                                   -                -        -
                                  18" in                                              4.79     46
                                  2111 out                           -                -        -
                    49          DI w/15"      out                  9.20               6.20     48
                    50          DI w/15"      out                  9.30               6.00     51
                    51          DI
                                  2-1511 in                          -                5.42     48
                                  18" out                            -                -        -
                    52          DI w/15" out                       8.40               5.66     53
                    53          DI                                   -                -        -
                                  2-1511 in                                           5.53     51
                                  1511 out                           -                -        -
                    54          DI w/15"      out                  7.90               5.90     302
                    55          DI w/15"      in and out             -                5.83     302
                    56          DI w/15"      in and out           8.70               5.87     55
                    57          DI w/15"      in  and out          8.60               5.94     56
                    58          DI w/15"      out                  8.50               6.08     57
                    59          1511                                 -                5.73     61
                    60          ES 18'1                              -                5.31     61
                    61          DI                                   -                -        -
                                  1511 and    18" in                 -                5.26     62
                                  2411 out                           -                -        -
                    62          MH                                   -                -        -
                                  1511 and    24" in               9.00               5.00     64
                                  2411 out                           -                -        -
                    63          DI w/15"      out                  8.70               6.30     64
                    64          MH                                   -                -        -
                                  15" and     24"   in             9.40               -        -
                                  2411 out                           -                4.60     66
                    65          1511                                 -                2.52     341
                    66          DI w/24"      in and     out         -                5.20     67
                    67          DI w/24"      in and     out         -                5.01     69
                    68          DI w/15"      out                  8.80               5.80     69
                    69          JB                                   -                -        -
                                  2-24 and 15"        in             -                -        -
                                  2-24" out                                           3.78     80
                    70          MH w/24" in and out                  -                4.08     69
                    71          MH                                   -                -        -
                                  18" in                           7.38               5'05     70
                                  24" out                            -                4.56     -





                                                                     14-2





                  TOPO SHEET NUMBER 14

                  NUMBER        DESCRIPTION                TOP            INVERT   DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                  72            DI w/18" out               8.23           5.25     71
                  73            DI w/18" out               8.48           5.33     74
                  74            DI w/18" in and out        8.13           4.63     75
                  75            YD                         -              -        -
                                18" and 12" in             7.28           -        -
                                2711 out                   -              4.03     78
                  76            YD w/12" out               8.09           5.96     77
                  77            YD w/12" in and  out       7.87           5.77     75
                  78            DI w/27" in and  out       -              3.56     82
                  79            EW 4211                    -              1.12     18
                  80            JB                         -              -        -
                                2-2411 in                  -              3.63     79
                                2711 in                    -              -        -
                                36" in                     -              2.54
                                4211 out                   -              -
                  81            JB 36" in and out          9.70           3.60     80
                  82            MH                         -              -        -
                                30" in                     9.50           3.78     81
                                3611 out                   -              -        -
                  83            DI w/30" in and out        -              4.57     82
                  84            DI w/15" out               8.40           5.60     83
                  85            DI w/15" out               8.00           5.58     86
                  86            DI w/15" in and out        8.20           5.34     87
                  87            DI                         -              -        -
                                2711 in                    -              4.82     83
                                30" out                    -              -        -
                  88            DI w/15" out               -              5.66     87
                  89            DI w/15" out               -              5.66     90
                  90            MH                         -              -        -
                                15 and 27"  in             9.80           5.06     87
                                2711 out                   -              -        -
                  91            DI w/21" out               -              5.35     92
                  92            DI                         -              -        -
                                2111 in                    -              5.34     90
                                2711 out                   -              -        -
                  93            DI w/27" in and out        -              4.18     80
                  94            DI w/15" out               7.40           4.98     95
                  95            DI                         -              -        -
                                15" and 24" in             -              -        -
                                2711 out                   -              4.46     93
                  96            ES 1511                    -              5.77     99
                  97            YD w/15" out               8.4            5.90     98
                  98            YD w/15" in and out        8.40           5.71     99
                  99            DI                         -              -        -
                                2-1511 in                  8.50           5.51     101
                                1811 out                   -              5.26     -
                100             YD w/15" out               8.40           5.38     101
                101             MH                         9.15           -        -
                                1511 in                    -              5.28     102
                                1811 in                    -              5.03     -
                                1
                                11
                                8out                       -              -        -
                102             DI                         -              -        -
                                15" and 18" In             -              4.78     95
                                24" out                    -              -        -



                                                           14-3





                 TOPO SHEET NUMBER 14

                 NUMBER        DESCRI-PTION                    TOP            INVERT DOWNSTREAM NUMBER
                               All pipes are RCP
                               unless otherwise noted

                 103           DI w/15" out                    8.80           5.60    104
                 104           DI w/15" in and out             -              5.40    102
                 105           D=3.4, B=2, Z=2                                3.65    106
                 106           EW w/2-24"                      -              3.62    107
                 107           EW w/2-24"                      6.47           3.47    119
                 108           YD w/15" out                    8.40           5.72    109
                 109           YD                              -              -       -
                               15   in                         8.40           5.37    111
                               18   out                        -              5.12    -
                 110           YD w/15"  out                   8.40           5.67    109
                 ill           MH w/18"  in and out            9.50           4.92    113
                 112           YD w/l 5" out                   7.29           4.70    113
                 113           MH                              -              -       -
                               15" and   18"   in              8.00           4.62    115
                               24" out                         -              -       -
                 114           YD                                             -       -
                               29 x45"   in                    -              4.96    115
                               1511 in                         -              6.25    -
                               2911x45"  out                   -              4.42    -
                 115           JB                              -              -       -
                               2911x45"  in                    8.50           4.31    116
                               4211 out                        -              -       -
                 116           MH w/42"  in  and out           8.50           4.11    117
                 117           DI w/42"  in  and out           8.33           3.86    118
                 118           EW w/42"                        8.00           3.49    119
                 119           B=7, D=5,   Z=2                 -              3.47    309
                 120           DI w112" out                    -              7.30    121
                 121           DI                              -              -       -
                               12" in                          -              7.20    124
                               1511 out                        -              -       -
                 122           DI w112"  out                   -              7.40    124
                 123           DI w/12"  out                   -              7.40    124
                 124           MH                              -              -       -
                               12" and   15"   in              9.60           6.87    125
                               23"xl 4"  out                   -              -       -
                 125           DI w/23"xl4"    in and out -                   6.81    127
                 126           DI w/12" out                    8.20           6.65    127
                 127           MH                              -              -       -
                               23"xl 4"  in                    9.50           6.59    290
                               30"xl9"   out                   -              -       -
                 128           DI w/1211 out                   8.40           6.59    129
                 129           DI                              -              -       -
                               12" in                          -              6.49    9-58
                               3011xl 9" in                    -              -       -
                               34"x22"   out                   -              -       -
                 130           DI w/15"  out                   -              6.56    131
                 131           DI w/15"  in and out            -              6.54    133
                 132           ES 1511                         -              6.60    133
                 133           MH                              -              -       -
                               2-15 " in                       9.40           6.44    135
                               15" out                         -              -       -
                 134           DI w/15" out                    8.30           6.50    135





                                                               14-4





                   TOPO SHEET NUMBER 14

                   NUMBER            DESCRIPTION                       TOP              INVERT DOWNSTREAM NUMBER
                                     All pipes are RCP
                                     unless otherwise noted


                   135               DI                                                 -         -
                                     2-1511 in                                          6.40      137
                                     2311xl4" out                      -                -         -
                   136               DI w/15" out                      8.80             6.50      137
                   137               DI                                -                -         -
                                     15" in                            -                6.23      139
                                     2311xl4" in                       -                -         -
                                     301IX19" out                      -
                   138               DI w/15" out                      8.80             6. 40     139
                   139               DI                                -
                                     1511 in                           -                6:.16     141
                                     30"xl9" in    and out             -                -         -
                   140               DI w/15"  out                     -                6.20      141
                   141               MH                                -                -         -
                                     1511 in                           9.00             61.13     9-59
                                     30 $1 xl 9" in                    -                -         -
                                     301IX19"  out                     -                -         -
                   142               DI w/15"  out                     -                6.20      9-59
                   143               DI w/15"  out                     -                6.08      146
                   144               DI w/15"  out                     9.00             6.58      145
                   145               DI w/1511 in and out              9.00             6.38      146
                   146               DI                                -                -         -
                                     2-15" in                          -                5.66      149
                                     1811 out                          -                -         -
                   147               ES 15'1                           -                6.50      149
                   148               DI w/15"  out                     9.00             6@. 58    194
                   149               MH                                -                -         -
                                     15" and   18"   in             11.00               5.32      151
                                     2111 out                          -                -         -
                   150               ES 1511                           -                6.60      151
                   151               DI                                -                -         -
                                     21" in                            -                4.79      -
                                     24" out                           -                -         153
                   152               DI w/15"  out                     8.50             5.90      153
                   153               DI w/24"  in and out              -                4.28      154
                   154               MH                                -                -         -
                                     24 in                             9.20             4.19      155
                                     2711 out                          -                -         -
                   155               MH w/27"  in and out              9.20             4.06      157
                   156               DI w/15"  out                     7.90             5.50      157
                   157               DI w/2711 in and out              -                4.00      159
                   158               DI w/15"  out                     8.00             5.58      159
                   159               DI                                -                -         -
                                     2711 in                           -                3.76      161
                                     3011 out                          -                -         -
                   160               DI w/15"  out                     -                5.98      161
                   161               DI w/30"  in and out              -                3.06      162
                   162               DI w/30"  in and out              -                2.68      164
                   163               ES 15'1                           -                4.20      164
                   164               MH w/30"  in  and out             8.80             2.60      165
                   165               30" into  Box Culvert             -                2.45      1
                   166               1511                                               6.60      167





                                                                       14-5





                   TOPO SHEET NUMBER 14

                   NUMBER        DESCRIPTION                          TOP           INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted


                   167           15" into Box Culvert                 -             2.23      1
                   168           B=3,   D=2                           -             1.58      Oxford Run
                   169           B=3,   D=2                           -             3.30      168
                   170           B=2,   D=2, Z=.75                    -             3.53      169
                   171                                                -             -1.47     Oxford Run
                   172           B=l,   D=1.5, Z=.67                  -             .1.43     171
                   173           B=2,   D=3, Z=.67                    -             2.93      172
                   174           B=3,   D=4, Z=.38                    -             3.60      173
                   175           B=2,   D=3, Z=.3@-                   -             4.98      174
                   176           2411                                 -             5.54      175
                   177           2411                                 -             5.81      -176
                   178           2411                                 -             5.85      177
                   179           2491                                 -             5.99      178
                   180           1211                                 -             7.31      181
                   181           1211                                 -             7.08      182
                   182           D=l, Z=l                             -             7.58      Into Pond
                   183           B=3, D=2.5, Z=.3                     -             -1.87     Oxford Run
                   184           B=2.5, D=2, Z=.37                    -             1.60      183
                   185           B=2, D=3, Z=.5                       -             4.60      184
                   186           1811                                 -             5.10      185
                   187           1811                                 -             5.33      186
                   188           1211                                 -             5.64      187
                   189           1211                                 -             6.23      188
                   190           1211                                 -             6.91      191
                   191           1211                                 -             6.29      187
                   192           1211                                 -             6.17      187
                   193           1211                                 -             6.30      192
                   194           1211                                 -             7.13      195
                   195           1211                                 -             6.98      193
                   196           1511                                 -             7.31      Various Directions
                   197           1511                                 -             7.49      Various Directions
                   198           1511                                 -             7.84      Various Directions
                   199           1511                                 -             6.57      Various Directions
                   200           -                                    -             0.50      Oxford Run
                   201           4211                                 -             1.67      200
                   202           4211                                 -             1.79      201
                   203           B=2, D=4, Z=.75                      -             2.02      202
                   204           B=3, D=6, Z=l                        -             2.73      203
                   205           1811                                 -             3.33      204
                   206           18'1                                 -             3.27      205
                   207           B=3, D=4, Z=.63                      -             3.03      206
                   208           B=3, D=2, Z=.25                      -             3.27      207
                   209           B=3.5, D=4, Z=@44                    -             3.47      208
                   210           1811                                 -             3.49      209
                   211           1811                                 -             3.68      210
                   212           B=2, D=2, Z=1.25                     -             4.60      211
                   213           B=2, D=3, Z=.5                       -             5.13      212
                   214           1211                                 -             4.76      215
                   215           12'1                                 -             4.77      213
                   216           1211                                 -             5.63      213
                   217           12"                                  -             5.70      216
                   218           1211                                 -             5.36      219




                   Rev. 7-20-92                                       14-6 -





                   TOPO SHEET NUMBER 14

                   NUMBER        DESCRIPTION                       TOP             INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                   219           1211                                -              5.18       213
                   220           D=1.9, Z=.26                        -              5.74       207
                   221           D=1.3, Z=1.14                       -              4.70       222
                   222           B=2, D=2.5                          -              3.40       207
                   223           18 It                               -              4.93       224
                   224           1811                                -              4.73       225
                   225           1811                                -              4.64       315
                   ?26           DI w/15" in and out               5.03             2.26       227
                   227           YD                                  -                -        -
                                  1211 in                          4.21             2.72       229
                                  15" in                             -              1.96       -
                                  1811 out                           -              1.57       -
                   228           1211                                -              3.04       227
                   229           18 Is                               -             -0.08       Cedar Creek
                   230           1211                                -              5.50       225
                   231           1211                                -              5.71       230
                   232           B=2.5, D=1.5, Z=1.3                 -                -        223
                   233           1211                                -              5.72       Completely Blocked
                   234           1211                                -              5.62       Completely Blocked
                   235           18 18                               -              5.69       319
                   236           1511                                -              5.60       319
                   237           DI w/18" in and out               6.40             4.33       238
                   238           DI                                  -                -        -
                                  2-18" in                         6.77             4.02       242
                                  2411 out                           -                -        -
                   239           YD w/12"     in and out           6.14             4.59       240
                   240           YO                                  -                -        -
                                  2-1811 out                       6.61             3.84       241
                                                                                    3.79       -
                                  24" in                             -              3.79         -
                                  1211 in                                           4.78         -
                   241           EW                                  -                -        -
                                  2-1811                           6.60             3.66       244
                                                                                    3.67       -
                                  1811                               -              3.63       -
                                  2411                                              3.62       -
                   242           YD w/24" in and out                                3.94       243
                   243           YD                                  -                -        -
                                  24 in                            6.15             3.46       241
                                  2411  out                          -              3.37       -
                   244           D=1.3, B=6, Z=3.4                   -              3.83       245
                   245           D=2.4, B=7, Z=3.3                   -              2.43       246
                   246           D=6, B=8, Z=l                       -             -0.31       248
                   247           EW 18"                            4.73             0.41       248
                   248           EW 6011                           5.79            -0.71       251
                   249           DI                                  -                -        -
                                  15    in                         5.91             2.55       320
                                  15"   out                          -              2.46       -
                   250           1516                                               2.51       251
                   251           JB                                  -                -        -
                                  60 "  in                         5.86            -0.81       252
                                  12"   and   15" in                 -              2.48       -
                                  6011  out                                           -




                   Rev. 7-20-92                                       14-7





                   TOPO SHEET NUMBER 14

                   NUMBER        DESCRIPTION                           TOP           INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted


                   252           JB                                    -                -        -
                                     60" in                            5.44          -1.23       253
                                     1811 in                           -             0.73        -
                                     6011 out                          -                -        -
                   253           EW 60"                                5.22          -1.28       254
                   254           B=4, D=4, Z=l                         -             -1.29       Cedar Creek
                   255           DI w/18" in and out                   6.72          3.79        256
                   256           DI                                    -                -        -
                                     1811 in                           6.35          3.59        260
                                     1411x23" in                       -                -        -
                                     24" out                           -                -        -
                   257           DI w/15"     out                      6.32          3.76        258
                   258           DI                                    -                -        -
                                     15" in                            6.32          3.70        256
                                     1411x23" out                      -                -        -
                   259           DI                                    -                -        -
                                     21" in                            6.32          3.37        260
                                     19"x3O"  out                      -                -        -
                   260           DI                                    -                -        -
                                     24" in                            6.35          3.31        261
                                     19"x3O"  in                       -                -        -
                                     3011 out                          -                -        -
                   261           YD w/30"     in   and out             5.73          3.01        262
                   262           3011                                  -             2.97        65
                   263           YD w/18"     out                      6.08          4.08        264
                   264           YD w/18"     in and out               6.15          3.85        265
                   265           YD w/18"     in   and out             6.21          3.76        266
                   266           YD w/18"     in   and out             6.13          3.71        241
                   267           B=3, D=2, Z=.25                       -             4.92        268
                   268           B=2.5, D-2, Z=.63                     -             5.13        269
                   269           B=4, D=2, Z=.5                        -             4.50        270
                   270           B=3, D=3, Z=.5                        -             4.6         273
                   271           1211                                  -             4.36        272
                   272           YD w/12" in and out                   6.04          4.20        274
                   273           2411                                  -             4.29        274
                   274           DI                                    -                -        -
                                     24" in                            6.87          4.38        275
                                     12" in                            -             4.29        -
                                     24"xl9" out                                     4.08        -
                   275           DI                                    -                -        -
                                     27"xl9" in                        6.92          4.62        240
                                     2411 out                          -             4.23        -
                   276           DI w/12"     out                      7.23          4.98        277
                   277           YD w/12"     in and out               6.91          4.91        278
                   278           ES 1211                               -             4.73        269
                   279           B=4, D=3, Z=.5                        -             5.23        278
                   280           1211                                  -             5.30        279
                   281           1811                                  -             5.02        279
                   282           1211                                  -             4.97        280
                   283           1811                                  -             4.96        281
                   284           Ditch Fades.Out                       -                -        282/283
                   285           1811                                  -                         284





                                                                       14-8





                   TOPO SHEET NUMBER 14

                   NUMBER        DESCRIPTION                       TOP             INVERT       DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                   286           18" half pipe                                      5.40        279
                   287           ES 1511                              -             7.00        290
                   288           DI 11"xl8"                        7.58ï¿½            5.43        279
                   289           DI llllxl8"                       7.58ï¿½            5.48        288,
                   290           MH                                   -                -        -
                                  15" in                           9.50             6.54        129
                                  3011X19" in                         -                -        -
                                  3011X19" out                        -                -        -
                   291           18" half pipe                        -             5.63        289
                   292           B=2, D=1.5, Z=1.67                   -             4.25        305
                   293           B=l, D=1.5,       Z=2                -             3.51        294
                   294           B=2, D=3.3,       Z=2                -             2.61        295
                   295           1811                                 -             2.24        296
                   296           DI w/18" in       and   out       5.34             2.22        297
                   297           DI w/18" in       and   out       5.34             2.10        298
                   298           1811                                 -             2.08        299
                   299           B=2, D=3.7,       Z=2                -             2.08        15-194
                   300           DI w/15" out                      6.80             4.38        29
                   301           ES 15"                               -             5.12        42
                   302           DI w/15"     in and     out          -                         53
                   303           DI w/15"     out                  8.70             6.30        62
                   304           DI  w/15"    out                  8.60             6.18        146
                   305           18                                   -             2.04        306
                   306           DI w/18"     in and     out       4.85             1.99        307
                   307           DI  w/18"    in and     out       4.73             1.76        308
                   308           1811                                 -             1.71        15-189
                   309           3011                                 -             2.78        310
                   310           3011                                 -             2.91        22/23/24
                   311           B=3.5, D=l, Z=l                      -             6.00        114
                   312           1811                                 -             3.56        211
                   313           1811                                 -             3.63        312
                   314           D=l, Z=3                             -             4.03        313
                   315           1811                                 -             5.74        316
                   316           B=l, D=2, Z=.75                      -             5.01        317
                   317           B=1.5, D=2, Z=2.13                   -             2.49        318
                   318           1511                                 -             2.21        226
                   319           YD                                   -                -        -
                                  15" in                           8.41             5.66ï¿½       238
                                  18" in and out                      -                -        -
                   320           15" into 60"                         -             1.50ï¿½       251
                   321           ES 21'1                              -             3.39        259
                   322           EW w/18"                             -             4.45        9-3
                   323           YD w/18"     out                  6.23             4.53        322
                   324           YD w/18"     out                  7.23             4.88        237
                   325           1211                                 -             3.59        326
                   326           YD                                   -                -        -
                                  12" in                           5.48             3.49        327
                                  1811 out                            -             2.94        -
                   327           YD                                   -                -        -
                                  1811 in                          3.10             0.92        252
                                  18" out                             -             0.62        -
                   328           1811                                                  -        285





                                                                      14-9





                   TOPO SHEET NUMBER 14

                   NUMBER        DESCRIPTION                        TOP            INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted-

                   329           1211                                -               4.27       330
                   330           1211                                -               4.22       250
                   331           1211                                -               5.03       239
                   332           1511                                -               3.19       333
                   333           DI w/15" in and out                4.65             1.74       334
                   334           DI  w/15" in and out               5.01             1.70       15-203
                   335           12                                  -               7.00       336
                   336           1211                                                6.91       236
                   337           B=3, D=1.5, Z=2                     -               4.50       1 5-17i,
                   338           YD w/12" in and          out       6.25             4.26       339
                   339           YD w/12" in and          out       6.25             3.85       340
                   340           1211                                -               3.57       15-177
                   341           1511                                                2.48       246


















































                                                                       14-10





                                                         POQUOSON DRAINAGE STUDY



                   TOPO SHEET NUMBER 15

                   NUMBER         DESCRIPTION                           TOP           INVERT        DOWNSTREAM NUMBER
                                  All pipes are RCP
                                  unless otherwise noted

                        I         EW w/24"                              -             -0.08         Canal to Back River
                        2         EW w/24"                              -             -0.08         Canal to Back River
                        3         EW w/24"                              -             0.62          1
                        4         EW w/24"                              -             0.52          2
                        5         B=11, D=4.5, Z=0.45                   -             0.66          3and 4
                        6         B=9, D-3.5, Z=.6                      -             1.16          5
                        7         B=7, D=1.5, Z=2.33                    -             1.66          6
                        8         3611                                  -             1.31          7
                        9         3611                                  -             1.66          7
                     10           3611                                  -             1.78          8
                     11           3611                                  -             1.86          9
                     12           B=3, D=2.5, Z=.8                      -             1.76          10 and 11
                     13           B=3, D=2.5, Z=-8                      -             2.45          12
                     14           B=2, D=2, Z=l                         -             2.75          13
                     15           B=l, D=l, Z=l                         -             2.82          14
                     16           B=2.5, D=1.5,        Z=1.2            -             3.02          15
                     17           1811                                  -             2.75          16
                     18           1811                                  -             2.71          17
                     19           B=2.5, D=1.75,        Z=l             -             2.97          18
                     20           B=2, D=l, Z=5                         -             3.17          19
                     21           B=3.5, D=3, Z=.9                      -             3.16          20
                     22           B=3, D=3, Z=.8                        -             3.06          21
                     23           B=2, D=2.5, Z=l                       -             3.47          22
                     24           1811                                  -             2.47          23
                     25           1811                                  -             2.64          24
                     26           B=2, D=2, Z=.75                       -             3.47          25
                     27           B=l, D=2.5, Z=1.2                     -             3.47          25
                     28           B=1.5, D=2.5, Z=1.3                   -             3.47          24
                     29           B=2,  D=2, Z=1.5                      -             4.07          25
                     30           B=l,  D=1.5, Z=1.3                    -             3.67          24
                     31           B=3,  D=2, Z=.5                       -             3.41          32
                     32           B=2,  D=2.5, Z=l                      -             3.26          21
                     33           B=3,  D=2.5, Z=.6                                   2.16          7
                     34           B=3,  D=2.3, Z=1.1                                  2.16          6
                     35           B=2.5, D=.5, Z=5.5                    -             3.06          34
                     36           EW w/36"                          4.80             -1.15          Canal to Topping Creek
                     37           DI                                5.00                -           -
                                  3611  out                             -            -0.74          36
                                  21    in                              -             1.72          36
                     38           DI                                5.00                -           -
                                  21    out                             -             1.82          37
                                  15"   in                              -             2.01          37
                     39           DI w/15"    out                   5.27              2.28          38
                     40           36" Stub    (Plugged)                 -               -           37
                     41           EW w/24"                          4.50            -0.11           Canal to Topping Creek
                     42           DI                                5.00                -           -
                                  24" out                               -             0.11          41
                                  1811  in                                            0.11          41
                                  1211  in                                            0.88          41




                                                                        15-1





                   TOPO SHEET NUMBER 15


                   NUMBER        DESCRIPTION                        TOP             INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                     43          MH w/18" in and out                5.47             0.49       42
                     44          DL                                 5.19                 -      -
                                   1811 out                            -             0.93       43
                                   1511 in                                           2.75       43
                                   1211 in                             -             2.88       43
                     45          DI w/15"       out                 5.39             2.87       44
                     46          DI w/12"       out                 5.23             2.98       44
                     47          DI 12" out                         5.00             1.00       42
                     48          B=@, D=3, Z=.33                       -             1.5        Topping Creek
                     49          B=j, D=3, Z=l                                       2.5        48
                     50          1811                                  -             2.7        49
                     51          DI w/14"x23"         in            5.42             2.71       50
                                   1811 out                            -             2.71       -
                                   1211 in                             -             2.71       -
                     52          DI-w/14"x23"         out           5.42             2.81       51
                                   1811 in                             -             2.81       -
                                   1211 in                             -             2.81       -
                     53          1811                                  -             2.82       52
                     54          B=3, D=3, Z=1.67                      -             3.00       53
                     55          B=2, D=l, Z=1.1                       -             4.45       54
                     56          YD w/12" in and out                5.20             3.01       52
                     57          YD w/12" out                       5.10             3.12       56
                     58          YD w/12" in and         out        5.00             2.93       51
                     59          YD w/12" out                       5.00             3.03       58
                     60          B=7, D=1.5, Z=1.67                    -             0.83       Topping Creek
                     61          18!'                                  -             d.92       60
                     62          1811                                  -             2.10       61
                     63          B=4, D=1.5, Z=1.67                    -             1.20       62
                     64          B=2, D=2, Z=l                         -             1.60       63
                     65          3011                                  -             1.73       64
                     66          3011                                  -             1.93       65
                     67          B=2, D=2, Z=l                         -             2.40       66
                     68          1811x24"    CMP                       -             2.43       67
                     69          1811x24"    CMP                       -             2.53       68
                     70          1511x2l"    CMP                       -             2.93       69
                     71          15"x2l "    CMP                       -             3.13       70
                     72          1 5"x2l "   CMP                       -             3.61       71
                     73          15"x2l"     CMP                       -             3.82       72
                     74          1511x2l"    CMP                       -             2.83       67
                     75          1511x2l"    CMP                       -             3.03       74
                     76          B=4, D=2, Z=l                         -             2.0        66
                     77          B=2,   D=2, Z=1.5                     -             2.9        76
                     78          1511                                  -             2.93       77
                     79          1511                                  -             3.53       78
                     80          B=2,   D=2, Z=.75                     -             1.11       Topping Creek
                     81          1.7'   Paved Swale                    -             1.84       80
                     82          1.7'   Paved Swale                    -             3.16       81
                     83          B=3,   D=3, Z=l                       -             3.13       82
                     84          B=2,   D=1.5, Z=1.67                  -             3.63       83
                     85          1.7'   Paved Swale                    -             1.84       80
                     86          6.3'   Valley Gutter                  -             4.05       85
                     87          6.3'   Valley Gutter                  -             4.12       86
                     88          1.7'   Paved Swale                    -             4.42       87
                     89          B=2,   D=2, Z=l                       -             2.21       Topping Creek


                                                                       75-2






                   TOPO SHEET NUMBER 15


                   NUMBER       DESCRIPTION                           TOP           INVERT     DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                    90          EW w/14"x23"                          4.18          2.45       89
                    91          EW   w/14"x23"                        4.38          2.65       90
                    92          12                                    -             3.22       90
                    93          1211                                  -             3.42       92
                    94          B=8, D=1.5, Z=3                       -             1.91       Topping Creek
                    95          B=2. 5, D=l .5, Z=l                   -             4.30       94
                    96          B=l, D=.5, Z=.5                       -             4.60       95
                    97          1211                                  -             4.35       96
                    98          12'                                   -             4.48       97
                    99          D=l, Z=1.5                            -             3.83       115
                   100          1211                                  -             4.56       99
                   101          12'1                                  -             4.60       100
                   102          B=11, D=3,        Z=1.5               -             0.00       Back River
                   103          B=5, D=3.5, Z=31                      -             1.60       102
                   104          1211                                  -             1.92       103
                   105          1211                                  -             2.15       104
                   106          1811                                  -             1.57       103
                   107          18'1                                  -             1.65       106
                   108          B=2.5, D=2.5, Z=.9                    -             2.2        107
                   109          1811                                  -             2.07       108
                   110          1811                                  -             2.78       109
                   ill          B=2, D=2, Z=l                         -             2.3        110
                   112          18'1                                  -             2.25       111
                   113          1811                                  -             2.19       112
                   114          B=3, D=1.5, Z=.67                     -             2.9        113
                   115          B=3, D=1.5,       Z=.67               -             3.3        114
                   116          B=3, D=1.5,       Z=.67               -             3.1        115
                   117          B=l, D=0.5,       Z=l                 -             3.7        116
                   118          D=.7, Z=7                             -             3.2        117
                   119          D=.3, Z=13                            -             3.5        118
                   120          B=3, D=1.5,       Z=.67               -             3.10       121
                   121          B=3, D=1.5,       Z=.67               -             3.10       (sheet 10-155)
                   122          1211                                  -             4.49       123
                   123          1211                                  -             4.37       110
                   124          1511                                  -               -        Canal @ Cedar Landing
                   125          DI w/15" in and out                   -               -        124
                   126          DI w/15"      out                     -               -        125
                   127          EW   w/18"                            -            -0.05       Canal to Back River
                   128          DI                                    3.65                -    -
                                     1811 out                         -             0.27       -
                                     1511 in                          -             0.52       127
                   129          DI w/15"      out                     -               -        128
                   130          EW w/15"                              -            -0.27       Canal to Back River
                   131          DI                                    3.77            -        -
                                     1511 out                         -            -0.04       -
                                     1211 in                          -             0.21       130
                   132          DI w/12".out                          -               -        131
                   133          1511                                  -             2.00       Canal to Back River
                   134          DI w/15" in and out                   4.71          2.03       133
                   135          DI w/15" out                          4.71          2.13       134
                   136          B=2.5, D=3, Z=l                       -             1.63       Cedar Creek
                   137          B=2, D=2, Z=1.4                       -             2.43       136
                   138          811                                   -             2.41       137
                   139          811                                   -             3.04       138



                                                                      15-3





                   TOPO SHEET NUMBER 15

                   NUMBER       DESCRIPTION                         TOP            INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                   140          B=3.5, D=1.5, Z=2.2                   -              1.82       Cedar Creek
                   141          B=3.5, D=2.5, Z=l                     -              2.52       140
                   142          1811                                  -              2.23       141
                   143          1811                                  -              2.22       142
                   144          B=2.5, D=2.5, Z=l                     -              2.32       143
                   145          B=3, D=2, Z=l                         -              3.29       144
                   146          B=2.5, D=2, Z=.l                      -              3.49       145
                   147          EW   w/18"                            -              1.55       Canal to Cedar Creek
                   148          MH   w/18"    in and out            4.23             2.49       147
                   149          DI   w/18"    out                   5.39             2.59       148
                   150          EW   w/18"                            -              1.52       Canal to Cedar Creek
                   151          MH   w/18"    in and out            4.47             2.36       150
                   152          DI   w/18"    out                   5.39             2.59       151
                   153          EW   w/18"                            -              1.38       Canal to Cedar Creek
                   154          DI   w/18"    out                   5.21             1.68       153
                   155          EW   w/18"                            -              1.47       Cedar Creek
                   156          DI   w/18"    out                   5.07             2.27
                   157          EW   w/30"                            -              1.40       Canal to Cedar Creek
                   158          MH                                  4.33               -        -
                                  30    out                           -              1.59       -
                                  24    in                            -              1.59       -
                                  18"   in                            -              1.59       -
                                  18"   in                            -              1.59       157
                   159          DI                                  5.53               -        -
                                  24 11 out                           -              1.98       -
                                  1811  in                                           1.98       -
                                  1211  in                            -              3.02       158
                   160          MH w/1811     in and out            6.13             2.35       159
                   161          DI   It                             5.45               -        -
                                  18 out                              -              2.94       -
                                  12 It in                            -              2.94       160
                   162          DI   w/l 2"   out                   5.45             3.15       161
                   163          DI   w112"    out                   5.53             3.23       159
                   164          DI   w/18"    in and out            5.03             2.12       158
                   165          DI   w18" in and out                5.06             2.33       164.
                   166          DI                                  5.47               -        -
                                  18 out                              -              2.62       -
                                  12" in                              -              2.62       165
                   167          YD w112"      out                   4.23             2.94       166
                   168          DI                                  5.20               -        -
                                  1811 out                            -              2.00       -
                                  1211 in                             -              2.69       158
                   169          DI w/12"      out                   5.20             2.90       168
                   170          DI w/15"      in and out            5.23             2.42       196
                   171          DI w/15"      in and out            5.27             2.63       170
                   172          DI w112"      in  15" out           5.25             3.53       171
                   173          1211                                  -                -        172
                   174          EW w/1511                             -              0.17       196
                   175          DI w/15"      in  and out           5.00             0.61       174
                   176          DI w/15"      out                   5.00             0.73       175
                   177          2411                                                 0.95       201
                   178          15"                                   -              2.75       177
                   179          YD                                  6.25               -        -
                                  15" out                             -              3.01       -
                                  12" in                                             3.01       178


                                                                      15-4





                   TOPO SHEET NUMBER 15

                   NUMBER        DESCRIPTION                        TOP            INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                   180           1511                                -               3.16      178
                   181           YD                                 6.25                -      -
                                  15" out                            -               3.43      -
                                  1211 in                            -               3.43      180
                   182           D=2, Z=2                            -               1.48      196
                   183           D=1.5, Z=2                          -               4.40      182
                   184           DI                                 4.73                -      -
                                  18" out                            -               1.33      -
                                  15" in                                             1.59      -
                                  12 13 in                           -               1.33      -
                   185           DI w/12"      out                  4.73             1.73      184
                   186           DI w/15"      out                  4.73             1.73      184
                   187           DI                                 5.93                -      -
                                  1511 out                           -               3.08      -
                                  1211 in                            -               3.08      Sheet     14-249
                   188           1211                                -               3.38      187
                   189           B=2, D=1.5, Z=2                     -               0.10      Cedar     Creek
                   190           1511                                -               1.93      189
                   191           DI w/15" in and         out        5.18             1.42      190
                   192           DI w/15" out                       5.07             2.46      191
                   193           B=2, D=.5, Z=2                      -               4.25      194
                   194           B=2, D=1.5, Z=2                     -               0.30      Cedar     Creek
                   195           EW w/48"x76"                       5.12           -0.52       Cedar     Creek
                   196           EW w/48"x76"                       5.66           -0.31       195
                   197           EW w/24"                           5.12           -0.20       Cedar     Creek
                   198           EW w/24"                           5.66             0.45      197       -
                   199           EW w/18"                           5.12             1.60      Cedar     Creek
                   200           1811                                -               2.27      199
                   201           24 to                               -               0.90      196
                   202           B=10, D=3, Z=l                      -               0.80      Cedar     Creek
                   203           1811                                -               1.29      202
                   204           1211                                -               2.97      Cedar     Creek
                   205           1211                                -               2.81      204
                   206           15 It                               -               4.41      204
                   207           15'1                                -               4.20      206
                   208           1211                                -               4.87      204
                   209           1211                                -               5.13      208
                   210           EW w112"                           7.45             4.04      200
                   211           12'1                                -               4.61      210
                   212           1211                                -               4.09      198
                   213           12"                                 -               4.23      212
                   214           12'1                                -               2.89      31
                   215           1811                                -                  -      Canal to Topping Creek
                   216           DI                                  -                  -      -
                                  1811 out                           -                  -      -
                                  15" in                             -                  -      215
                   217           DI w/15"      out                                             216
                   218           EW w/18"                            -                  -      10-149
                   219           EW w/18"                            -                  -      218








                                                                      15-5





                                                         POQUOSON DRAINAGE STUDY




                   TOPO SHEET NUMBER 16

                   NUMBER        DESCRIPTION                        TOP              INVERT       DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                       I         B=4, D=3.5, Z=-86                                   0.13         Watts Creek
                       2         2411                                                0.52         1
                       3         24'1                                                0.54         2
                                     11
                       4         24                                                  0.36         1
                       5         2411                                                0.26         3
                       6         B=l,   D=3, Z=1.27                                  1.04         5
                       7         B=4,   D=3, Z=.42                                     -          6
                       8         B=2,   D=2, Z=1.4                                     -          7
                       9         B=l,   D=.8, Z=0.03                                   -          8
                    10           B=l,   D=l, Z=1.5                                     -          9
                    11           B=3,   D=2, Z=l                       -               -          7
                    12           B=l,   D=2, Z=.25                     -               -          11
                    13           B=2,   D=2, Z=.25                     -               -          7
                    14           B=l,   D=l, Z=.73                     -               -          13
                    15           DI  w/l 5"   out                   3.71             1.93         16
                    16           DI  w/15"    in,    18" out        4.46             1.53         88
                    17           DI  w1l 2"   out                   3.69             1.60         18
                    18           DI  w/l 2"   in,    15" out        2.98             1.05         16
                    19           DI  w/15"    out                   3.70             1.86         20
                    20           DI  w/15"    in,    12" out        3.56             1.11         18
                    21           DI  w/18"    out                   3.75             1.26         22
                    22           DI  w/18"    in                    4  04            0.98         89
                    23           DI  w/15"    out                   3.53             1.40         24
                    24           1511                                  -               -          39
                    25           DI w/18"     out                   3.53             1.25         26
                    26           DI w/18"     in and out            3.60             1.30         27
                    27           1811                                  -               -          41
                    28           B=18, D=5.5, Z=.5                     -               -          Canal to Big Salt Marsh
                    29           2411                                  -               -          28
                    30           2411                                  -               -          29
                    31           2411                                  -               -          28
                    32           2411                                  -               -          31
                    33           B=8, D=2.5, Z=.8                      -               -          30 and 32
                    34           2411x38"                              -               -          33
                    35           2411x38"                              -               -          34
                    36           B=7, D=2, Z=2                         -               -          35
                    37           B=152 D=31 Z=.8                       -               -          36
                    38           DI                                    -               -          -
                                  36" in and stub out               3.78               -          37
                    39           DI                                    -               -          -
                                  stub in and 36" out               3.78            -0.27         38
                    40           B=6, D=22 Z-1.25                      -               -          39
                    41           B=6, D=2, Z=1.3                       -               -          40
                    42           B=4, D=1.5, Z=l                       -               -          41
                    43           DI                                    -               -          -
                                  18" in and stub         out       3.20             1.50         42
                    44           DI w/18" out                       3.45             1.40         43
                    45           DI w/15" out                       3.78             1.85         46




                    Rev. 7-20-92                                       16-1





                     TOPO SHEET NUMBER 16

                     NUMBER      DESCRIPTION                        TOP              INVERT DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted

                     46          15"                                   -             1.73       41
                     47          YD w/15" out                       3.05             1.05       48
                     48          YD                                    -                -       -
                                   2-15 in                          2.39             0.39       49
                                   1511 out                            -                -       -
                     49          EW w/15"                              -             0.23       35
                     50          DI w/15"      out                  3.73             0.73       49
                     51          B1=6, D=1.5, Z=.67                    -                -       41
                     52          B76, D=l .25, Z=l                     -                -       51
                     53          EW w/18"                              -                -       54
                     54          EW w/18"                              -                -       Marsh
                     55          EW w/15"                              -                -       56
                     56          EW w/15"                              -                -       57
                     57          B=l , D=l , Z=l .75                   -                -       Long Creek
                     58          EW w/18"                              -                -       59
                     59          EW w/18"                              -                -       60
                     60          B=4, D=1.5, Z=1.67                    -                -       Long Creek
                     61          1511                                  -                -       62
                     62          1511                                  -                -       63
                     63          B=6, D=1.5, Z=2                       -                -       Marsh
                     64          B=4, D=1.5, Z=l                       -                -       Big Salt Marsh
                     65          1211                                  -                -       64
                     66          MH  w/12" in and        out           -                -       65
                     67          12                                    -                -       66
                     68          1211                                  -                -       66
                     69          1211                                  -                -       66
                     70          1811                                                1.98       70
                     71          1811                                  -             1.86       72
                     72          EW w/18"                           5.05             3.00       73
                     73          EW w/18"                           4.97             2.92       74
                     74          B=4,   D=2, Z=2                       -                -       11-1
                     75          B=l,   D=0.7, Z=2                     -             3.39       74
                     76          B=l,   D=0.6, Z=2                     -             3.49       75
                     77          B=4,   D=3.5, Z=1.5                   -                -       Marsh at Watts Creek
                     78          B=2,   D=2, Z=.5                      -                -       77
                     79          B=3,   D=2.3, Z=.25                   -                -       78
                     80          B=l,   D=.8, Z=O                      -                -       78
                     81          B=2,   D=1.7, Z=0.6                   -                -       78
                     82          1211                                  -                -       83
                     83          1211                                  -                -       Watts Creek
                     84          B=8                                   -                -       Back River
                     85          B=2,   D=1.7, Z=0.6                   -                -       84
                     86          B=4,   D=3, Z=0.3                     -                -       Watts Creek
                     87          B=2,   D=.4, Z=1.25                   -                -       86
                     88          1811                                  -                -       Easton Cove
                     89          1511                                  -             0.88       28












                  Rev. 7-20-92                                         16-2





                                           POQUOSON DRAINAGE STUDY



              TOPO SHEET NUMBER 17

              NUMBER     DESCRIPTION                TOP         INVERT DOWNSTREAM NUMBER
                         All pipes are RCP
                         unless otherwise noted

                I        EW w/12"-                    -           -      2
                2        EW w/12"                     -           -      Canal to Front Cove
                3        1211                         -           -      5
                4        1211                         -           -      5
                5        YD                           -           -      -
                          2-1211 in                   -           -      6
                          1211 out                    -           -      -
                6        12'1                         -           -      Canal to Long Creek













































                                                      17-1





                                                      POQUOSON DRAINAGE STUDY



                   TOPO SHEET NUMBER 18

                   NUMBER        DESCRIPTION                          TOP           INVERT       DOWNSTREAM NUMBER
                                 All pipes are RCP
                                 unless otherwise noted


                       1         1211                                               6.08         3
                       2         1211                                 -             5.87         3
                       3         YD                                   7.58          6.02         4
                       4         MH w/18" in and out                  7.33          4.67         5
                       5         DI  w/19"x3O" out                    6.81          4.32         6
                                   1211 in                            -                   -      -
                                   1811 in                            -                   -
                       6.        EW w/19"x3O                          6.68          4.10         7
                       7         B=2, D=2, Z=l                        -             4.06         9
                       8         EW w/12"                             5.64          3.89         9
                       9         B=4, D=2, Z=l                        -             3.69         11
                    10           EW w/14"x23"                         5.65          3.48         11
                    11           B=5, D=2.5,Z=l                       -             3.15         13
                    12           EW w/15"                             5.33          3.08         13
                    13           B=10, D=1.5ï¿½, Z=2                    -             2.28         14
                    14           Trapezoidal Ditch                    -             1.94         15
                    15           4811                                 -            -0.56         16
                    16           4811                                 -            -0.82         Brick Kiln Creek
                    17           DI  w112" out                        6.82          4.41         5
                    18           DI  w/12" out                        6.66          4.27         19
                    19           DI  w/12" in and out                 6.66          4.17         8
                    20           EW  w/19"00"        (twin)           6.61          4.03         21
                    21           EW  w/19"00"        (twin)           6.49          3.91         9
                    22           DI  w/12" out                        6.06          3.79         23
                    23           DI  w/14"x23"       out              6.06                -      -
                                   1211 in                            -             3.69         10
                    24           EW w/19"00"         (twin)           7.07          4.39         25
                    25           EW w/19"00"         (twin)           6.81          4.23         11
                    26           DI  w/12"out                         6.93          3.42         27
                    27           DI                                   6.91                -      -
                                   1211 in                            -                   -      -
                                   15" out                                          3.34         12
                    28           B=2, D=l, Z=l                        -             5.77         33
                    29           EW w/15"                             6.15          3.90         33
                    30           EW w/15"                             5.59          3.34         33
                    31           DI w/15"     out                     6.10          3.60         30
                    32           DI w/15"     out                     6.41          4.11         29
                    33           B=6, Z=2, D=1.5ï¿½                     -             2.66         13
                    34           D=3, Z=l                             -             5.80         35
                    35           D=4, Z=.63                           -             5.30         36
m                   36           B=5, D=4, Z=l                        -             4.0          37
                    37           121, PVC                             -             3.04         38
                    38           121, PVC                             -             2.72         39
                    39           B=9, D=2, Z=3                        -             2.70         40
                    40           Ditch                                -             3.60         15
                    41           Ditch                                -             2.11         15
                    42           B=3, D=2, Z=.5                       -             2.66         41
                    43           B=2, D=4, Z=.38                      -             3.56         42





                                                                      18-1





              TOPO SHEET NUMBER 18

              NUMBER      DESCRIPTION                 TOP         INVERT DOWNSTREAM NUMBER
                          All pipes are RCP
                          unless otherwise noted-      -           4.76     43
                44        Ditch
                45        Ditch                        -              -     43
                46        B=3,  D=4, Z=.38             -              -     40
                47        B=2,  D=3, Z=.33             -           4.90     46
                48        B=3,  D=3, Z=.17             -              -     47
                49        B=3,  D=3, Z=O               -              -     48
                50        B=2,  D=.5, Z=1              -           6.02     51
                51        B=2,  D=.5, Z=l              -           5.12     52
                52        B=3,  D=3, Z=.88             -           4.35     53
                53        Ditch                        -           2.32     15
                54        Ditch                        -           5.06     55
                55        B=6, D=3, Z=                 -           4.26     56
                56        3011                         -           -1.70    57
                57        3011                         -           -0.27    Brick Kiln Creek
                58        Ditch                        -              -     Brick Kiln Creek
                59        B=4, D=3, Z=.83              -              -     58
                60        1511 CP                      -              -     61
                61        1511 CP                      -              -     62
                62        1511 CP                      -              -     63
                63        1511 CP                      -              -     Pond
                64        B=6,  D=6, Z=1               -           2.10     62/59
                65        B=5,  D=6, Z=1.1             -           2.37     64
                66        B=6,  D=7, Z=l               -           2.59     65
                67        B=4,  D=6, Z=1.17            -           2.91     66
                68        B=5,  D=6.5 Z=1.08           -           3.08     67
                69        B=4,  D=5, Z=1.3             -           3.53     68
                70        YD                           -              -     71
                71        1511 CP                      -              -     72
                72        1511 CP                      -              -     73
                73        B=2, D=2, Z=.5               -              -     74
                74        1211 CP                      -           5.03     69
                          1211 CP                      -           4.61     69
                75        B=3, D=4.5, Z=.55            -              -     69
                76        B=2, D=4, Z=.25              -              -     75
                77        B=2, D=4, Z=.25              -              -     76
                78        D=.7, Z=l                    -           6.50     93
                79        B=.5,D=.5, Z=l               -              -     77
                80        15" CP                       -              -     77
                81        1511 CP                      -              -     80
                82        DI w/twin   12"  CP          -              -     110
                83        Twin 12" CP                  -              -     82
                84        1211 CP                      -              -     86
                85        1211 CP                      -              -     86
                86        EW w/twin   15"  CP          -              -     87
                87        EW w/twin   15"  CP          -              -     73
                88        B=4, D=l,   Z=O              -           2.89     Brick Kiln Creek
                89        1511 CP                      -           2.40     88
                90        15" CP                       -           2.21     89
                91        End Pipe                     -           3.7ï¿½     90
                92        End Pipe                                 3.7ï¿½     91
                93        B=l, D=2, Z=.5               -           4.39     90
                94        DI                          6.34            -     -
                           2-12" in                    -              -     -
                           1211 out                                3.61     95



                                                        18-2





                   TOPO SHEET NUMBER 18


                   NUMBER       DESCRIPTION                         TOP            INVERT DOWNSTREAM NUMBER
                                All pipes are RCP
                                unless otherwise noted

                    95          DI                                  5.86                 -      -
                                  2-1211 in                           -              2.20       96
                                  1211 out
                    96          1811                                  -              1.@8       -@rick Kiln Creek
                    97          DI w/12"      out                   5.02             3.85       95
                    98          DI w/8" in                          4.66             3.96       97
                    99          DI                                  4.55                 -      -
                                  601 in                              -              4.65       -
                                  81' out                             -              4.16       98
                   100          DI w112" in and out                 4.78             3.00       Brick Kiln Creek
                   101          1211                                  -              5.14       102
                   102          1211                                  -              4.76       103
                   103          1211                                  -              3.64       104
                   104          1211                                  -              2.81       Brick Kiln Creek
                   105          15"   CP                              -              2.90       41
                   106          2.5' Concrete Swale                   -              6.36       41
                   107          1511                                  -              6.29       49
                   108          unknown                               -                  -      107
                   109          1211                                  -              3.70       94
                   110          DI                                    -                  -      -
                                  1211 in                             -
                                  2-1211 out                          -
                                YD
                                  2-12     in                         -
                                  1511 out                            -                  -      112
                   112          1511                                  -                  -      81
                   113          DI w/2-12" out                        -                  -      114
                   114          DI                                    -                  -      -
                                  2-1211 in                           -                  -      -
                                  2-1211 out                          -                  -      74
                   115          12" CMP                               -              5.72       unknown
                   116          unknown                               -                  -      unknown
                   117          D=2, Z=.9                             -              5.93       118
                   118          D=2.9, Z=.6                           -              4.43       119
                   119          2411                                  -              4.03       120
                   120          24'1                                  -              3.46       121
                   121          D=I, Z=2.5                            -              2.00       Oxford Run
                   122          1211                                  -              6.11       93
                   123          1211                                  -              6.27       122





















                                                                      18-3





                                       POQUOSON DRAINAGE STUDY



             TOPO SHEET NUMBER 20

             NUMBER    DESCRIPTION              TOP        INVERT DOWNSTREAM NUMBER
                       All pipes are RCP
                       unless otherwise noted

              I        DI w/15" out              -           -      2
              2        DI                        -           -      -
                        15" in and out stub      -           -      Fore Landing Creek
              3        DI w/18" o.ut             -           -      4
              4        18                        -           -      Fore Landing Creek
              5        DI w/15"  Out             -           -      6
              6        1511                      -           -      Fore Landing Creek


















































                                                  20-1





                                    POQUOSON DRAINAGE STUDY



            TOPO SHEET NUMBER 21

            NUMBER   DESCRIPTION            TOP        INVERT DOWNSTREAM NUMBER
                     All pipes are RCP
                     unless otherwise noted

             1       1511                               -     2
             2       15  Is                  -          -     Front Cove
             3       18'1                               -     4
             4       1811                               -     Front Cove
























































                                              21-1


















                                                                                       JUL                       1'qg2
                                                                                UPDA TE IN VEN TOP                                 OF
                                                                       STPUCTUPES 9                           I/VPPO VEMEN TS

                                           CITY      COUNCIL
                     L., CORNELL  SUPCHEP ............................ ...       MA YOR
                     GORDON C. HEL SEL, JP   ............     ............. CO*UNCILMAN
                     L. HAROLD OUINN.     /P  ...........................  COUNCILMAN                                                             C. K.        DOP ENGINEEPS,            INC.
                     ,JAMES T. HOLLOWAY,    /P ......* ...*... 7 ......... COUNCILMAN
                     W. CROSBY FORREST,    III  ........................   CO  UNCILMAN                                                                115      JEF-F-EPSON A VENUE
                     ROGER N. MESSIER   ................................   COUNCILMAN                                                                 NEWPOP T NEWS,          V-TPGINIA
                     SELVIN )-. WARD, /P   ...........................     COUNCILMAN
                     ROBERT M. MURPHY   ...........................     CITY MANAGER
                                                                                  MA S                        TER
                                                DlqA INA GE s TUD@'
                                        cl T                                       OF                       I-l00U05,,'0N
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