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COOT-AC-T 1990 ALGAL BLOOM REPORTS APRIL 1991 NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES DIVISION OF ENVIRONMENTAL MANAGEMENT WATER QUALITY SECTION All 'prow 17 QK 568 .B55 N8 1991 1990 ALGAL BLOOM REPORT APRIL 1991 NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES DIVISION OF ENVIRONMENTAL MANAGE WATER QUALITY SECTION This report has been approved for release Ken Eagfeson Assistant Water Quality Section Chief Date S1341 US DeDartment of commerce NOAA coastal Services center Library 2234 South Hobson Avenue CD Charleston,. SC 29405-2413 Table of Contents Introduction ...................................................................................................................1 Cape Fear River Basin ................................................................................................9 Catawba River Basin ................................................................................................... is Chowan River Basin .................................................................................................... 24 Little Tennessee River B asin ................................................................................... 3 1 Lumber River Basin ...................................*... -* ...-.*'***'*"**'**""**'**"**"****"****'*** ........ 33 Neuse River Basin ........................................................................................................ 36 Pasquotank River Basin ............................................................................................ 49 Roanoke River Basin ................................................................................................... 52 Tar-Pamlico River Basin ........................................................................................... 54 White Oak River Basin ............................................................................................... 65 Yadkin-Pee Dee River Basin ............. ....................................................................... 67 Summary ......................................................................................................................... 70 References ...................................................................................................................... 73 Figures and Table Figure 1. Algal Blooms in North Carolina, 1990 ............................................3 Figure 2. Algal Bloom Locations on the Lower Neuse River, 1990 .......4 Figure 3. Algal Bloom Locations on the Lower Pamlico River, 1990...5 Table 1. Bloom Summary for 1990 ....................................................................6 Appendix 1. Algal Bloom Report Form ........................................................... 74 Appendix 2. Algal Blooms 1984-1990 ..........................I................................. 75 Appendix 3. Descriptions of Several Algal Classes .................................... 93 NTRODUMON The water quality algal bloom program was initiated in 1984 to document suspected algal blooms with actual biovolume and density estimates, provide water quality data on surface waters not included in the ambient network, aid in fish kill investigations, and detect problem dischargers or other sources of nutrient enrichment in surface waters. Although information collected and analyzed is limited in scope, it can often be useful in documenting the effect of excessive nutrients. Reported algal blooms have been increasing yearly from 16 in 1984 to 87 in 1989. During 1990 approximately 78 reports of algal blooms were received with algal counts conducted on 134 samples. Since 1984, bloom reports have come from all seven regional offices with blooms occurring predominately. in the coastal plain and piedmont regions from ponds, creeks, rivers and estuaries. Figure I illustrates the location of all documented algal blooms in North Carolina during 1990. The Neuse and Pamlico River algal, blooms are depicted more precisely in Figures 2 and 3 since the majority of algal samples were collected from this area. Information obtained from the algal bloom program functions as a useful aid in resource management. Algal bloom data are derived primarily from regional personnel. C.ontinued cooperation by regional staff has added to compilation of bloom data, although additional coverage and documentation in some problem areas are greatly needed. This information is necessary to assess water quality conditions and to determine those waterbodies potentially requiring nutrient controls. Phytoplankton populations are dependent upon nutrient availability and other ecological factors as light, temperature, salinity, organic matter, grazing and currents. Maximum algal growth occurs w-ith an optimum of these conditions. Accelerated eutrophication often stems from anthropogenic sources, When abundant nutrients are introduced into a system, algal growth is accelerated, resulting in algal blooms, causing degredation of water quality, creating taste and- odor problems and fouling recreational areas. In addition, some species of dinoflagellates or blue-green algae may be toxic. Dominance by large numbers of nuisance blue- green algae can cause discolored or foul smelling water, often interrupting the food chain by displacing more desirable types of algae. At night, respiration of large numbers of algae results in oxygen deficient waters, creating a stressful environment for aquatic organisms. Furthermore, when large populations of algae die off, bacterial decomposition and respiration often deplete the water of oxygen sometimes resulting in fish kills. Frequently algal blooms occur without visible signs. Using metered data, these blooms can be detected by high pH and dissolved oxygen in the photic zone. During the day, oxygen is produced by photosynthetic algae resulting in high daytime dissolved oxygen levels. Conversely, at night, during algal respiration, oxygen is consumed resulting in low photic zone dissolved oxygen levels. Elevated pH in the photic zone is aresult of a shift in the carbonate cycle during photosynthesis. The algal bloom reporting procedure entails collection of phytoplankton, nutrients, chlorophyll, physical/chemical data and a completed 'Algal Bloom Report Form' (Appendix 1) along with a map marking the bloom location. The 1990 Algal Bloom Report contains a summary of each bloom report arranged by river basin, along with phytoplankton information. Bloom discussions include dominant species when relevant, algal biovolume and density estimates and possible reasons for the bloom's occurrence. Following each bloom summary, an assessment was made as to whether or not actual bloom conditions existed, based on biovolume, density and chlorophyll-a concentrations. Usually, -an algal sample with a biovolume larger than 5,000 mm3/m3, density greater than 10,000 units/ml or chlorophyll-a concentration approaching 40 ug/I (the North Carolina state standard) constitutes a bloom. Table 1 contains nutrient, chemical, physical and phytoplankton data. Appendix 2 includes an overview of all bloom reports received since 1984, along with pertinent algal bloom data including phytoplankton biovolume and density estimates, chlorophyll-a concentrations and type of bloom. We can also provide further information on algal blooms and exact locations if requested at (919) 733-6946. Appendix 3 summarizes several algal classes which are frequently mentioned in the report. As the Division of Environmental Management moves to managing water quality problems from a basinwide approach, information from algal bloom reports will be furnished in whole basin reports rather than in end of the year algal summary reports. Memorandums concerning algal blooms will continue to be furnished to the individual data collecters when requested. 2 z F I GURE 1. ALGAL BLOOMS I N NORTH CAROL I NA, 1990 0 & 00 0 0 % * 0 0 0 %* 0 00 0 0 4 z 3 FIGURE 2, ALGAL BLOOM LOCATIONS ON THE LOWER NEUSE RIV 0 VANCEBORO LITTLE SWIFT CR. SWIF CR. NORTHWEST CR TRENT CR. BA R. BACHELOR C UPPER ROAD CR. BAYBORO 0 NEW BERN I BROW R. GOO E CR. BROAD C TRENT R. BRIC CR. 2@@EARD CR. KER5HAW R I.T 3 GREENS R. MI CR. DA ON R. NEU5E RIVER OTTER CR. TUCK R CR. N SLOCUM C DAM R.. HANCOC R. C CR. LONG CR. BACK C ALGA CLUBFOOT CR. FIGURE 3. ALGAL BLOOM LOCATIONS ON THE LOWER PAMLICO RIVE ROAD CR. WASHINGTON v- PANTEGO C BRO&D CR. CHOCOW I ER BAT R. PUN CR. PUNGO R. BAY CR OS t ORT CR. SLADE CR. FORI SCUE C Ln BLOU 'S CR. DURHA CR PAMLICO RIVER OSE BAY SOUT C DON CR SWANQUARTE@ BAY N 0 AURORA GOOS C MOUSE HARBOR ALGAL BLOOM IDDLE BAY TABLEI. ALGAL BLOOM SUMMARY FOR 1990 STATION DATE ICHL-A BIOVOLUME DENS17Y NH3/4 TKN IN02/3 TP P04 TEMP CONDUCTIVfTY SALlNrrY FISH KILL. BLOOMTYPE uQ/I mm3lm3 unitslml mall ma/l I ma/l ma/l mg/l mg/l su c umhos ppt CAPE FEAR STEWART-I _900515 @50 113537 73017 0.12 1.5 0.03 -1.2 0.08 11 9.14 130.5 YES. TRAC VOL STEWART-1 900802 6400 350745 85597 0.12 20 0.01 1.2 NS ------------------------------------------- YES, CYA-ANAB SPI. APHA FLO, ANAC CYA STEWART-1 900809 400 N/A 0.23 3.9 0.04 .0.55 1 1.8 18.6 127 1 YES, CYA-ANAB SPI,CHL, EUG BACKGROUND-1 900802 37 10567 25854 0.05 .0.7 0.01 10.08 INS ------------------------------------------- YES_CHLE&IGBAC,CYA H P CFrY LAKE- 900705 INS 14464 17468 INS ------------------------------------ -------------------------- I------- YES, CYA-ANA13S RAC. ANAB LEV HIGH PIT LAG-1 900705 INS 163388 32142 INS ----------------------------------------------------------------------- YES, GHL-STAU. SCEN QUA OAKHOLLOW-1 900705 INS 12518 55200 NS -------------- -------------------------------------------------------- YES, CYA-ANABS RAC. ANAB LEV --- F1.2 [43 3.4/2.2 17.5 12 YE MBN-D2 (LATH) 900710 12l 11134 2811 0.32 11.1 1 8.2 820 S. FIL ALGAL MATS DEEP-OOL 900711 126 13503 8245 NS ------------------------------- 6 7.3 31 NO. BUr CHL-CARTERIA SP ROCKY-2A 900726 44 1`1889 13451 0.02 1.3 14.6 0.49 0.35 10.6/8., 8.5/8-1 2-7/24.5 355/347 YES, CHI, CRY, BAC F=KY-1 900803 32 1662 6594 0.14 0.9 10.03 0.13 <.01 _ 3.6 6.7 22.3 103 YES, CHL, CRY, CHR ROCKY-2 900803 44 1250 5590 0.42 2 16.2 0.88 0.69 1.1 6.3 23.1 558 YES@ CHR, CYA ROBESON CR 1: 9008 13 23 3324 25854 0.03 0.7 10-04 0.11 0.01 12.2/12 8.918.E 29.5/29.5 282/284 YES, CYA, CHL. CRY, BAC 0.04 ---T9 4-0.86 0.74 NEW HOPE CR 900814 8 3211 15008 0.7 0-0/8-0 9-0/9.( 27.5/27.51384/390 NO, BUT CYA F MOSER POND 900e2l ISIS N/A ------ ------------ ----------------------------------------------------- YES, CYA-ANAB POR,SPI, BACTERIA LAKECEDARHO` 900828 INS ------------------------------------------------------------------------------------------------- YES, CYA-ANAB SUB, OSCI SP JORDAN(CPFo 900913 174 1102611 1499604 0.17 11 10.04 .10.17 10.01 14.6/2.4 16.9/7.1126.9/26.81174/178 YES, CYA ANAC CYN OSCI GEM, CHL,EUG ATLANfrC OCE) 900723 NS N/A --------------- NS ---------------------------------------------------------------------- FIL CYA-OSCl ERYTHRAEA CATAWBA I I . I BRAGG POND 900614 10 NfA --------------- 0.29 1.22 <.05 0.06 7.8 30.5/27 70 YES YES, CHL-CLOSTERIOPSIS GRANTS-1 900621 14 5037 14658 0.03 0.5 0.01 0.07 _ 11.6/0A 8.9 30 126 YES_EUGG _CHL,CRY WISCNSLAKE 900730 10 813 16201 <.01 0.3 0.01 0.03 <@01 10.0112 5.7 30/26 YES N:) STEELECTIEEK 900801 5 3712 11572 3.5 7.6 330 NO. BUT CYA SOUTH FORK P. 900820 1900.194116 11388760 0.08 8.8 0.04 2.5 20 8 33 YES YES, CHL-CHLOROGONIUM EUCHLORUM CROWD-15A 900905 35 112 51 156948 10.02 10.6 10.01 0.11 0.01 12.3 131.1 18.9 177 YES. EUG. CYA-MER TEN LAKE NORMAN- 901003 N S-------------------------------------------------------------------------------------------------- YES, CYA-ANAG CYA L NORMAN (Dffl 90 10 16 6 695 3668 0.05 0.2 10-08 0.01 1 18.4/8 18.5 124/22 161/62.5 N:) COMMSCOPE-1 901114 3500 1051475 38829 0.29 20 10.03 1.5 NS ------- ----------------------------------- YES, CYA-COELOSPHAERIUM NAEGELIANUM CHOWAN I I I I CHOWAN-9 900612 14 305 1002 0.04 0.5 0.18 0.06 0.01 INS ------------------------------------ N:) 2053632 900612 12 279 - -- 681 0.03- 0.4 0.23-0.05- 0.01- 6.9/6.9 6.8 23/25 73175 ND 2053652 900612 13 666 1380 0.07 0.3 0.15 0.06 0.01 7.3/7.3 7 24/24 82 N:) ARROWHEADA 900619 15 11656 13695 0.02 0.5 0.07 0.07 <.01 8.8/6.1 7.8/7.: 28.3/24.8 78/72 YES CYA. CHL, CRY, BAC CATHERINE-i 900619 24 5330 5066 0.02 0.5 0.04 0.06 <.011 9.2ti.9 7.5/6., 29.1/24.3 67183 YESCYA CHOWAN-14 Qoo6l9 12 3034 5401 0.02-0.5 0-1- -0.07 <.Ol 8.4/5.9 7.1/6., 28.9/25.4 66/67 IND INDIAN-2 900619 11 3390 5590 0.01 10.5 -0.08 0.08 <.01 7.1/1.7 .7.2/6.: 28.8/24.4 74/100 N:) ROGKYHOGK-1 900619 12 6857 10307 0.02 0.4 0 '02 0 '07 <.Ol 8.6/7.3 7.9/7. 27.2/26.2 79 YES, CYA 205360615 900619 9 1684 2533 0.01 0.5 0.09 0.08 <.01 8.4/6.2 7.1/6.. 28.5/25.4 67/70 INO 2053632 900619 .10 .3475 4076 0.02 0.4 0.11 0.06 <.01 8.1/7 7.1/6 26.1/25.5 77/79 N:) 205363575 900619 16 114765 12438 0.03 0.4 0.07 0.06 <.01 8.2/6.5 7.3/7 26.6125.4 78178 YES,CYA 2053652 900619 6 111552 8860 0.02 0.4 0.09 0.06 <.01 a Ilir a 7 lir 2 YES, CHLMD. CRY 2053652005 900711 NS 13095 3419 N S ----------------------------------------------------------------------- YES, CYA-ANAB POR, CRY CATHERINE-7 900712 350 32805 8`122 NS ----------------------------------------------------------------------- YES. CYA -ANAB POR CHOWAN-5 900712 250 69869 15897 NS ----------------------------------------------------------------------- YES, CYA -ANAB POR INDIAN-8 900712 200 23698 6551 NS ------------------------------------------------------------------------ YE , CYA -ANAB POR 2093632 900712 120 31330 8036 0.27 11 10.01 10.11 1<.01 10.2/7.619.1 130/29 180/80 YES, CYA -ANAB POR 2 3 52 900712 17 33::3 0.18 10.5 10.02 -- 10.08 -- [email protected] -- 17.316-.5.17.5 1-29-12-8---- 8519-0 ----- N:) A 19= .900712 .270 122 !::;Ol INS ------------- - ----- ..... ------ - ---- - - - ---- - YES CYA NAB POR 00 7 0 0 kO7 90072 6 0011 03 900803 9008 13 9008 14 5590 3 'u" cOll 8-617-3 7 .09 0 08 .1' 0 06 10 07 @OO 7 0.06 <.o@ 2 33 1 7 4 0 P76 @.oj 7 12438 .01 7 a8 60 0 -7 09 0 0 6 TABLE1. ALGAL BLOOM SUMMARY FOR 1990 STATION DATE CHL-A BKNOLUME DENSITY NH3/4 TKN IN02/31 TP P04 m pH TEMP CONDUCTIVITY SALINITY FISH KILL, BLOOMITYPE ug/I mm3/m3 units/ml mo/I MUM ma/I MOM MUM mg/l su c urnhos ppt INDIAN-8 900726 35 7142_ 3474 0.29 0.9 0.06 0.09 _ 7/0.1 7.1 30/28 108/143 YES, CYA -ANAB POR, CRY 2053632 900802 14 5179 2180 0.18 0.6 0.15 0.11 0.01 5/3.8 6 27/28 77/75 YES 'CYA -ANAB POR, CRY 2053652 900802 16 6245 2725 0.14 0.6 0.06 0.07 <.01 6.1/5.8 .6.4 27/28 77/75 YES, CYA -ANAB POR, CRY CHOWAN-ROCK 900802 100 1110923 2306 0.14 1.2 0.13 0.18 0.03 16.5/4.5T6.1 129/28 174/71 YES, CYA -ANAB POR ANAC CYA CHOWAN-3 900912 370 INIA 10.02- 2.9 0.06 0.3 c.01 INS ------------------------------------ YES.CYA-ANAG CYA 2053574 901016 6 5109 699 0.05 10.3 0.08 0.08 0.01 6.8/6.9 6.2 23/23 83/83 YES, CHLIVID, CYA 205360615 .901016 4 1388 256 0.04 0.4 0.09 0.08 0.01 6.9/6.8 6.3 123/23 83/83 N:) 2053632 1901016 6 3652 1077 0.05 0.4 0.11 0.09 0.02 5.6/5.3 6.@123/24 62/61 N:) LITTLE TFNNESSEE I SANTEETLAH-11900620 27 10780 2492 0.3 0.8 0.02 0.1 0.01 NS ------------------------------------ YES, CYA-ANAB POR, ANAC CYA LUMBER I I I I ECHOLAKE-1 1900227 1 .70 934 .0.2 0.5 10.26 0.02 [email protected] 110 16.9 111 138 ND LAKE PINEHURd 900718 3 710 833 0.03 0.3 @.01 <.O I NS -------------- ---------------------------- ND NEUSE I I GARNER POND 1900228 130 8306 4944 0.04 0.3 0.03 0.12 -c.01 13.2 6.5 - 12.1 74 YES, EUG GOBBLE PCND 900315 17 N/A 0.05 0.4 0.02 0.05 <.01 8.6 6 19.3 86 FILGREENS WNDL-D2 (L WE 900705 270 58404- 13014 0.01 5.1 <.01 0.39 15.gto.@ 8.1 28 110 YES. CYA-ANAB, APHA FLO, ANAC CYA VET S-1 900812 4800 96001 61722 NS ------------------------------- 5/4.1 7.9/7.6 27.5/26.4 94/95 YES YES CYA-ANAC CYA VET S-2 900812 140 .38055 24339 10.79 2.7 0.03 10.98 10.05 4.8/0.1 7.6/6.6 27.6/25.3 91/99 fYES YES EUG, CYA YET S-3 900812 88 115001 18459 0.74 2.6 0.03 10.86 0.06 4.1 7.6 .26.4 93/108 YES YES EUG, CYA-ANAC CYA ENO-1 900821 250 130120 6580 0.05 0.9 0.46 0.23 16.1/2.5 7.2/7.2129.5/29.5 170/205 YES, EUG ENO-2 '900821 83 130325 6359 0.05 1.1 0.14 0.28 15.913.8 7.1/6.9 27.5 27.5 220/228 YES, EUG NEU010 900912 33 15271 12578 0.02 0.7 0.06 0.11 <.01 8.610.2 7.1/6.4 28.8/25.5 185/205 YES. EUG, CYA ALLIGATOR-5 ( 900315 140 135788 33191 <.011 1.3 <.01 0.09 17.6/10 8.8 20.6/16.5 9.0/10 YES DIN-PRO MIN CHAPPEL-7 (B 900315 71 12178 13364 @.Oll 0.8 <.01- 0.06 -- -- 11.2/11 7.4 22/22 17.7.2 YES DIN-PRO MIN, CRY RACCON-2 (B 900315 56 7414 11005 0.13 0.8 k.01 0.08 9.8/9.6 7.1 22/22 7.5/7.5 YES DIN-PRO MIN, BAC TRENT-1 (BAY 900315 110 25910 24980 @.Cll 0.9 1..01 0.06 <.011 - -9.3/0.4 7.1 17/13.5 9.2/10.2 YES DIN-PRO MIN VANDEMERE-8 900315 7 1414 1834 0.07 0.7 10.25 0.03 910.2 6.7 24/13 5.5/9.8 N:) NEU139 1900319 140 4954 19128 0.01 0.6 0.03 0.09 0.02 .12/5.6 8 16 8400/17700 5.0/11 YES, OIN-PRO MIN, HET TRI, BAC-SKEL POT 25 1044 11398 0.01 0.4 <.01 0.06 0.01 10/5.9 7280/11660 5. YES, BAG-CYCL SP3, DIN PERI TRO NEU139 900524 0/7 NEU131X 900524 120 14710 11049 ..0.01 0.5 0.01 0.07 0.01 [email protected] 8.7 123/22 3640/11130 2.0/7 YES, DIWGYM NEL.GYR AURCRY NEU131F 900627 16 11066 10365 0.02 0.6 0.1 0.06 0.01 9.8 /0.2 /28 312819400 2/5.5 YES. BAC-CYCL SP3, CRY,CHR 2092586 900627 27 113190 27077- 0.01 0.5 <.01 0.07 0.02 Ig/.6 8 129/28 5520/8930 4.0/7 YES, XAN-OLISCAR.CRY.CHR ORIENTAL-LAG 900718 90 13773 19041 NS ----------------------------------------------------------------------- YES, CHL-CHLLA, CYA ANABS RAG NEU131X 900724 23 2957 18779 0.02 0.5 <.01 0.09 0.04 19.5/0.1 8.7 31/29 14960/28520 10.0/18 YES, DIN, CRY NEU139 .900724 21 8868 12578- 0.02 0.4 I<.01 0.1 0.05 18.7/2.4 8.6 30/29 -- 20250/24380 13/16 YES, DIN, CRY, CYA-PHOR ANG NEU131F 1900725 34 2438_ 3756 0.02 0. @60. @O6 0.15 0.03 8.7/0.1 8.3 29128 92 -00/24440 9.0115 YES, DIN-GYR AUR,BAC,CRY NEUSE-12 900817 13 1046 3052 0.01 0.6 [email protected] 0.13 0.08 6.710 8.4--- 28/28 21000/28500 12.0118 YES NZ) HARTPOND 900926 NS N/A --------------- NS ------------------------------- 7.1 6.7 19 112 YES YES, CYA - ANAB PORT GREENSPRINGS 900827 29 .2223 - 13975 0.07 0.5 0.36 0.2 0.09 7.9/8 -8.2 31/30 29-00/3600 2.012.0 YES, XAN-OLIS CAR CRY GREEN SPRINGS 9 0 0 8 2 7 26 11278 36102 0.06 0.3 .34 0.21 0.1 7.9/8 8.2 131/30 2900/3600 2.012.0 YES, XAN-OLIS CAR CRY GREENSPRINGS 900827 51 11984 35170 0.13 0.5 0.08 0.32 0.22- 7.9/8 8.2 31/30 290013600_ 2.0/2.0 YES, XAN-OLIS CAR, CRY NEUSE-2 900916 25 6409 66381 0.03 0.6 <.01 0.23 0.18 111.1/0. 8.5 28/27-- 11280/16800 7.0/10 IYES YES, BAC-CYCL SP3, CYA NEUSE-4 900916 25 4960 90488 0.03 0.6 <.01 0.22 0.14 10.4/4.: 8.8 28/27 18800119200 12.0/12 IYES YES. BAG-CYCL SP2. CYA NEUSE-7 900916 22 10416 84898 0.03 0.6 -- 0.01- 0.16 0.16 9.5/0.2 8.7 27/27 12000/15360 7.0/9.5 IYES YES, BAC-CYCL SP3.CRY 2092162 900926 39 2485 145419 0.03 0.8 _0.29 0.17 0.08 1 Ofl.5 8.3 22/22 7950/74310 5. o YES YES, DIN, BAC-CYCL SP283 I 2L NEU131F 900926 53 19 ZR .. L @29967 0--o-lAo.7 1<.01 0.2 0.09 10.5/2A 8.7 2-2/22 10600/16960 611 @g 5 YES YES BAC-CYCL SP2 NEU131X 900925 P 15474 1172591 [email protected]@,.01 0.16 0.1 10 4/2.1:@.7 122/23 115900/21840 10.0/14 YES YES, BAC-CYCL P2 --- MILL CR-B 901204 117 17776 19549 10.02 10.5 I<.01 10.08 0.02 71 16 16 YES, DIN-PRO MIN TABLE 1. ALGAL BLOOM SUMMARY FOR 19 STATION DAT FISH KILLI E CHL-AlBIOVOLUME DENsrrYlNH3/4 J@@0271@3 __;TPI P04 [0 13H MP CONDUCTIVITY SALINITY BLOOMTYPE un/l mm3/m3 units/ml ma/I 11 m /I su C umbas pp, MILLCRMAR 901204 140 88369 79133 0.02 1.3 <.01 0.21 0.03 7.8 6.8 16 16 YES, DIN-PRO MIN PASCIIJOTANK L ALBEMARLE-A 900417 NS N/A ---------------- NSW@ - ------------------------------------------------------------ FIL CHL-CLADOPHORA SP RCANOKE-B 1900417 NS N/A --------------- NS ------------------------ ------ 17.5/7.4 6.5 18/16 91/94 nL BAC-MELOSIRA VAR, CHL SPIROGYRA, U ALB BEACH 900706 NS IN/A ------ -------- INS ------------------------------------------------ 28.5 FIL CYA-TOLYPOT14RIX SP 2081185 (KEND 900712 NS 130400 2030 10.01 10.6 10.02 10.15 0.02 17.8 17.3 30 117 YES, CHLMD. CRY 208117810 900820 14 14456 14761 0.02 10.5 10.02 10 05 10.01 18.9/2.2 17.3 31130 3036/4500 2,0/3.0 YES, XAN-OLIS CARCRY,CYA ROANOKE I I I I I I I ROANCKENETS 900314 N/A ISIS -------------------------------------------------------------------------------- FIL BAC - MELOSIRA FTA TE rAR-PAMLICO i I I I I I I GREENVILLE LIT 900719 NS N/A --------------- N S ----------------------------------------------------------------------- RL CYA-LYNG NANA, OSCI CHL,OSCI GEM GREENVILLE Ur 901008 ISIS NIA --------------- NS ---------------------------------------- 7.2 23 198 FIL CYA-LYNG NANA, OSCI SP. CHL-CHLA S 900305 .52 1 1 F_ YES, BAC-SKEL COS CHOCO,l 7393 26028 0.02 0.4 0.04 10.12 (@.01 13/12.4 8.7 12.0111 2271243 BACK CR-92 900525 NS 16085 30046 ISIS ------------------------------- 8.918 7.8 23/23 1.5/1 YES, DIN MBc 900525 NS 12000 33190 NS ------------------ 9.2/7.8 7.7 24/23 1.5/11.5 _YES.XAN.BAC,CRY MOB 900525 NS 1641 10132 NS ------------------------------- 9.8/7.7 8_ 24/23 1.5/1.5 YES, XAN,BAC,CHL PAM-BATH CR 900525 NS 11897 28474 NS ------------------------------- 9.2/6.5 7.2 22/22 1/2.5 YES, BAC.CRY TAR057G 900604 23 19955 46641 0.02 0-5 0.06 0.11 0.02 10/4.6 8.7 126/23 102919360 0.5/6 YES. DIN. BAC,CRY TAR057GO85 1900604 15 1713 26727 0.02 0.6 <.01 0.13 0.01 19.8/4.4 8.9 27/24 134/6630 0.514 YES, BAC-CYCL SP2 2084534 900604 34 113577 88217 0.05 0.5 <.01 0.12 0.03 19.4/7.6 8.7 27/26 297613087 2/1.5 YES, XAN-OLIS CAR.BAC-CYCL SP2 CHOCO,t 900604 31 12996 70224 0.01 0.7 0.01 0.16 0.0 f 19.519.8 8.7 26126 1471147 YES, BAC-CYCL SP3, CRY co ENMEHARI) 900612 25 15780 97126 NS ----------------- ------------- 110/9.5 8.3-16 - 18.5 YES, BAC - CYCLOTELLA SP 2 & 3 TAR057G 900718 62 6602 17017 0.04 0.5 0.01 0.65 8.2/1.7 7.2 30/27 6.4/7 YES, DIN,CYACRY PAM-WASH 900718 50 N/A ------ -------- 0.02 0.6 0.08 0.11 12.0/5 8.4 36/34 YES, CYA-MER TEN BREAKING UP PAM-2A 900724 20 21354 2-9347 0.03 0.06 <.01 0.18 8.2/7.1 7.9 29 5/5.9 YES YES, DIRCYA PAM-413 900724 27 3739 11412 0-.02 0.6 <.01 0.15 8.3/0.2 7.5 __29128 5.8/9.2 YES YES, DIN.CYA PAM-5C 1900724 36 13414 21225 0.03 0.6 c.01 0.1 8.5/0.2 8 29128 YES YES, DIN,CYA PAM-71) IgOO724 23 3414 24980 0.02 0.5 <.01 0.12 7.8/0.3 8.2 30/27 5.6111.8 YES YES. DIN.CYA PAM-10E 900724 85 .36260 25675 .0.02 .0.6 1c.01 .0.3 J9.816.2 9.6 31/28 7.2/7.2 YES YES, DIN.CYA PAMLIGO-RACP 900726 NS IN/A ------ -------- Ns ----------------------------------------------------------------------- ICRAB KILI FIL RHOD4COMF'SOPOGON COERULEUS PUNGOCR-2 900801 62 11405 14616 0.02 0.7 c.01 0.09 7.5/3.5 7.9 30128 7/7.5 CRAB KILI YES, DIN.CRY,CYA PUNGOCR-5 900801 28 2559 12985 0.011 0.6 <.Oi 0.07 8/0.1 8.1 29127 7.9113. 1 CRAB KfL( YES, DIN.CRYCYA PUNGOCR-8 900801 27 2634 10248 0.02 0.6 c.01 0.06 8.7/0.6 8.5 29/28 6.5/10.2 CRAB KILI YES, DIN.CRY.CYA PUNGO CR,9 900801 51 14505 12461 0.02 0.6 @.Oll 0.07 8.5/0.1 6.3 30127 5.2/11.5 CRAB KILI YES, DIN.CRY.CYA 2084519505 -900802 8 1394 13844 0.04 0.7 0.02 0.06 7.7/2.4 6.8 29/28 5.2/6.2 YES,XAN.CYA,DINCHRBAC BROADCREEK 1900815 NS N/A ------ --------- ISIS ------------------------------------------------------------------------ MACRO ALGAE-NITELLA SP. PAMLICO-5 900027 60 15517 47515 0.04 10.7 1..01 10.25 1 111.3/7.f 8 29.7/28.2 4.3/4.2 CRAB KILI YES.DIN.CYABAC PAMLICO-6 900827 32 4393 33278 0.02 10.6 [<.01 10.37 1 18.7/0.1 8 29.3/27.2 .8/12.3 CRAB KILt YESDIN.CYACRY SUMMER-Al 900827 NS_ 4766 30134 NS ---------------------------------------- 7.9 ICRAB KILt YES.DIN.CRY.BAC,CYA PUNGO-1 900829 31 237S 38780 01 0.11 9.5/0.3 8 31128 7.0/12 IYES YES,DIN,CYABAC 6057 0!21 .5/1.5 6.8 1 9.5/10.61 YES, DIN-OXY MAR HERRING-A 901219- 21 2853 5 oi ?@-!:05!01 0.15 2 4/13 WHITE OAK 209317585 1901002 144 11461 7570 0.16 0.24 0.14 0.4 7 2 29000 7 YES, CHIR-OCHIR SP, BAC-MELOSIRA VAR YADKIN I DUTCHMAN-1 900201 16 182 442 N ----------------------------------------------------------------------- N:) HANES-1 900725 90 13265 120962 0.14 16.4 1<.01 3.1 1 Lo - a 7.2 127.5 f YES. CHL-ANKI FAL MI HANES-2 900725 18 12684 1 L922 10.04 10.7 [email protected] 0.08 110.1 18.6 127.5.- 1 NO. BUT ENRICHED 57 OH 0 W01 CAPE FEAR RIVER BASIN ........... J. Stewart and Background Ponds, Randolph County Sampled by S. Knight 900515, 900802, 900809 Water quality samples were collected from Stewart Pond during May and August in response to a. complaint from the landowner. This pond receives discharge from an upstream wastewater treatment plant. During sampling in May, high DO (11.0 mg/1) and pH (9.1) levels were detected. The elevated dissolved oxygen represented supersaturated conditions which result when photosynthetic activity is increased in the presence of large numbers of algae. Phytoplankton analysis confirmed the presence of an algal bloom with elevated biovolume and density estimates comprised of 99% euglenophytes. A ubiquitous euglenoid, Trachelomonas volvocitia, which is commonly found in ponds, dominated the sample. Large numbers of euglenoids are often indicative of organic enrichment. A similar euglenophyte bloom occurred in Stewart Pond in September of 1988. During August, water quality samples were again collected because of the presence of persistent algal blooms. On August 2, an algal bloom dominated by Anabaena spiroides and A12hanizomenon flos-aguae, both cyanophytes, occurred in Stewart Pond. Another buoyant blue-green, Anacystis.@yanea, was also prevalent in the pond sample. These buoyant algae created a bluish-green scum covering the pond's surface. On the same date, Background Pond, which is located near Stewart Pond, was sampled for comparison since it does not receive wastewater discharge as does Stewart Pond. Background Pond contained algal bloom levels dominated by several classes of algae including chlorophytes, bacillariophytes, euglenophytes, and cyanophytes. A week later, Stewart Pond was. sampled after rainfall events. The sample contained a massive bloom of cyanophytes, dominated by Anabaena 'SDiroides. Chlorophytes, and euglenophytes were also abundant. Water quality samples collected during May and August show that Stewart Pond supported algal bloom levels of algae along with astronomical levels of chlorophyll-a (350-6400 ug/1) and excessive nutrient concentrations. Total nitrogen levels ranged from 1.53' to 20.01 mg/I while total phosphorus measured 0.55 to 1.2 mg/l. Although Background Pond also contained algal bloom conditions, they were not nearly the magnitude that was found in Stewart Pond. 10 The close proximity of the upstream wastewater discharge above Stewart Pond or possibly non-point source runoff may be contributing nutrient inputs to which the phytoplankton were responding. Unless the source of nutrients is controlled, recurring algal blooms are probable. Stewart Pond 900515 Total Biovolume = 113,537 mm3/m3 Total Density = 73,017 units/ml. Chlorophyll-a = 350 ug/l Algal Bloom = Yes Stewart Pond 900802 Total Biovolume = 350,745 mm3/m3 Total Density = 85,597 units/ml. Chlorophyll-a = 6,400 ug/l Algal Bloom = Yes Background Pond Total Biovolume = 10,567 mm3/n,3 Total Density = 25,854 units/ml. Chlorophyll-a = 37 ug/l Algal Bloom = Yes High Point City Reservoirs, Forsyth County Sampled by D. Molnar 900707 Three reservoirs near High Point were sampled because of an apparent algal bloom. Blue-green algal blooms dominated by Anabaenol2sis.raciborskii and Anabaena levanderi occurred at High Point City Lake and Oak Hollow Reservoir, while High Point Lagoon contained high numbers of green algae. High Point City Lake Total Biovolume = 4,464 mm3/m3 Total Density = 17,468 units/ml. Chlorophyll-a = not sampled Algal Bloom = Yes High Poi nt Lagoon Total Biovolume = 63,388 mm3/m3 Total Density = 32,142 units/ml. Chlorophyll-a = not sampled Algal Bloom = Yes Oak Hollow Reservoir Total Biovolume = 2,518 mm3/m3 Total Density = 55,200 units/ml. Chlorophyll-a = not sampled Algal Bloom = Yes Latham Lake (MBN-D2) Alamance County Sampled by G. Price 900710 1325 Algal bloom samples were collected from Latham Lake during ambient lakes monitoring. Thick algal mats were prevalent on the lake's surface. During sampling at midafternoon, low dissolved oxygen concentrations ranging from 3.4 mg/1 on the surface to 2.2 .mg/l at 1.5 meters depth were found. An elevated conductivity of 820 uhmos was also present. The town of Mebane's wastewater tre*atment plant is located approximately one mile upstream. Similarly, elevated 'conductivities are often associated with wastewater treatment plant operations. Quantitative phytoplankton counts revealed moderately low algal biovolume and density estimates. The corresponding chlorophyll-a concentration was moderate at 21 ug/l. Phytoplankton growth was perhaps being limited by shading or some other factor. Nutrient levels in Latham Lake were excessive with total nitrogen, total phosphorus and ammonia/ammonium reaching 5.9, 1.1, and 0.32 mg/l, respectively. Because of hypereutrophic conditions in Latham Lake, Mebane will not be able to expand its treatment plant facilities. In order to expand in the next few years, the town plans to drain Latham Lake. Total Biovolume = 1,134 mm3/m3 Total Density = 2,811 units/ml. Chlorophyll-a = 21 ug/l Algal Bloom = Yes 12 Deep River above dam at Coleridge, Randolph County Sampled by S. Knight 900711 A run of the river impoundment on the Deep River was sampled for algal blooms prompted by complaints of reddish colored water. A quantitative algal count was conducted and the phytoplankton sample's biovolume, density and chlorophyll-a concentration were found to be approaching bloom levels. The algal sample was dominated in biovolume by 87% chlorophytes with Carteria spp. dominating the sample. This algae may have been responsible for the reddish colored water observed. Total Biovolume = 3,503 mm3/m3 Total Density = 8,245 units/ml. Chlorophyll-a = 28 ug/l Algal Bloom = No Rocky River, Chatham County Sampled by E. Williams 900726 1630 The Rocky River was sampled because of a pea-green color. A bloom of chlorophytes, bacillariophytes and cryptophytes occurred in this slow flowing' portion of the river. Excessively high nutrient levels were feeding the algae. The high corresponding chlorophyll-a concentration confirmed algal bloom conditions. Total Biovolume = 1,889 mm3/m3 Total Density = 13,451 units/ml. Chlorophyll-a = 44 ug/l Algal Bloom = Yes 13 Rocky River, Chatham County Sampled by K. Lynch, C. Smith 900803 0630 The Rocky River was sampled after citizens expressed concern that Siler City's wastewater treatment plant was adversely affecting the Rocky River and contributing to algal blooms. The wastewater treatment plant discharges into Loves Creek which enters the Rocky River approximately a quarter of a mile below US Highway 64. Bloom samples were collected above and below the discharge. Nutrient analyses revealed elevations in total phosphorus at both sites sampled, while high levels of total nitrogen and ammonia/ammonium were found at Rocky-2, below the confluence with Love's Creek. Moderate phytoplankton densities were found at both stations. Because of the slow-flowing nature of the Rocky River during the summer, free-floating phytoplankton populations were, allowed to build up more than would be expected in a faster flowing creek. At the upper site, Rocky-1, algal classes were dominated by chlorophytes, chrysophytes and cryptophytes. Downstream at Rocky-2, chlorophytes, chrysophytes and cyanophytes dominated the sample. The filamentous blue-green, Oscillatoria chlorina, which comprised 29% of the biovolume is a pollution tolerant algal species. In addition, high chlorophyll-a concentrations were detected at both sites. Rocky-1 Total Biovolume = 1,662 mm3/m3 Total Density = 6,594 units/ml. Chlorophyll-a = 32 ug/1 Algal Bloom = Yes Rocky-2 Total Biovolume = 1,250 mm3/m3 Total Density = 5,590 units/ml. Chlorophyll-a = 44 ug/1 Algal Bloom = Yes 14 Robeson Creek, Chatham County Sampled by K. Lynch, C. Smith 900803 0630 Robeson Creek was sampled due to an obvious algal bloom signified by elevated surface pH (8.9) and dissolved oxygen concentrations (12.2 mg/1). The dark green color also indicated algal bloom conditions. The algal sample contained a bloom dominated by bacillariophytes, chlorophytes, cryptophytes and cyanophytes. The greenish colored water may have been caused by the high density of Oscillatoria geminata, a small filamentous blue-green alga. This species is widespread in eutrophic waterbodies across North Carolina. Similar algal blooms have been documented in past years (1986, 1987) in Robeson Creek. Total Biovolume 3,324 mm3/m3 Total Density 25,854 units/mi. Chlorophyll-a 23 ug/l Algal Bloom Yes New Hope Creek (02097314), Durham County Sampled by E. Williams 900814 1350 New Hope Creek was sampled during low flow conditions. An elevated pH (8.98) and discolored water indicated a possible algal bloom. Algal biovolume, density and chlorophyll-a were moderately low. Anabaena sl2iroides, a cyanophyte, comprised 79% of the .biovolume and may have been responsible for the greenish appearance of the water. Very high levels of nutrients were present in New Hope Creek, with total nitrogen reaching 10.1 mg/l and total phosphorus measuring 0.74 mg/I. With the high nutrient concentrations and moderate algal growth, evidentally some factor was limiting phytoplankton productivity. Total Biovolume = 3,211 mm3/m3 Total Density = 5,008 units/ml. Chlorophyll-a = 8 ug/l Algal Bloom = No 15 F. Moser Pond, Alarnance County Sampled by E. Galamb 900821 1120 Algal bloom samples were collected in response to a complaint investigation. A small pond had colorful Ted and white floating mats of algae. Cyanophytes, chlorophytes, and euglenophytes were found in the surface sample. The Ted and white floating mats were likely caused by the dominant alga, Anabaena portoricensis,, which like other cyanophytes produces such colors upon senescence. Lake Cedar Hollow, Guilford County Sampled by A. Hagstrom 900828 1100 Algal bloom samples were collected after a resident complained of discolored water in the lake. Wind had apparently blown and concentrated algae in the upper end of the lake where the sample was collected. The sample contained a massive bloom of Anabaena subcylindrica which was in the process of deteriorating, and therefore formed green and white surface scums. Anabaena subcylindrica, a filamentous cyanophyte is commonly found in eutrophic waters during the warmer months. Although nutrients were not collected, the lake's tributaries traverse horse and cattle farms, which input nutrients into the lake. B. Everett Jordan Reservoir (CPF081AIC), Chatham County Sampled by K. Trumbower 900913 1030 An algal sample was collected on the New Hope arm of Jordan Reservoir after green, turbid water was observed. The sample contained a bloom comprised of 71% cyanophytes. Anacystis cvanea, a colonial alga that forms surface blooms and Oscillatoria geminata, a small filamentous -alga, were the dominant cyanophytes. Other 16 dominant algal classes include euglenophytes, chlorophytes and bacillariophytes-. The high algal biovolu,me and density estimates were exemplified by the elevated corresponding chlorophyll-a concentration of 74 ug/l. Nutrient levels including ammonia/ammonium (0.17 mg/1) and total phosphorus (0.17 mg/1) were also elevated. Total Biovolume 102,611 mm3/m3 Total Density 499,604 units/ml. Chlorophyll-a 74 ug/l Algal Bloom Yes Atlantic Ocean, Brunswick County Sampled by unknown fisherman 900723 A fisherman collected a water sample after observing small filaments floating in discolored water. The sample was collected approximately fifty miles offshore from Bald Head Island. The algae was identified as Oscillatoria erythraea., a filamentous brackish water cyanophyte, commonly referred to as 'sea sawdust' because of its scalelike appearance. This alga annually forms vast areas of discolored water in the open sea during warm weather. Although no fish kill was observed in this instance, either toxic compounds released when these algal cells lyse or gill clogging caused by the high density of cells have been reported to cause fish kills. (Humm, 1980) 17 CATAWBA RIVER BASIN 18 Bragg Pond, Mecklenburg County Sampled by M. Durham, Mecklenburg County Environmental Protection Laboratory 900614 1457 Algal bloom samples were collected from Bragg Pond following a fish kill. The algal sample was dominated by chlorophytes (ClosteriopaLis longissima tropica) and euglenophytes, which may have been responsible for the observed reddish colored water. The algal sample was unpreserved and slightly deteriorated, therefore it was not counted. The corresponding chlorophyll-a value of 10 ug/l signified minimal algal growth. Low DO concentrations (4.8 mg/l on the surface to 3.3 mg/l at one meter depth) found during the fish kill may have contributed to the death of the fish. During sampling on June 14, water quality parameters were normal. Grants Pond, GastonCounty Sampled by T. McManus, K. Haynes 900621 1400 Grant's Pond was sampled on June 21 in response to a landowner's complaint of speckled pea-green water. This small pond also contained elevated surface pH and DO measurements which was likely a result of algal photosynthesis that is greatest around mid- day. Quantitative phytoplankton counts confirmed a minor algal bloom consisting of 76% euglenophytes by biovolume. Euglenophytes, predominately, Trachelomonas smiewiki. were probably responsible for the observed flecks and discoloration of the water. In addition, cryptophytes and chlorophytes were also dominant by density estimates. The pond's biovolume reflects borderline bloom conditions or the presence of a minor algal bloom. Total Biovolume = 5,037 mm3/m3 Total Density = 4,658 units/ml. Chlorophyll-a = 14 ug/l Algal Bloom = Yes 19 Wilson's Lake, McDowell County Sampled by J. Reid 900731 1430 On July 30, algal bloom samples were collected following a fish kill at Wilson's Lake. A high dissolved oxygen concentration (10.0 mg/1) was found on the lake's surface. A diversity of algal classes were dominant in the pond including bacillariophytes, chlorophytes, chrysophytes, cyanophytes, dinoflagellates and euglenophytes. The total algal biovolume of 813 MM3/m3 and density of 6,201 units/ml were not excessively high. Furthermore, the corresponding chlorophyll-a of 10 ug/l represented little algal growth. Phytoplankton apparently were not responsible for the fish kill. Total Biovolume. = 813 mm3/m3 Total Density = 6,201 units/ml. Chlorophyll-a = 10 Ug/l Algal Bloom = No Steele Creek, Mecklenburg County Sampled by M. Durham, Mecklenburg County Environmental Protection Laboratory 900801 1400 1 Steele Creek was sampled August I because of complaints of turbid, green water. Although fish did not appear stressed, surface DO was low at 3.5 mg/l. The phytoplankton biovolume of 3,712 mm3/m3 was slightly elevated with the stagnant conditions in Steele Creek. The phytoplankton sample was dominated by cyanophytes including Anabaena species and Aphanizgmenon flos-aquae, which probably tinted the water a greenish color. The accompanying chlorophyll-a value of 5 ug/I was low. Total Biovolume = 3,712 mm3/m3 Total Density = 1,572 units/ml. Chlorophyll-a = 5 ug/l Algal Bloom = No 20 South Fork Pond, Gaston County Sampled by T. McManus 900709 1100 South Fork Pond, created by the backwaters of the South Fork Catawba River, was sampled in response to a fish kill. The fish kill and apparent algal bloom were detected after warm, dry weather. As early as 11:00 a.m, a supersaturated D.O. concentration was observed. Although the surface D.O. was elevated, waters below the surface may have been depleted of oxygen as a result of evening respiration and decomposition of dead algae, which probably contributed to the fish kill. A large bloom comprised of 99% chlorophytes occurred in South Fork Pond. These backwaters which had been isolated from the river, created optimum conditions for phytoplankton growth. Phytoplankton numbers increased to astronomical proportions due to the lack of flushing. The sample's dominant species, Chlorogonium euchlorum, a chlorophyte, is commonly found in swamps, shallow ponds and aquariums. An exceedingly high chlorophyll-a value (1,900 ug/1) accompanied the sample. Even with the high amount of algal growth, nutrient levels were extremely elevated with total nitrogen values reaching 8.84 mg/I while total phosphorus measured 2.5 mg/l. Evidentally a nutrient source is fueling the algal growth, which is accelerated by the stagnant conditions in South Fork Pond. Total Biovolume = 194,116 mm3/m3 Total Density = 1,388,760 units/ml. Chlorophyll-a = 1,900 Ug/l Algal Bloom = Yes 21 Crowders Creek, York County, S.C. Sampled by K. Lynch, T. McManus 900905 1530 A reddish orange algal bloom was found in upper Crowders Creek during a special study of Lake Wylie. While euglenophytes caused the reddish surface film, pea-green water below the surface was probably due to the high density of Merismopedia tenuissima, a colonial cyanophyte. Elevated DO (12.3 mg/1) and pH (8.9) levels were also indicative of algal bloom conditions. This upper arm of Lake Wylie is shallow and receives high levels of nutrients which are recirculated and are therefore available for phytoplankton utilization. Total Biovolume = 12,551 mm3/m3 Total Density = 56,948 units/ml. Chlorophyll-a = 35 ug/l Algal Bloom = Yes Lake Norman, Catawba, Iredell Counties Sampled by A Parker 901003 1340 Sampled by K. Colson 901016 1530 Phytoplankton samples collected for identification from Lake Norman on October 3.,. confirmed the presence of a blue-green algal bloom. The light green suspended flecks observed throughout the water column were identified as Anacystis.cvanea, a colonial cyanophyte, which forms surface blooms. Extended warm weather combined with a low rate of flushing in the cove of the lake probably spurred the algal bloom. In October 1985, nutrients were recirculated during fall turnover causing blooms of A. cyanea in other coves in Lake Norman. High corresponding chlorophyll-a concentrations accompanied those samples. Lake Norman was again sampled on October 16 at a different location after reports of excessive algal growth. A diversity of algal classes were represented in the sample. Nutrient, chlorophyll, and phytoplankton numbers were all low, and were not indicative of algal bloom conditions. Total Biovolume = 695 mm3/m3 Total Density = 3,668 units/ml. Chlorophyll-a = 6 ug/l Algal Bloom = No 22 Commscope Lake, Catawba County Sampled by K. Haynes 901114 1420 Commscope Lake was sampled on November 14, because of the presence of large spherical flecks of algae throughout the water column. The sample contained Coelosphaerium naegelianum, a colonial cyanophyte which consists of large globular colonies of cells that can easily be seen with the unaided eye. C. naegelianum is an important component of water blooms, is widespread and often occurs in abundance in lake phytoplankton during the summer. This cyanophyte comprised 100% of the sample and contained an excessively large biovol 'ume and density. The corresponding chlorophyll-a concentration of 3,500 ug/l further confirmed the severity of the algal bloom. Very high levels of nutrients were present fueling the algal growth. Total nitrogen, total phosphorus and ammonia/ammonium measured 20.03, 1.5 and 0.29 mg/l, respectively. There are two facilities with permitted discharges into Commscope Lake. One facility discharges cooling water, while Commscope Inc. discharges wastewater. According to Commscope's self monitoring reports, this company has had numerous standards violations during the past year. Total Biovolume = 1,051,475 mm3/m3 Total Density = 38,829 units/ml. Chlorophyll-a = 3500 ug/1 Algal Bloom = Yes 23 CHOWAN RIVER BASIN 24 Chowan River (02053632, 02053652, Chowan-9), Bertie County Sampled by M. Yount, K. Cratch 900612 1040 Algal samples were collected after green flecks were observed in the water column. Samples collected from Colerain (02053632), Edenhouse (02053652) and from near channel marker #9 above Colerain contained very little algal growth along with low corresponding chlorophyll-a concentrations. Chowan-9 Total Biovolume = 305 mm3/m3 Total Density = 1,001 units/ml. Chlorophyll-a = 4 ug/l Algal Bloom = No 02053632 Total Biovolume = 279 mm3/m3 Total Density = 681 units/ml. Chlorophyll-a = 2 ug/l Algal Bloom = No 02053652 Total Biovolume = 666 mm3/m3 Total Density = 1,380 units/ml. Chlorophyll-a = 3 ug/l Algal Bloom = No Chowan River, Bertie, Chowan, Hertford Counties Sampled by K. Lynch, B. Robinson 900619 0950-1330 Water quality samples were collected from the Chowan River and its tributaries after large green flecks were reported in the river. The bloom was visible from the Edenhouse bridge to above Holiday Island. Field identification of the large flecks present near the" surface confirmed the presence of Anacystis cyanea, a colonial cyanophyte and Anabaena 12ortoricensis. a large filamentous cyanophyte, both of which are commonly found in Chowan River blooms. Quantitative algal counts confirmed high phytoplankton biovolume and density estimates from the Edenhouse bridge upstream to Arrowhead Beach. 25 Arrowhead-I Total Biovolume = 11,656 mm3/m3 Total Density = 13,695 units/ml. Chlorophyll-a = 15 ug/l Algal Bloom = Yes Catherine-I Total Biovolume = 5,330 mm3/m3 Total Density = 5,066 units/ml. Chlorophyll-a = 24 ug/l Algal Bloom = Yes Chowan-14 Total Biovolume = 3,034 MM3/m3 Total Density = 5,401 units/Mi. Chlorophyll-a = 12 ug/l Algal Bloom = No Indian-2 Total Biovolume = 3,390 mm3/m3 Total Density = 5,590 units/ml. Chlorophyll-a = I I ug/I Algal Bloom = No Rockyhock-I Total Biovolume = 6,857 mm3/m3 Total Density = 10,307 units/ml. Chlorophyll-a = 12 ug/l Algal Bloom = Yes 0205360615 Total Biovolume = 1,684 mm3/rn3 Total Density = 2,533 units/ml. Chlorophyll-a = 9 ug/l Algal Bloom = No 02053632 Total Biovolume = 3,475 mm3/m3 Total Density = 4,076 units/ml. Chlorophyll-a = 10 UgA Algal Bloom = No 0205363575 Total Biovolume = 14,765 mm3/m3 Total Density = 12,438 units/ml. Chlorophyll-a = 6 ug/I Algal Bloom = Yes 26 02053652 Total Biovolume = 11,552 mm3/m3 Total Density = 8,860 units/ml. Chlorophyll-a = 6 ug/I Algal Bloom = Yes Chowan River (02053652005), Chowan County Sampled by S. Mitchell 900711 Algal samples collected on July 11 confirmed the presence of an algal bloom dominated by the blue-green alga, Anabaena 12ortoricensis. Total Biovolume = 13,095 mm3/m3 Total Density = 3,419 units/ml. Chlorophyll-a = not sampled Algal Bloom = Yes Chowan River, Chowan County Sampled by M. Yount 900712 1120-1345 On July 12, algal bloom samples were collected from the mouth of Bennetts Creek downstream to ambient site 02053652, near Edenhouse. Algal samples were collected as "surface grab samples" (collected at 0.15 meters). A blue-green algal bloom occurred from Bennetts Creek to downstream near Colerain (02053632). Six of the surface grab samples contained algal blooms and all were comprised of over 93% cyanophytes by biovolume. The dominant species in every sample was the blue-green alga, Anabaena portoricensis, which is commonly found in eutrophic ponds, lakes, and slow flowing rivers throughout the state. The accompanying chlorophyll-a concentrations ranged from 17 to 350 ug/l. Catherine-7 Total Biovolume = 32,805 mm3/m3 Total Density = 8,122 units/ml. Chlorophyll-a = 3 5 0 ug/I Algal Bloom = Yes 27 Chowan-5 Total Biovolume = 69,869 mm3/m3 Total Density = 15,897 units/ml. Chlorophyll-a = 250 ug/l Algal Bloom = Yes Indian-8 Total Biovolume = 23,698 mm3/m3 Total Density = 6,551 units/ml. Chlorophyll-a = 200 ug/l Algal Bloom = Yes @02053632 Total Biovolume = 31,330 mm3/m3 Total Density = 8,036 units/ml. Chlorophyll-a = 120 ug/l Algal Bloom = Yes 02053652 Total Biovolume = 3,335 mm3/m3 Total Density = 1,910 units/ml. Chlorophyll-a = 17 ug/l Algal Bloom = No Bennetts Total Biovolume = 22,603 mm3/m3 Total Density = 6,521 units/ml. Chlorophyll-a = 270 u0l Algal Bloom = Yes Indian Creek, Chowan County Sampled by K. Miller 900726 1505 On July 26, Washington regional personnel surveyed the Chowan River after receiving reports of algal blooms. Because of northeast winds, much of the reported blooms had been dispersed. Surface grab samples collected from Indian Creek because of a visible surface bloom were comprised of cyanophytes (Anabaena 12ortoricensis) and cryptophytes (Cryptomonas erosa, Chroomonas minuta and C. caudata . An elevated chlorophyll-a of 35 ug/l accompanied the sample. Total Biovolume = 7,142 mm3/m3 Total Density = 3,474 units/ml. Chlorophyll-a = 35 ug/l Algal Bloom = Yes 28 Chowan River (02053632, 02053652, Chowan-Rock), Chowan, Bertie Counties Sampled by M. Yount, K. CTatch 900802 1110 The blue-green algal bloom persisted and was again sampled on August 2, during ambient monitoring. Three samples were collected, from Colerain (02053632), from near Rockyhock Landing (Chowan- Rock), and from the Edenhouse bridge (02053652). The three samples contained bloom levels of algae and were again dominated by greater than 87% cyanophytes (Anabaenaportoricensis). Cryptophytes (Cryl2tomonas erosa and Chroomonas minuta) were also codominant, by density. While the two ambient samples (02053632 and 02053652) were collected from the photic zone (approximately one meter) using a labline, Chowan-Rock was collected as a "surface grab sample" 'resulting in- higher phytoplankton numbers and chlorophyll-a values. Likewise, the corresponding chlorophyll-a sample for this station measured 100 ug/l. 02053632 Total Biovolume = 5,179 mm3/m3 Total Density = 2,180 units/ml. Chlorophyll-a = 14 ug/l Algal Bloom = Yes 02053652 Total Biovolume = 6,245 mm3/m3 Total Density = 2,725 units/ml. Chlorophyll-a = 16 ug/l Algal Bloom = Yes Chowan-Rock Total Biovolume = 10,923 mm3/m3 Total Density = 2,306 units/ml. Chlorophyll-a = 100 Ug/l Algal Bloom = Yes 29 Chowan River (Chowan-3), Bertie County Sampled by M. Yount, K. Cratch 900912 1030 On September 12, algal samples were collected from the western shore of the Chowan River, near Mount Gould Landing when bright green flecks appeared in the water. Again, the blue-green algae, Anabaena portoricensis and Anacystis c-v-anea dominated along with the chloromonadophyte, Vacuo aria virescens. An accompanying chlorophyll-a concentration of 370 ug/l confirmed the algal bloom conditions. Chowan River (02053632, 0205360615, 02053574), Bertie County Sampled by M. Yount, K. Cratch 901016 1030-1125 On October 16, during ambient sampling, green flecks in the water column were found to be the blue-green algae, Anacystis cyanea and Anabaena subcylindrica. Although the algal growth was observed from above Holiday Island to downstream near Colerain, only the uppermost station, 02053574, contained bloom levels of algae dominated by cyanophytes and the chloromonadophytes, Gonystomum semen and Vacuolgria virescens. Chlorophyll-a concentrations were low, ranging from 4 to 6 ug/l. 02053574 Total Biovolume = 5,109 mm3/m3 Total Density = 699 units/ml. Chlorophyll-a = 6 ug/l Algal Bloom = Yes 0205360615 Total Biovolume = 1,388 mm3/m3 Total Density = 256 units/ml. Chlorophyll-a = 4 ug/l Algal Bloom = No 02053632 Total Biovolume = 3,652 mm3/m3 Total Density = 1,077 units/ml. Chlorophyll-a = 6 ug/l Algal Bloom = No 30 LITTLE TENNESSEE RIVER BASIN 31 Santeetlah Lake, Graham County Sampled by C. Smith 900620 1000 An algal bloom sample was taken in response to complaints of pea-green water at. the Little Buffalo Creek arm of Santeetlah Lake. Elevated algal populations along with a moderately high chlorophyll- a concentration confirmed algal bloom conditions. Cyanophytes dominated the algal sample with Anabaena portoricensis, a large filamentous alga, and Anacystis cyanea, a colonial alga, dominating the biovolume and density estimates. Both algal species commonly form blooms in warm, nutrient enriched waters. Several trout farms located on Little Buffalo Creek may be contributing nutrients to which the phytoplankton were responding. Total Biovolume = 10,780 mm3/m3 Total Density. = 2,482 units/ml. Chlorophyll-a = 27 ug/l Algal Bloom = Yes 32 LUMBER RIVER BASIN 33 Echo Lake, Moore County Sampled by R. McLamb 900227 1100 Phytoplankton, chlorophyll-a and nutrient data were collected from four sites on Echo Lake after the lake manager expressed concern about greenish colored water. Echo Lake is one of 'Seven Lakes', a recreational and residential complex. The phytoplankton sample from station #1 near the boat ramp was analyzed and contained typical seasonal phytoplankton assemblages. Very low numbers of algae were found in the sample along with low chlorophyll-a concentrations ranging from 1 to 2 ug/l at all stations, indicating very little algal growth. Nutrient concentrations were analyzed and were not found to be excessively high, although wintertime nutrient levels are generally higher, as phytoplankton populations are supressed and are not utilizing nutrients. Total nitrogen concentrations ranged from 0.45 to 0.92 mg/l while total phosphorus ranged from below the detection limit to 0.02 mg/l at the four sites. Total Biovolume = 70 mm3/m3 Total Density = 934 units/ml. Chlorophyll-a = I UgIl Algal Bloom = No 34 Lake Pinehurst, Moore County Sampled by M. Jaynes 900718 Water quality samples were collected from three stations on Lake Pinehurst during a complaint investigation because of suspected leaking septic tanks. A quantitative algal count was conducted on LP-I, the station located nearest to the dam. Typical lake phytoplankton assemblages were found in the sample including chlorophytes, dinoflagellates, chloromonadophytes, chrysophytes and cryptophytes. The sample's total biovolume and density estimates were low and were not representative of algal bloom conditions. Low nutrient levels and corresponding chlorophyll-a concentrations (2-4 ug/1) collected from the three stations reflected the oligotrophic condition of Lake Pinehurst. Total Biovolume = 710 mm3/m3 Total Density = 833 units/ml. Chlorophyll-a = 3 ug/l Algal Bloom = No 35 NEUSE RIVER BASIN 36 Garner Farm Pond, Wake County Sampled by K. Lynch 900228 1530 A small farm pond which drains a large portion of Garner's wastewater spray irrigation system was sampled to assess its trophic condition. The owner had expressed concern that excessive runoff during 1989 had adversely affected his pond. Physical measurements including conductivity, water temperature, dissolved oxygen and pH levels all fell within normal ranges. The sample was comprised of several classes of phytoplankton, predominately Euglenophyceae (61%), Chloromonadophyceae (20%), and Cryptophyceae (13%). Such high numbers of euglenoids (Eu glen oph yceae) often indicate organic enrichment. The pond was found to contain an elevated algal biovolume particularly for winter sampling. The accompanying chlorophyll-a concentration of 130 ug/l was elevated, reflecting excessive algal growth. Total Biovolurne = 8,306 mm3/m3 Total Density = 4,944 units/ml. Chlorophyll-a = 130 ug/l Algal Bloom = Yes Gobble Pond,Wake County Sampled by S. Mitchell 900315 0930 A small farm pond was sampled after the pond's owners expressed concern because of excess filamentous growth covering about one half of the pond. Filamentous green algae including Spirogyra species and MicroSj2OTa species were apparently responding to fertilizer that had washed down from an upstream pond. Both algal species are seasonal and inhabit quiet waters of ponds and lakes, often forming large mats. The chlorophyll-a concentration of 17 ug/l was moderate. 37 Lake Wendell (WNDL-D2), Johnston County Sampled by G. Price 900705 1010 Lake Wendell was sampled because of greenish colored water and the presence of algal mats. Elevated dissolved oxygen (15.9 mgA) and pH levels measured on the water's surface at 10:10 in the morning also signified algal bloom conditions. A massive bloom of cyanophytes which comprised over 96% of the sample's biovolume and density was found. Anabaena spiroides contracta was the dominant cyanophyte present while other buoyant blue-greens such as Aphanizomenon flos-aauae and Anacystis cyanea were also included in the sample. These species are indicative of nutrient enrichment. Similar blue-green blooms have been documented in past summers (1989 and 1987) with high accompanying chlorophyll levels ranging from 130 to 230 ug/l. Excessive nutrients were present with total nitrogen and total phosphorus concentrations reaching 5.1 and 0.39 mg/l, respectively. Until nutrient inputs from the upstream discharger are controlled, algal blooms will continue to plague Lake Wendell. The town of Wendell is studying alternative sites for their wastewater treatment plant discharge which currently discharges into Buffalo Creek, upstream of Lake Wendell. Total Biovolume = 58,404 mm3/m3 Total Density = 13,014 units/ml. Chlorophyll-a = 270 ug/l Algal Bloom = Yes Vet School Pond,Wake County Sampled by S. Mitchell, R. Ferrell, J. Overton 900812 1100 Algal samples were collected following a fish kill at the NCSU vet school involving sunfish, bass and carp. Phytoplankton analyses and high accompanying chlorophyll-a levels confirmed a blue-green surface bloom of Anacystis ayanea (station VS-1) with euglenophytes (Trachelomonas spp.), g re n and blue-greens found at 0.15 meters. Nearly anoxic conditions present below the surface by 11:00 a.m. 38 suggested that oxygen was even further depleted in the evening hours during phytoplankton respiration. These low dissolved oxygen levels could have contributed to the fish kill. VS-1 Total Biovolume = 96,001 mm3/m3 Total Density = 61,722 units/ml. Chlorophyll-a = 4,800 ug/l Algal Bloom = Yes VS-2 Total Biovolume = 38,055 mm3/m3 Total Density = 24,339 units/ml. Chlorophyll-a = 140 ug/l Algal Bloom = Yes VS-3 Total Biovolume = 15,001 mm3/m3 Total Density = 18,459 units/ml. Chlorophyll-a = 88 ug/l Algal Bloom = Yes Eno River,,Durham County Sampled by E. Williams 900821 1100 Two algal bloom samples were collected from the Eno River after visible surface scums were observed. Flourescent green flecks were present near the confluence of the Eno and the Flat Rivers (station Eno-1) while the Eno River near the headwaters of Falls Lake (Eno-2) contained reddish surface flecks. Both samples exhibited algal bloom conditions consisting of greater than 80% euglenophytes by biovolume. Euglenophytes commonly cause surface scums of varying colors as observed here. Large numbers of this type of algae often signify organic enrichment. Corresponding chlorophyll-a concentrations at both sampling locations were high, indicating excessive algal growth. Nutrient levels were somewhat elevated, even with the high algal growth. ENO-I Total Biovolume = 30,120 mm3/m3 Total Density = 6,580 units/ml. Chlorophyll-a = 250 ug/I Algal Bloom = Yes 39 ENO-2 Total Biovolume = 30,325 mm3/m3 Total Density = 6,359 units/ml. Chlorophyll-a = 83 ug/1 Algal Bloom = Yes Falls Reservoir (NIEU010), Granville County Sampled by K. Trumbower 900912 1240 Red and greenish colored water was observed at upper Falls Reservoir near ambient station NEU010. The sample contained a bloom of predominately euglenophytes and cyanophytes while chlorophytes and cryptophytes were also abundant. The euglenophytes, Euglena species C and Trachelomonas spp, were probably responsible for the discolored water. The dominant cyanophyte, Merismopedia tenuissima, forms plate-like colonies and has also been associated with greenish waters. Although nutrient levels were not excessively high, the corresponding chlorophyll-a concentration of 33 ug/1 was elevated, supporting algal bloom conditions at upper Falls Reservoir. Total Biovolume = 5,271 mm3/m3 Total Density = 12,578 units/ml. Chlorophyll-a = 33 ug/l Algal Bloom = Yes Hart Pond, Granville County Sampled by R. Hiers 900926 1030 Hart Pond was sampled several weeks after a large bloom was reported. Several thousand caged catfish died while other free swimming fish survived. The phytoplankton sample from Hart Pond contained a large filamentous cyanophyte, Anabaena portoricensis, which had previously covered the pond's surface. It is likely that anoxic conditions caused by deteriorating algal mats and evening algal respiration contributed to the suffocation of the catfish. 40 Bay River Area, Pamlico County Sampled by K. Miller, C. Wilson 900315 1200-1615 Algal bloom samples were collected from five stations on tributaries to the Bay River because of elevated surface DO .(up to 17.7 mg/1) and pH levels. Suspended particles were also apparent in the water column. All stations except Vandemere-8 contained algal bloom levels of a common winter dinoflagellate, Prorocentru minimum. This algae was most likely responsible for the observed suspended flecks as well as the elevated chlorophyll-a levels. Alligator-5 Total Biovolume = 35,788 mm3/m3 Total Density_ = 33,191 units/ml. Chlorophyll-a = 140 ug/l Algal Bloom = Yes Chappel-7 Total Biovolume = 12,178 mm3/m3 Total Density = 13,364 units/ml. Chlorophyll-a = 71 ug/l Algal Bloom = Yes Racoon-2 Total Biovolume = 7,414 mM3/M3 Total Density = 11,005 units/ml. Chlorophyll-a = 56 ug/l Algal Bloom = Yes Trent- I Total Biovolume = 25,910 mm3/m3 Total Density = 24,980 units/ml. Chlorophyll-a = 110 Ug/I Algal Bloom = Yes Vandemere-8 Total Biovolume = 1,414 mm3/m3 Total Density = 1,834 units/ml. Chlorophyll-a = 7 ug/l Algal Bloom = No 41 Neuse River (NEU139), Pamlico County Sampled by A Yount 900319 1305 Elevations in surface pH (8.8) and DO (12.0 mg/1) concentrations led to the sampling of this algal bloom. The algal sample was dominated by cool weather dinoflagellates (Prorocentrum minimum, and Heterocal2sa triguetra) and bacillariophytes (Skeletonema potamos and Cyclotella species 3). The elevated biovolume, density and chlorophyll-a concentration confirmed algal bloom conditions. Total Biovolume = 4,954 mm3/m3 Total Density = 19,128 units/ml. Chlorophyll-a = 140 ug/l Algal Bloom = Yes Neuse River (NEU131X, NEU139), Pamlico County Sampled by M. Yount, K. Cratch 900524 1240-1305 Algal bloom samples were collected during ambient monitoring because of high pH (8.7) and DO concentrations (9.6-10 mg/1). Both samples were dominated by dinoflagellates and cryptophytes, while NEU139 also contained an abundance of bacillariophytes. The upper station, NEU131X, exhibited a higher algal biovolume estimate and chlorophyll-a concentration. NEU131X Total Biovolume = 4,710 mm3/m3 Total Density = 11,049 units/ml. Chl6rophyll-a = 120 ugA Algal Bloom = Yes NEU139 Total Biovolume = 1,044 mm3/m3 Total Density = 11,398 units/ml. Chlorophyll-a = 25 ug/I Algal Bloom = Yes 42 Neuse River (NEU131F, 02092586), Craven County Sampled by M. Yount, K. Cratch 900627 Two algal samples collected because of high pH (8-8.3) and DO concentrations (9-9.8 mg/1) were found to be algal blooms. The uppermost station, NEU131F, contained a high density of a common bacillariophyte, Cyclotella species 3. At station 02092586, an xanthophyte, Olisthodiscus carterae, dominated biovolume and density estimates by greater than 70%. NEU131F Total Biovolume = 1,066 mm3/m3 Total Density = 10,365 units/ml. Chlorophyll-a = 16 ug/I Algal Bloom = Yes 02092586 Total Biovolume = 13,190 mm3/m3 Total Density = 27,077 units/ml. Chlorophyll-a = 27 'ug/I Algal Bloom = Yes Oriental's WWTP Lagoon, Pamlico County Sampled by D. Denton 900718 1240 The town of Oriental's wastewater treatment plant lagoon was sampled because of greenish colored water. Treatment plant personnel had expressed concern because the treatment plant has had problems in the past with non-compliance. The algal sample was dominated by chlorophytes and cyanophytes. The dominant species, Chlorella species 2, a chlorophyte, and Anabaenopsis raciborskii, a cyanophyte, are typical of enriched waters and would be expected in a wastewater treatment lagoon. Moreover, the elevated biovolume, density and chlorophyll-a concentration are indicative of high algal growth. Total Biovolume = 13,773 mm3/m3 Total Density = 19,041 units/ml. Chlorophyll-a = 90 Ug/I Algal Bloom = Yes 43 Neuse River (NEU131X, NEU139, NEU131F), Pamlico, Craven Counties Sampled by M. Yount, K. Cratch 900724 1310, 900725 1015 Algal bloom samples were collected during ambient monitoring because of high pH (8.3-8.7) and DO concentrations (8.7-9.5 mg/1). The three stations were dominated by dinoflagellates, cryptophytes, and a small blue green alga, Phormidium angustissima which is commonly found in North Carolina estuaries. Stations NEU139 and NEU131F also contained an abundance of bacillariophytes (Cyclotella species 3). Although station NEU131F did not reflect high levels of algal populations, the chlorophyll-a concentration of 34 ug/l was elevated so that it was considered to be an algal bloom. NEU131X Total Biovolume = 2,957 mm3/m3 Total Density = 18,779 units/ml. Chlorophyll-a = 23 ug/I Algal Bloom = Yes NEU139 Total Biovolume = 8,868 mm3/m3 Total Density = 12,578 units/ml. Chlorophyll-a = 21 ug/I Algal Bloom = Yes NEU131F Total Biovolume = 2,438 mm3/m3 Total Density = 3,756 units/ml. Chlorophyll-a = 34 ug/I Algal Bloom = Yes Neuse River near Flanner Beach (Neuse-12), Craven County Sampled by L. Biles, K. Cratch 900817 Algal samples were collected following a fish kill which occurred the previous day. During sampling, a salt wedge was evident with higher salinity measurements and nearly anoxic DO concentrations on the river bottom. Moderate numbers of typical brackish water phytoplankton were found. 44 Total Biovolume = 1,046 MM3/m3 Total Density = 3,052 units/ml. Chlorophyll-a = 13 ug/l Algal Bloom = No Neuse River at Green Springs, Craven County Sampled by M. Yount, K. Cratch 900827 1140 Algal samples were collected from the Neuse River downstream of the Trent River after 'complaints of raw sewage in the river. The complainant runs Green Springs, a children's summer camp, and expressed concern since the children usually swim in the river. Three algal samples were collected from around the swimming area. Elevated algal densities ranging from 13,975 to 36,102 units/ml were found while algal biovolumes ranged from 2,223 to 11,984 mm3/m3. Olisthodiscus carterae, an xanthophyte, and Chroomonas minuta, a cryptophyte, were dominant throughout the three samples. Even with the elevated algal growth, high levels of total phosphorus were found ranging from 0.20 to 0.32 mg/l. Chlorophyll-a concentrations were somewhat elevated. Previous sampling for fecal coliforms revealed fecal counts as high as 84,000/100 ml upstream in the Trent River. Although an exact source of pollution has not been determined, leaking septic tanks, waste water treatment plants, or runoff from the James City or New Bern area are possible culprits. GREEN SPRINGS-A Total Biovolume = 2,223 mm3/m3 Total Density = 13,975 units/ml. Chlorophyll-a = 29 ug/I Algal Bloom = Yes GREEN SPRINGS-B Total Biovolume = 11,278 mm3/m3 Total Density = 36,102 units/ml. Chlorophyll-'a = 26 ug/l Algal Bloom = Yes GREEN SPRINGS-C Total Biovolume = 11,984 mm3/m3 Total Density = 35,170 units/ml. Chlorophyll-a = 5 1 Ug/l Algal Bloom = Yes 45 Neuse River near New Bern, Craven County Sampled by M. Yount, B. Adams 900916 1630-1845 Algal samples were collected from the Neuse River near the mouth of the Trent River in response to a menhaden fish kill. High pH and DO concentrations were found at all the stations. Bacillariophytes, cryptophytes, and small cyanophytes were dominant at most stations, with the bacillariophytes, Cyclotella spp. contributing to the algal high densities. NEUSE-2 Total Biovolume = 5,409 mm3/m3 Total Density = 66,381 units/ml. Chlorophyll-a = 25 ugA Algal Bloom = Yes NEUSE-4 Total Biovolume = 4,960 mm3/m3 Total Density = 90,488 units/ml. Chlorophyll-a = 25 ug/I Algal Bloom = Yes NEUSE-7 Total Biovolume = 10,416 mm3/m3 Total Density = 84,898 units/ml. Chlorophyll-a = 22 ug/l Algal Bloom = Yes 46 Neuse River (02092162, NEU131F, NEU131X), Craven County Sampled by M. Yount, K. CTatch 900925, 900926 1000-1310 Algal bloom samples were collected during ambient monitoring because of high pH (8.3-8.7) and DO concentrations (10.0-10.5 mg/1). The three stations were dominated in density by the bacillariophytes, Cyclotella spp. Other dominant -algae included typical brackish water phytoplankton such as dinoflagellates and small cyanophytes. While elevated algal densities occurred at all stations, highest chlorophyll-a levels were found at the two most upstream stations, 02092162 and NEU131F. 02092162 Total Biovolume = 2,485 mm3/m3 Total Density = 45,419 units/mi. Chlorophyll-,a = 39 ug/l Algal Bloom = Yes NEU131F Total Biovolume = 19,670 mm3/m3 Total Density = 129,967 units/ml. Chlorophyll-a = 53 ug/l Algal Bloom = Yes NEU131X Total Biovolume = 5,474 mm3/m3 Total Density = 172,591 units/ml. Chlorophyll-a = 16 ug/l Algal Bloom = Yes 47 Mill Creek on the Neuse River, Pamlico County Sampled by L. Biles 901204 1400 Algal bloom samples were collected from Mill Creek on the northern shore of the Neuse River because of reddish colored water, The sample contained a bloom dominated in biovolume by Prorocentrum minimum., a common dinoflagellate which proliferates during cool weather and causes reddish colored water. By density estimates, a ubiquitous cryptophyte, Chroomonas minuta also dominated both samples.. The sample collected from the Camp Seafarers Marina (Mill Cr Mar) contained excessive phytoplankton populations while the Mill Creek sample contained a minor bloom. Even with the excessive algal growth, elevated levels of total nitrogen (1.3 mg/1) and total phosphorus (0.21 mg/1) were found at the marina. The chlorophyll-a concentration from the marina was elevated at 140 ug/l while chlorophyll-a measured in the creek was moderate at 17 ug/l. Mill Cr-B Total Biovolurne = 7,776 mm3/m3 Total Density = 9,549 units/ml. Chlorophyll-a = 17 ug/l Algal Blooni = Yes Mill Cr Mar Total Biovolume = 88,369 mm3/m3 Total Density = 79,133 units/ml. Chlorophyll-a = 140 ug/l Algal Bloorn = Yes 48 PASQUOTANK RIVER BASIN 49 Albemarle Sound, Washington County Sampled by M. Yount 900417 1220-1300 Filamentous algae were collected from fishermens nets in the Albemarle Sound for identification. The filaments were comprised of the green algae, Cladophora crystalling, Spirogyra species, Ulothrix species, and the filamentous bacillariophytes, Melosira varians and Fragillaria species. All species found are widely distributed and were likely responding to warmer weather and nutrient concentrations which had built up over the winter. Albemarle Sound, Washington County Sampled by L. Henry 900706 Tufts of algae were collected from the southern shore of the Albemarle Sound near Mackeys. The filaments were identified as Tolyl2othrix species, a fresh water cyanophyte. Tolypothrix usually grows in small clumps and can be free floating or attached to submerged wood or rocks. 50 Kendricks Creek (02081185), Washington County Sampled by K. Cratch 900712 0835 Algal bloom samples were collected from Kendricks Creek on July 12, after green flecks were observed in the water column. A bloom of Gonystomum semen, a large unicellular flagellate, belonging to the class, Chloromonadophyceae, was found. This obscure class of algae retains characteristics of both dinoflagellates and euglenophytes. This species commonly occurs in the Pasquotank River basin, although usually not in such high numbers. Gonystomurn is commonly found in bogs and ponds. An elevated biovolume of 30,400 mm3/m3 and density of 2,032 units/ml was found. The high biovolume to low density ratio is attributable to the large size of the dominant species which comprised 97% of the biovolume. Nutrient analyses revealed moderate levels of total nitrogen (0.62 mg/1) and elevated levels of total phosphorus (0.15 mg/1). Although a chlorophyll-a sample was not collected, it is likely that the corresponding chlorophyll would have been high as chloromonadophytes have been associated with high levels of chlorophyll-a in the past. Total Biovolume = 30,400 mm3/m3 Total Density = 2,030 units/ml. Chlorophyll-a = not sampled Algal Bloom = Yes Alligator River (0208117810), Tyrell County Sampled by M. Yount, K. Cratch 900820 1130 An elevated surface dissolved oxygen reading led to the sampling of this algal bloom. A high density of Olisthodiscus carterae a brackish water xanthophyte was found in the sample. Total Biovolume = 4,456 mm3/m3 Total Density = 14,761 units/ml. Chlorophyll-a = 14 ug/l Algal Blooni = Yes 51 ROANOKE RIVER BASIN 52 Roanoke River, Washington County Sampled by M. Yount 900314 1010 Reports of filamentous algae adhering to fisherman's nets were received from the lower Roanoke River. Although filamentous samples were not collected directly from the nets, quantitative samples were examined for filamentous growths. Samples collected from Roanoke River ambient stations, 02081135, 0208114330, and 02081141 on March 14, contained very little algae, however some filaments of Melosira italka tenuissima, a chain forming bacillariophyte, were found which may have been the stringy material that was described growing on fishermens nets. Epiphytic growths of algae have been reported in other bodies of water bodies in North Carolina during early spring in past years. This same species of Melosira was found at the Roanoke River at San Souci (02081141) in late March, 1985. In addition, filamentous samples colleected from gill nets on the lower Cape Fear River in March 1986 contained filamentous growths of Melosira species. It is likely that a combination of increased water temperatures and normal seasonal elevated nutrient concentrations spurred the filamentous algal growth. Bacillariophytes such as Melosira are most commonly found during cool seasons such as fall and early spring. 53 TAR-PAMLICO RIVER BASIN 54 Greenville Utilities Impoundment, Pitt County Sampled by J. Chadwick 900719, 901008 Algal samples were collected from Greenville Utilities Presettlement Impoundments for identification. Floating clumps of the filamentous cyanophyte, Lyngbya nana were the most prevalent species encountered. This species is usually found on submerged rocks and probably floated into the impoundment. 55 Chocowinity Bay, Beaufort County Sampled by M. Yount 900305 1030 A fresh water bloom of Skeletonema potamos, a chain-forming bacillariophyte, occurred in Chocowinity Bay. Several species of cryptophytes were also prevalent in the sample. The algal sample was collected during routine monitoring when elevated surface pH (8.7) and DO concentrations (13.0 mg/1) were detected. The elevated corresponding chlorophyll-a concentration of 52 ug/l confirmed bloom conditions. Total Biovolume = 17,393 mm3/m3 Total Density = 26,028 units/ml. Chlorophyll-a = 52 ug/l Algal Bloom = Yes Bath Creek and vicinity, Beaufort County Sampled by J. Camp 900525 1127 Algal bloom samples were collected after reports of green flecks in Bath and Back Creeks. The algal bloom comprised of bacillariophytes (Cyclotella species 2), cryptophytes and xanthophytes was most concentrated in Back Creek, a tributary to Bath Creek. Back Cr-92 Total Biovolume = 6,085 mm3/m3 Total Density = 30,046 units/ml. Chlorophyll-a = not sampled Algal Bloom = Yes MBC (mouth of Bath Creek) Total Biovolume = 2,000 mm3/m3 Total Density = 33,190 units/mI. Chlorophyll-a = not sampled Algal Bloom = Yes MBB (Bath Cr between Back Cr and Pamlico R.) Total Biovolume 641 mm3/m3 Total Density 10,132 units/ml. Chlorophyll-a not sampled Algal Bloom Yes 56 Pam-Bath Cr Total Biovolume = 1,897 mm3/m3 Total Density = 28,474 units/ml. Chlorophyll-a = not sampled Algal Bloom = Yes Pamlico River (02084534, -TAR057G, TAR057GO85, Choco-1), Beaufort County Sampled by A Yount, K. Cratch 900604 1035-1240 Elevated surface pH (8.7-8.9) and DO (9.4-10 mg/1) measurements led to the collection of algal bloom samples from Bath Creek (02084534), Chocowinity Bay (Choco-1) and from a transect across the Pamlico River. The four samples contained elevated algal densities attributed to high numbers of small bacillariophytes, Cyclotella spp. The samples were also dominated by chlorophytes, dinoflagellates and cryptophytes, while Bath Creek contained a high density of Olisthodiscus carterae, an xanthophyte, which likely contributed to its elevated chlorophyll-a concentration of 34 ug/l. TAR057G Total Biovolume = 9,955 mm3/m3 Total Density = 46,641 units/ml. Chlorophyll-a = 23 ug/I Algal Bloom = Yes TAR057GO85 Total Biovolume = 713 mm3/m3 Total Density = 26,727 units/ml. Chlorophyll-a = 15 ug/I Algal Bloom = Yes 02084534 Total Biovolume = 13,577 mm3/m3 Total Density = 88,217 units/ml. Chlorophyll-a = 34 ug/I Algal Bloom = Yes Choco-I Total Biovolume = 2,996 mm3/m3 Total Density = 70,224 units/ml. Chlorophyll-a = 31 ug/I Algal Bloom = Yes 57 Far Creek Canal near Englehard, Hyde County Sampled by M. Vincent 900612 1530 An algal sample was collected following a crab kill which had occurred several days prior to sampling. A bloom of bacillariophytes (Cyclotella spp.) was present along with elevated surface pH and dissolved oxygen concentrations. Total Biovolume = 5,780 mm3/m3 Total Density = 97,126 units/ml. Chlorophyll-a = 25 ug/l Algal Bloom = Yes Pamlico River (TAR057G), Beaufort County Sampled by K. Miller, J. Camp 900718 1205 A bloom sample was collected across from Bath Creek in the Pamlico River. A high DO concentration of 9.6 mg/l was noted at one meter depth indicating that the most algal activity was occurring just below the surface, possibly because of light inhibition at the water's surface. An algal bloom consisting of large dinoflagellates (Gyrodinium uncatenuml Gyrodinium aureolum), and small cyanophytes (Phormidium angustissima) occurred in the Pamlico River. The high chlorophyll-a concentration of 62 ug/l confirmed algal bloom conditions. While total nitrogen levels were moderate at 0.51 mg/l, total phosphorous was elevated at 0.65 mg/l. Total Biovolume = 6,602 mm3/m3 Total Density = 7,017 units/ml. Chlorophyll-a = 62 ug/l Algal Bloom = Yes 58 Pamlico River at Washington Waterfront, Beaufort County Sampled by D. Denton 900718 1615 An algal sample was collected from the Pamlico River on the waterfront in Washington in response to a citizen's complaint. Greenish colored water was observed along with elevated surface DO (12.0 mg/1) and pH (8.4) levels. The sample contained a blue-green bloom of Merismopedia tenuissirna, a colonial plate-forming algae that often tints the water a greenish color. The plates of cells were in the process of disintegrating, and therefore were not quantitatively countable. M. tenuissima is commonly found in the plankton of fresh and brackish water. The excessive chlorophyll-a concentration of 50 ug/l confirmed algal bloom conditions on the Washington waterfront. Pamlico River, Beaufort County Sampled by K. Miller, L. Tison 900724 1125-1540 On July 24, five algal bloom samples were collected from Ragged Point to downstream at Bayview, in response to a fish kill. Dead menhaden, flounder, hog chokers, and spot were observed and were most concentrated around Hawkins Landing on the northern shore of the river. Supersaturated surface DO measurements were found at most of the five sampling sites. Salinity and DO data illustrated the presence of a salt wedge at stations 4B and 7D with nearly anoxic conditions and higher salinity concentrations on the river bottom. All five samples contained elevated phytoplankton growth and were considered to be algal blooms with the highest concentrations at Bayview (10E) and Hawkins Landing (2A). Dinoflagellates such as Peridinium trochoideum, Gymnod@inium aurantium, Gyrodinium uncatenum and small filamentous cyanophytes, Phormidiurn angustissima dominated the samples. Elevations in chlorophyll-a and total phosphorus concentrations were found in all samples. 59 Pam-2A Total Biovolume = 21,354 mm3/m3 Total Density = 29,347 units/ml. Chlorophyll-a = 20 ug/l Algal Bloom = Yes Pam-4B Total Biovolume = 3,739 MM3/m3 Total Density = 11,412 units/ml. Chlorophyll-a = 27 ug/I Algal Bloom = Yes Pam-5C Total Biovolume = 13,414 MM3/m3 Total Density = 21,225 units/ml. Chlorophyll-a = 20 ug/I Algal Bloom = Yes Pam-713 Total Biovolume = 3,414 mm3/m3 Total Density = 24,980 units/ml. Chlorophyll-a = 23 ug/l Algal Bloom = Yes Pam-IOE Total Biovolume = 36,260 mm3/m3 Total Density = 25,675 units/ml. Chlorophyll-a = 85 ug/l Algal Bloom = Yes Pamlico River near River Acres, Beaufort County Sampled by L. Tison 900726 Reddish colored filamentous algae was collected for identification from the northern shore of the Pamlico River near River Acres. The algae was identified as Compsopo-gon coer leus, a red alga belonging to the class, Rhodophyta. This species is common to abundant in several creeks upstream of the Tar-Pamlico River estuary and is usually found during summer and fall. The branches of this alga vary in color from violet to blue and green. 60 Pamlico River, Beaufort County Sampled by K. Miller, J. Camp 900801 1345-1645 Algal bloom samples were collected from Pungo Creek on August 1, following fish and crab kills. Dead crabs were found in pots near station Pungo Cr-8. A salt wedge was apparent (usually at 2 meters depth) in Pungo Creek and on the Pungo River the day of sampling. The uppermost stations, (9 and 2) generally contained the highest concentration of algal growth and corresponding chlorophyll- a concentrations. Dinoflagellates, cryptophytes and cyanophytes dominated all samples. Dinoflagellates including Peridiniurn trochoideum, Gymnodinium. aurantium, Glenodiniurn danicans, Oxyrrhis marina and Gyrodiniurn aureolurn comprised the majority of the biovolume, while small cyanophytes (Phormidium. angustissima) and cryptophytes (Chroomonas minuta) were common dominants by density. Pungo Cr-2 Total Biovolume = 11,405 mm3/m3 Total Density = 14,616 units/ml. Chlorophyll-a = 62 ug/I Algal Bloom = Yes . Pungo Cr-5 Total Biovolume = 2,559 mm3/m3 Total Density = 12,985 units/ml. Chlorophyll-a = 28 ug/I Algal Bloom = Yes Pungo Cr-8 Total Biovolume = 2,634 mm3/m3 Total Density = 10,248 units/ml. Chlorophyll-a = 27 ug/I Algal Bloom = Yes Pungo Cr-9 Total Biovolume = 14,505 mm3/m3 Total Density = 12,461 units/ml. Chlorophyll-a = 51 ug/l Algal Bloom = Yes 61 Pamlico River at the mouth of Broad Creek (02084519505), Beaufort County Sampled by K. Miller, J. Camp 900802 1345-1645 An algal bloom sample was taken during an investigation of deteriorating algal mats near the mouth of Broad Creek. No mats were found during the investigation. Algal biovolume and chlorophyll-a were low, although the presence of small cyanophytes, Phormidium angustissima, bacillariophytes, Cyclotella spp. and chrysophytes contributed to an elevated algal density estimate. Total Biovolume = 1,394 mm3/m3 Total Density = 13,844 units/ml. Chlorophyll-a = 8 ug/l Algal Bloom = Yes Mouth of Broad Creek, Beaufort County Sampled by J. Camp, A. Hodge 900815 1100 Aquatic vegetation that had washed up in the mouth of Broad Creek was collected for identification. The sample was identified as Nitella species, a member of the division, Charophyta, more commonly known as stoneworts or brittleworts. Nitella is usually found in shallow water, protected from wave action and strong currents. Pamlico River, Beaufort County Sampled by J. Camp, M. Vincent 900827 1135-1230 Several algal bloom samples were collected from the Pamlico River after fishermen reported dead crabs in pots upstream from Core, Point, which is located near Durham Creek. Phytoplankton samples were collected from Surnmerhaven on the north shore (Summer-Al), Blounts Bay (Pamlico-5), and from the mouth of Bath Creek (Pamlico-6). 62 All three samples contained 'bloom' levels of phytoplankton growth with elevated algal densities. In addition, Pamlico-5 contained an elevated biovolume of 15,517 mm3/m3 due to the presence of a large dinoflagellate, Gymnodinium nelsonii. Other species dominating the Blounts Bay sample include Cyclotella spp, a bacillariophyte, and Phormidium angustissima, a small, filamentous cyanophyte. A high chlorophyll-a concentration of 60 ug/l accompanied this bloom sample. Downstream at the mouth of Bath Creek, dinoflagellates (Peridinium trochoideum, Gvmnodinium aurantiurn . cyanophytes (Phormidium angustissima) and cryptophytes (Chroomonas minuta) were most prevalent. The accompanying chlorophyll-a concentration of 32 ug/l was indicative of increased algal activity. At Summer-1, bacillariophytes (Cyclotella species 3), cryptophytes (Cryl2tomonas erosa reflexa and dinoflagellates (Gymnodinium species 3) dominated the sample. The dominant algal species from these three samples are all commonly found in the Pamlico River estuary. Water chemistry collected at the two lower sites revealed high concentrations of total phosphorus at Pamlico-5 (0.25 mg/1) and Pamlico-6 (0.37 mg/1). Total nitrogen concentrations were below 0.7 mg/l at both lower sites. Dissolved oxygen and salinity data indicated a salt wedge at the mouth of Bath Creek with a DO measurement of only 1.2 mg/l at one meter depth. A salt wedge which was probably more widespread previously, was most likely responsible for the crab deaths. Pamlico-5 Total Biovolume = 15,517 mm3/m3 Total Density = 47,515 units/mi. Chloropbyll-a = 60 ug/l Algal Bloom = Yes Pamlico-6 Total Biovolume = 4,393 mm3/m3 Total Density = 33,279 units/ml. Chlorophyll-a = 32 ug/1 Algal Bloom = Yes Summer-Al Total Biovolume = 4,766 mm3/m3 Total Density = 30,134 units/ml. Chlorophyll-a = not sampled Algal Bloom = Yes 63 Pungo Creek, Beaufort County Sampled by J. Camp, L. Biles 900829 1524 A fish kill involving flounder, spot, silver perch and crabs was observed in Pungo Creek on August 29. A salt wedge was again apparent as surface DO was 9.5 mg/l, while at one meter, DO measured 0.5 mg/l. The phytoplankton sample was dominated by typical estuarine species, consisting of cyanophytes (Phormidium angustissima), dinoflagellates (Peridinium trochoideum and bacillariophytes (Cyclotella species 3). Total algal density reached 38,780 units/ml primarily because of the high number of small cyanophytes. The accompanying chlorophyll-a concentration was indicative of an algal bloom. Total Biovolume = 2,375 mm3/m3 Total Density = 38,780 units/ml. Chlorophyll-a = 31 ug/l Algal Bloom = Yes Herring Run, Beaufort County Sampled by K. Miller 901219 1540 Algal samples were collected because of complaints of discolored water. A bloom of d inoflagel late s, euglenophytes and cryptophytes was found. The dominant dinoflagellate, Oxyhurris marina may have been responsible for the observed yellow flecks in the water column. Total Biovolume = 6,057 mm3/m3 Total Density = 2,853 units/ml. Chlorophyll-a = 21 ug/I Algal Bloom = Yes 64 WHITE OAK RIVER BASIN 65 Little Northeast Creek (0209317585), Onslow County Sampled by J. Gregson 901002 A phytoplankton sample was collected for analysis from an ambient station in Little Northeast Creek after a salinity level of 7 ppt. was discovered in this normally fresh water creek. The phytoplankton sample was comprised of chrysophytes and bacillariophytes. Dominant phytoplankton species include Ochromonas species, a chrysophyte, and Melosira varians, a large chain-forming bacillariophyte. Evidentally, these species tolerate low salinity waters. The sample's algal biovolume and density were below the algal bloom threshold although an elevated chlorophyll-a concentration of 44 ug/l accompanied the sample. Nutrient analyses also revealed elevated levels of ammonia/ammonium (0.16 mg/1) and total phosphorus (0.24 mg/1). 66 YADKIN-PEE DEE RIVER BASIN 67 Unnamed tributary to Dutchman Creek, Davie County Sampled by S. Knight 900201 1500 Algal samples were collected from a stagnant pond because of a greenish hue. Small phytoplankton populations consisting of bacillariophytes, chlorophytes, cryptophytes, euglenophy'tes and cyanophytes comprised the majority of the sample. Low numbers of phytoplankton and a moderately low chlorophyll-a concentration determined that this was not an algal bloom. Total Biovolume = 82 mm3/m3 Total Density = 442 units/ml. Chlorophyll-a = 16 ug/1 Algal Bloom = No Hanes Ponds, Davie County Sampled by S. Knight 900725 1130-1230 Water quality samples were collected from two ponds because of a citizen's complaint that nearby sludge application had increased nutrient loading to the ponds. The sludge was apparently applied using standard procedures. Surrounding land use is pastures, frequented by cows. The downstream pond, Hanes-1, contained a bloom of Ankistrodesmus falcatus mirabilis, a chlorophyte, which comprised 94% of the sample's density. Members of this genus are often found in abundance in still, quiescent waters. Elevated algal density and a corresponding chlorophyll-a value of 80 ug/l further confirmed algal bloom conditions. In addition, very high nutrient levels were found in Hanes-1. Total nitrogen, total phosphorus and ammonia/ammonium were 6.4, 3.1, and 0.14 mg/l, respectively. The upper pond, Hanes-2, contained many floating algal mats and a moderately low amount of phytoplankton growth. Similarly, a moderate chlorophyll-a concentration of 18 ug/l was found in Hanes -2. 68 Algal bloom conditions, the presence of numerous aquatic weeds and very high nutrient levels in Hanes Pond-I illustrate the eutrophic state of this pond. Lush aquatic growth and floating algal mats in Hanes-2 are also indicative of nutrient enrichment. Although little rainfall had occurred in the past few months, intermittent thunderstorms may have created nonpoint source runoff (either from -the livestock or from land application) which fueled the profuse growth in the ponds. Hanes- I Total Biovolume = 3,265 mm3/m3 Total Density = 20,962 units/ml. Chlorophyll-a = 90 Ug/l Algal Bloom = Yes Hanes-2 Total Biovolume = 2,684 mm3/m3 Total Density = 1,922 units/ml. Chlorophyll-a = 18 Ug/l Algal Bloom = No 69 SUMMARY During 1990, the Biological Assessment Group received algal bloom reports from a diversity of waterbodies. Algal blooms occurred in creeks, ponds, lakes, rivers, and estuaries. A large portion (50%) of bloom reports occurred within the Washington Region. This region also has the largest number of ambient stations. Furthermore, algal bloom coverage has increased on the Tar-Pamlico River and its tributaries because of the efforts of PERT (Pamlico Estuarine Response Team). Additional ambient sampling stations added within the Albemarle/Pamlico Estuarine Study area as part of the expanded ambient network have also increased coverage within this area. The sampling schedule for the Albemarle/Pamlico estuarine area will be reviewed and possibly revised after 1991. Dinoflagellate blooms were a common occurrence on the Neuse and Pamlico River estuaries as in past years. Dinoflagellates commonly found in brackish water blooms include Peridinium, Prorocentrum, Gymnodinium, and Gyrodinium spp. Small blue- greens such as Lyngbya and Phormidium spp. and diatoms including Cyclotella. and Skeletonerna often codominated. Algal blooms on the Neuse and Pamlico Rivers were often sampled as part of fish kill investigations, where hypoxia or low dissolved oxygen levels were a contributing factor to the fish kill. Low dissolved oxygen conditions often result when salinity stratified waters prevent vertical mixing of anoxic bottom waters. In the Pamlico River estuary, hypoxia was found to be short lived without serious consequences. (NCDEHNR, 1990) The Chowan River experienced a blue-green bloom beginning in June and extended intermittently through September. The dominant algal species Anabaena spp. and Anacystis cvanea formed visible surface scums. The bloom mainly extended from above Holiday Island to as far as Edenhouse. Many slow moving tributaries to the Chowan also had thick surface growths of algae. Other major blue- green blooms last occurred on the Chowan in 1989, 1997 and 1983. Eutrophic ponds and lakes in several river basins (Cape Fear, Catawba, Little Tennessee, Neuse, Tar-Pamlico, and Yadkin Pee-Dee) experienced blooms of cyanophytes, chIorophytes, or euglenophytes and exhibited elevated chlorophyll-a concentrations. Non-point source runoff was thought to have precipitated algal blooms in several of these ponds, lakes and creeks. Blue-green algae continue to dominate Abbotts Creek arm of High Rock Lake as in past years. Samples were not quantitatively analysed this year since this arm has been identified as hypereutrophic, with no change in its trophic status. Chlorophyll-a 70 concentrations, often used as a meausre of productivity, demonstrate continued high values at two stations on Abbotts Creek, Cottongrove, and Southmont. Chlorophyll-a values measured from July through September averaged 48 ug/l at the two stations indicating algal bloom conditions. Although not quantified, reports of filamentous algal growths were also documented in several river basins. In the Pasquotank and Roanoke River basins, filamentous chlorophytes and bacillariophytes prompted complaints from fishermen as excessive algal growths were adhering to fishing nets. Often filamentous algal growth is seasonal and occurs in responge to abundant nutrients. One potentially toxic bloom occurred in the Atlantic Ocean off the coast of Wilmington. Oscillatoria ervthraea, a filamentous cyanophyte was collected by a fisherman after he noticed red patches in the water. Toxins from this algae have been reported to kill marine mammals and fish although no deleterious effects were observed here. Numerous benefits have stemmed from Biological Assessment's Algal Bloom Reporting Program. Improvements in water quality have been reported from the 'phosphate detergent ban' which was initiated after blooms were documented statewide. This ban became effective January 1, 1988 and has been successful in reducing the quantity of phosphorus in N.C. surface waters (NCNRCD, 1989). Other benefits derived from documentation of eutrophic water bodies include the "Nutrient Sensitive Waters" (NSW) designation, limiting nutrient inputs from industries and waste water treatment plants. Within NSW watersheds, non-point source inputs are controlled by use of 'Best Management Practices' which are agricultural erosion control measures. The Chowan, Neuse, and Tar- Pamlico River Basins and the B. Everett Jordan watershed in the Cape Fear River Basin are all designated NSW. The New River watershed, near Jacksonville is protected under Administrative Code 15:2H 0404 statute, as a result of recurring blooms and a subsequent special study. This statute gives the division director the powers to limit dischargers within this nutrient enriched watershed. Several other special studies or projects were conducted as a result of recurring blooms. Special studies were initiated on High Rock Lake (Yadkin-Pee Dee River Basin) and Lake Wylie (Catawba River Basin) after recurring algal blooms. Increased sampling efforts including special studies and an expanded ambient network in the Neuse and Pamlico estuaries have resulted because of numerous blooms and signs of enrichment. In addition, blue-green blooms in 71 Santeetlah Lake (Little Tennessee River Basin) have led to special studies on trout farms and their subsequent impact on waterbodies. In conclusion, the algal bloom monitoring network established in 1984 has served as important* water quality documentation statewide. This system is useful for revising the ambient monitoring network, identifying sources of enrichment, identifying waterbodies or watersheds needing potential nutrient controls, and determining if algal blooms are actually responsible for the observed symptoms. 72 RB@AERENCES Humm, Harold J. and Suzanne R. Wicks. 1980. Introduction and Guide to the Marine Bluegreen Algae. John Wiley and Sons. New York. North Carolina Department of Environment, Health and Natural Resources. DEM, DMF. 1990. Pamlico Environmental Response Team Report. Washington, N. C. North Carolina Department of Natural Resources and Community Development. DEM. 1989 Water Quality Effects of the North Carolina Phosphorous Detergent Ban. Draft. Smith, G.M. 1950. The Freshwater Algae of the United States. 2nd Ed. McGraw Hill Book Co, Inc. New York. 73 APPENDIX 1. ALGAL BLOOM REPORT FORM This form should be completed and sent to the D.E.M. Central Laboratory in Raleigh marked ATTENTION: Karen Lynch. Please send also a chlorophyll sample, and one fresh and one preserved algal sample. Nutrient samples are also helpful. One algal sample should be preserved with Lugol's solution at the rate of 2-3 ml. per 500 ml of sample (sample should be straw colored). No special containers are required, however, 500 ml of sample is preferred. The phytoplankton and chlorophyll samples should be taken concurrently or from the same labline sample. Please call if there are questions (733-6946). Ask for Karen Lynch, Dianne Reid or Cherri Smith. Any one of these people can send you Lugol's solution and report forms if your region needs more. LAKE, RIVER or STREAM: COUNTY: TOPO MAP# RIVER BASIN: SAMPLER: DATE & TIME: DESCRIPTION OF BLOOM: Draw or include a map to indicate exact location, nearest ambient station if applicable, and extent of coverage. Also include visual observations ie. color, floating or in water column, filamentous or planktonic (can it be picked up by hand, little green balls, flecks, threadlike, etc.). Is the water clear, dark, turbid, containing much suspended matter, etc? Ho-w are the present and recent weather conditions; especially wind and rainfall. Are there dead or struggling fish associated with the bloom" Why was the sample taken? (ie. obvious bloom, fish kill, taste and odor problem, etc) PHYSICAL AND CULMICAL DATA D.C. pH Temp. Cond. (corr Salinity 10.?5 2C) - - - - - - - - - - - - - - - - -@'U 4(fE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - (.15 M.) (1.0 M.) (2.0 m.) (3.0 m.) (4.0 m.) (5.0 rn.) (6.0 rn.) Bottom Depth? (m.) Please continue on additional sheet if necessary. DO NUTRIENT SAMPLES ACCOMPANY THIS SAMPLE? YES NO CHLOROPHYLL SAMPLE(S) TAKEN? YES- NO OTHER CHEMICAL ANALYSIS 74 APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUW DENSITY BLOW FISH KILL? B EVERETT JORDAN CPF055C CHATHAM CAPE FEAR 840709 YES. 13LUE-GREENS B. EVERETT JORDAN CPF0884A CHATHAM CAPE FEAR 840709 YES, 13LUE-GREENS 8. EVERETT JORDAN CPF055C CHATHAM CAPE FEAR 850613 38 8491 18080 YES, 13LUE-GREENS B. EVERETT JORDAN CPF05SE CHATHAM CAPE FEAR 850613 33 1586 3649 YES, 13LUEGREENS B. EVERETT JORDAN CPF055C CHATHAM CAPEREAR 850621 76 6529 149066 YES. BLUF-GREENS B EVERETTJORDAN CPF055E CHATHAM CAPE FEAR 850621 86 1378 33889 YES, BLUE-GREENS NORTHEAST CAPE FEAR 9) MT CLIVE 02107586 WAYNE CAPE FEAR 850627 19482 76164 YES. CRYPTOPHYTES. DINOFLAGELLATES E.J. HORNE PRIVATE POND CUMBERLAND CAPE FEAR 850905 1091 12141 ND LAKE BELOW IPI GUILFORD CAPE FEAR 860120 7394 67167 YES@ PURE CHLAMYCOMONASCREENS GREAT COHARIE CREEK SAMPSON CAPE FEAR 860213 NO. POLLEN ETC. CAPE FEAR RIVER NRRIEIGELWOOD COLUMBUS CAPE FEAR 860305 NIA6 FILAMENTOUS MELOSIRA AND MMny FUNGUS STOCKINGHEAD CREEK 02107985 DUPLIN CAPE FEAR 860505 NA FILAMENTOUS SIPHONALES ROBESONCREEK 02097189 CHATHAM CAPE FEAR 860617 80 3331 13626 YES.CRYPTOPHYTES,BLU&GREENS CAPE FEAR RIVER @ LOCK AND DAMSI BLADEN CAPE FEAR 860729 17 1504 2504 NO, BUT LOW DO. ROSESLAKE CUMBERLAND CAPE FEAR 860807 ND ROBE9ONalEEK 02097189 CHATHAM CAPE FEAR 860827 65 25538 152676 YES,CRYPT0PHYTESBLUEGREENS Ul DOVEFIELD POND @)OAKLEY NEWHANOVER CAPE FEAR 861126 NO, BACTERIA HODGE FARM POND HODQEFP RANDOLPH CAPE FEAR 870521 1344 7468 NO, FISH KILL ROGE90NCREEK 02097189 CHATHAM CAPE FEAR 870603 4642 12883 YES@ GREENS ROBE9ONCREEK 02097189 04ATHAM CAPE FEAR 871015 41 5399 17003 YES ROSEBOROLN)OON ROMEICROO SAMPSON CAPE FEAR 880218 NS 35103 286050 YES, GREENS GREENFIELD LAKE GREENFIELD-I NEWHANOVER CAPE FEAR 880428 0 157 419 NO GREENFIELD LAKE GREEWIELD-2 NEWHANOVER CAPE FEAR 880428 4 1437 1269 NO GREENFIELD LAKE GREENFIELD-3 NEWHANOVER CAPE FEAR 880428 0 330 291 NO GREENFIELD LAKE GREENFIELD NEW HANOVER CAPE FEAR 880501 NS NIA FILAMENTOUS GREENS LAKE RIM LAKE RIM-1 CUMBERLAND CAPE FEAR 880525 NS 81136 16071 YES@ CHAYSOCROMULINA BREV -YES TALLY POND TALLY-A CUMBERLAND CAPE FEAR 880601 6 1484 3653 NO TALLY POND TALLY-13 CUM13ERLAND CAPE FEAR 880601 2 847 5808 N3 JORDAN LAKE CPF055C CHATHAM CAPE FEAR 880602 65 5357 48828 YES, 13LUE-GREENS MER TEN, PHOR ANG FEW (3) JUMP AND RUN BRANCH JR-I BRUNSWICK CAPE FEAR 880719 5 111 419 NO, FILAMENTOUS 13LUE-GREENS STEWART POND STEWART-1 RANDOLPH CAPE FEAR 880913 460 145866 153724 YES@ EUGLEl4OPI-IYTFSGREENS YES HOLT FARM POND HFP-1 RANDOLPH CAPE FEAR 890531 23 1090 757 ND LAKE LYNWOOD LYNWOOD-I GUILFORD CAPEFEAR 890606 230 13501 6987 YES. CYA STEWART POND STEWART-I RANDOLPH CAPE FEAR 900515 350 113537 73017 YES, TRAC VOL APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUME DENSITY BLOOM FISH KILL? HIGH POINT RESERVOIRS CITY LAKE-1 GUILFORD CAPE FEAR 900705 4464 17468 YES, CYA-ANABS RAC, ANAB LEV HIGH POINT RESERVOIRS HIGH PT LAG-i GUILFORD CAPE FEAR 900705 63388 32142 YES, CHL-STAU, SCEN QUA HIGH POINT RESERVOIRS OAK HOLLOW-1 GUILFORD CAPE FEAR 900705 25ill 55200 YES. CYA-ANABS RAC, ANAB LEV LATHAM LAKE MBN-02 ALAMANCE CAPE FEAR 900710 21 1134 2811 YES, FIL ALGAL MATS DEEP RIVER IMPOUNDMENT DEEP-COL RANDOLPH CAPE FEAR 900711 28 3503 8245 NO, BUT CHL-CARTERIA SP ATLANTIC OCEAN ATLANITC OCEAN BRUNSFWCK CAPEFEAR 900723 N/A FIL CYArOSCI ERYTHRAEA ROCKY RIVER ROCKY-2A WAKE CAPE FEAR 900726 44 1889 13451 YES. CHL, CRY, BAC STEWART POND STEWART-I RANDOLPH CAPE FEAR 900802 6400 350745 85597 YES, CYA-ANAB SPI, APHA FLO, ANAC CYA BACKGROUNDPOND BACKGRCUND-I RANDOLPH CAPE FEAR 900802 37 10567 25854 YES, CHL,EUGBAC,CYA ROCKY RIVER ROCKY-11 WAKE CAPE FEAR 900803 32 1662 6594 YES, CHL, CRY, CHR ROCKY RIVER ROCKY-2 WAKE CAPEFEAR 900803 44 1250 5590 YES,CHR,CYA STEWART POND STEWART-i RANDOLPH CAPE FEAR 900809 400 N/A YES. CYA-ANAB SPI.CHL, EUG ROSE90NCFM 02097189 CHATHAM CAPEFEAR 900813 23 3324 25854 YES. CYA, CHL, CRY. BAC NEW HOPE CREEK 02097314 DURHAM CAPE FEAR 900814 8 3211 5008 NO, BUT CYA LIT TO BIG ALAMANCE OR F L40SER POND ALAMANCE CAPE FEAR 900821 N/A YES, CYA-ANAB POPI,SPI, BACTERIA -i 0'1 LAKE CEDAR HOLLOW CEDAR HOLLOW GUILFORD CAPE FEAR 900828 YES, CYA-ANAB SUB, OSCI SP JORDAN RESERVOIR CPF0811AIC WAKE CAPEFEAR 900913 74 102611 499604 YES, CYA ANAC Cyk OSCI GEM, CHLEUG POPLIN POND POPLIN POND UNION CATAWBA 850619 8231 1922 YES, EUGLENOPHYTES PRICEPOND PRICE POND UNION CATAWBA 850619 40360 12752 YMEUGLENCIPHYTES UNION POND UNIONPIOND UNION CATAWBA 850619 2766 945 YES@ EUGLENCIPHYTES PRIVATE POND IREDELL CATAWBA 850621 ID, BLUE-GREENS, DIATOMS FREEDOM PARK LAKE MECKLENBURG CATAWBA 850822 37722 1003751 YESBLUE-GREENS YES LAKE NORMAN LNI CATAW13A CATAWBA 851015 2400 16381 11529 YES. BLUE-GREENS LAKE NORMAN U42 CATAW13A CATAWBA 851015 8700 59283 27950 YES. 13LUE43REENS LAKE NORMAN LN3 CATAWBA CATAWBA 851015 1300 45010 22709 YES. 13LUE-GREENS EASTFORK UNION CATAWBA 660414 21495 17935 YES, ENRICHED MATS OF ULOTHR N. SPIROGYRA WAVERLYLAKE #1 MECKLEWURG CATAWBA 860716 29 13782 21661 YES. 13LUE-GREENS WAVERLY LAKE 02 MECKLENBURG CATAW13A 860716 110 100813 50485 YES. ELUE-GREENS CHARLES FOWLER FARM POND UNION CATAWBA 860808 130 7026 15198 YES,ELrG.GREENS YES CATAWBA CREEK (WYLIE) 02145524 GASTON CATAWBA 860924 19 4326 20438 YES, BLUE-GREENS UT TO WAXHAW OR. UT TO WAXHAW OR. UNION CATAWBA 870407 2 NO. FUNGUS S. FORK CATAWBA R.(WYUE) 02145442 GASTON CATAWBA 870526 31 2153 5870 YES@OSCIGEM CATAWBA CREEK (WYLIE) 02145524 GASTON CATAWBA 870526 50 4927 13032 YES@ OSCI GEM APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUIME DENSITY BLOOM FISH KILL? S. FORK CATAWBA R.(WYLIE) 02145442 GASTON CATAWBA 870623 47 6791 7100 YES, MELOSIRAS S. FORK CATAW13A R.(WYLIE) 02145442 GASTON CATAWBA 870723 10 2882 2463 NO CEDARWOODPOND CEDARWOOD-1 MECKLENBURG CATAWBA 870812 7663 19303 YES@ GREENS. BLUE-GREENS YES CLEATON POND CLEATON-1 MECKLENBURG CATAWBA e708I 8 3050 11355 YES.GREENS, DLATOMS.EUGL YES COOKPOND COOK-1 GASTON CATAWBA 1170821 19 19089 59044 YES@CRYPTOPHYTESGREENS YES HUNSUCKER FARM POND HUNSUCKER-1 CATAWBA CATAWBA 870918 YES LITHIUMEFFLUENT LITHIUM-1 GASTON CATAWBA 870924 5740 162808 YM GRIM SUMMERLIN POND SUMMERLIN-1 MECKLENBURG CATAWBA 880902 160 14872 8953 YES, GREENS. CRY. EILU&GREENS LAKE WYLIE CTBCKC0VE GASTON CATAWBA 890706 27 6683 24573 'YES IRWIN CREEK 02146300 MECKLENBURG CATAWBA 890802 10 3000 4629 NQ BUT PERIPHYTON CRICKETLAKE CRICKET-i MECKLENBURG CATAWBA 890823 54 333762 54502 YES@ CHL FLAT BRANCH BRAGGPOND MECKLENBURG CATAWBA 900614 10 YES, CHL-CLOSTERIOPSIS YES GRANTSPOND GRANTS-1 GASTON CATAW13A 900621 14 5037 4658 YES, EMCHL.CRY W(LSONS LAKE WILSONS LAKE MCDOVA:U- CATAWBA 900730 10 813 6201 ND YES STEELE CREEK STEELE CREK MECKLENBURG CATAWBA 900801 5 3712 1572 NOBUTCYA SOUTH FORK POND CRAMMERTON-1 GAS" CATAWBA 900820 1900 194116 1388760 YES. CHL-CHLOROGONIUM EUCHLORUM YES CROWDERSCREEK CROWD-15A YORK SC CATAWBA 900905 35 12551 56948 YES, EUG. CYA-MER TEN LAKE NORMAN LAKE NORMAN-2 CATAWBA CATAWBA 901003 YES, CYA-ANAC CYA LAKE NORMAN DAVIDSON-1 IREDELL CATAWBA 901016 6 695 3668 N:) COMMSOOPE LAKE COMIMSOOPE-1 CATAWBA CATAWBA 901114 3500 1051475 38829 YES, CYA-COELOSPHAERIUM NAEGELIANUM BLACKWATER RIVER 0205007150 GATES CHOWAN 850318 2 192 367 ND CHOWAN RIVER 02047370 GATES CHOMIAN 860827 1 75 221 N:) CHOWAN RIVER 02050079 CHOWAN CHOWAN 860827 2 37 285 N:) CHOWAN RIVER 0205363575 CHOWAN CHOWAN 860827 29 2083 6347 ND CHOWAN RIVER 0205363575 CHOWAN CHOWAN 861003 ID, BLUE@GREENS CHOWAN RIVER 02053632 BERTIE CHOWAN 861027 ID, BWEGREENS-ANABAENA CATHERINE OR. CATHERINE-1 BERTIE CHOWAN 870613 3123 18167 YES, ANABAENA CATHERINECR. CATHERINE-1 BERTIE CHOWAN 870707 4835 5765 ID, CRY, DIN, ANAB CHOWAN R. BELOW HOLIDAY 1 0205360615 BERTIE CHUWAN 870707 82 28059 17702 YES,ANABAENA PORTORICENSIS ARROWHEAD BEACH AFIROWHEAD CHDIWAN CHOWAN 870708 19291 3960 YES,ANABAENA PORTORICENSIS CHOWAN RIVER DYE PLANT CHOWAN CHOIWAN 870805 43060304 5415292 YESANABAENA PORTORICENSIS CHOWAN RIVER MARKER5 BERTIE CHOWAN 870805 283196 30133 YES,ANABAENA PORTORICENSIS CHOWAN RIVER 02053632 BERTIE CHOIWAN 870805 36 23352 4920 YES,ANABAENA PORTORICENStS APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUIVE DENSITY BLOW FISH KILL? CHOWAN RIVER 02053652 BERTIE CHOWAN 870805 9 4909 1287 NO, SOME ANAB PORT ARROWHEAD BEACH ARROWHEAD-1 CHOWAN CHOWAN 870810 170 21808 11840 YES,ANARAENA PORTORICENSIS CHOWAN RIVER 02053244 HERTFORD CHUWAN 870810 111 2292 3319 NO. SOME ANAB POFTr CHOWAN RIVER 0205325510 BERTIE CHOWAN 870810 19 5548 3938 YESANABAENA PORTORICENSIS CHOWAN RIVER 02053632 BERTIE CHOWAN 870810 42 15643 5629 YES.ANABAENA PORTORICENSIS CHMAN RIVER 02053632 BER`nE CHOWAN 871019 2 @46 1089 N:) ,CHOWAN RIVER 0205360615 BERTIE CHOWAN 880602 a 684 1671 NO CHOWAN RIVER 02053632 BERTIE CHOWAN 880602 17 1325 2906 NEI CHOWAN RIVER 02053632005 BER`rIE C40WAN 880602 9 2239 3710 ND CHOWAN RIVER 02053632095 BERllE CHOWAN 880602 14 915 2981 NO CHOWAN RIVER 02053652 BEFTnE CHOWAN 880602 13 620 3265 NO CHOWAN RIVER 02053652005 BERTIE CHOWAN 880602 23 6931 7022 YES, PREVIOUSLY? CHOWAN RIVER 02053652095 BERTIE CHUWAN 880602 6 6038 16421 YES, PREVIOUSLY? CHOWAN RIVER 02053632 BER'nE CHOWAN 890522 25 4507 8851 NQ DINCRYCHR CHOWAN RIVER CANAL-ARROW CI-IMAN CHOWAN 890716 170 493 786 YES, CYA CELLS DEGRADED-ANAB SUB OD CHOWAN RIVER CHOWAN-3M CHOWAN CHOWAN 890716 a 892 1071 NO CHOWAN RIVER CHOWAN-1 BERTIE CHOWAN 890718 170 5506 8909 YES, CYA - ANAB SUB CHOWAN RIVER 02053632 BEFTnE CHONAN 890718 1 1745 2232 NO, BUT CYA-ANAB SUB CHOWAN RIVER 02053652 CHOWAN CHOWAN 890719 2 478 565 NO. BUT CYA-ANA9 SUB CHOWAN RIVER CHOWAWCOL BERTIE CHOWAN 890801 NS 151798 270765 YES, CYA - ANAB SUB, ANAB POR CHOWAN RIVER CATHERINE-1 CHOWAN CHOWAN 890808 54 30583 10970 YES, CYA- ANAB PCR, ANAB SUB CHOWAN RIVER INDIAN-2 BERTIE CHOWAN 890808 35 15056 9084 YES. CYA - ANAB POR CHOWAN RIVER INDIAN-3 BERTIE CHOWAN 890008 360 26978 13975 YES, CYA - ANAB POR CHOWAN RIVER 02053632 BEFME CHOWAN 890808 3 1197 827 NO, BUT CYA-ANA9 SUB CHOWAN RIVER 02653632 BERTIE CHOWAN 890816 10 1850 4051 NO, BUT CYA-ANAB SUB CHOWAN RIVER 02053652 CHOWAN CHOWAN 890816 26 2763 2763 NO. CYA-ANAB POR CHMAN RIVER 02053632 BEFME CHOWAN 891010 4 358 571 NO. CYA DIN, EUG CHUWAN RIVER 02053652 CHOWAN CHUWAN 891010 400 23595 3756 YES.CYA C14MAN RIVER 02053652 CHOWAN CHOWAN 891127 1 1222 274 N:) CHOWAN RIVER 02053632 BERTIE CHOWAN 900612 2 279 681 NO CHOWAN RIVER 02053652 BERM CHOWAN 900612 3 666 1380 NO CHOWAN RIVER CHOWAN-9 BERTIE CHOWAN 900612 4 305 1002 N:) CHOWAN RIVER ARROWHEAD-1 13ERTIE CHOWAN 900619 15 11656 13695 YES CYA, CHL, CRY, BAC CHOWAN RIVER CATHERINEA BEFTrIE CHOWAN 900619 24 5330 5066 YES.CYA APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUklIE DENSITY BLOW FISH KILL? CHOWAN RIVER CHOWAN-4 BERTIE CHUWAN 900619 12 3034 5401 NO CHDWANRfvER INDIAN-2 BERTIE CHOWAN 900619 A 1 3390 S590 N:) CHMAN RIVER ROCKYHOCK-i 13ERTIE CHOWAN 900619 12 6857 10307 YES. CYA CHOWAN RIVER 0205360615 BERTIE CHOWAN 900619 9 1684 2533 N:) CHOWAN RIVER 02053632 BERTIE CHOWAN 900619 10 3475 4076 ND CHOWAN RIVER 0205363575 BERTIE CHOWAN 900619 6 14765 12438 YES,CYA CHOWAN RIVER 02053652 BERTIE CHDNAN 900619 6 11552 8860 YES@ CHLMD, CRY CHOWAN RIVER 02053652005 BERTIE CHOWAN 900711 13095 3419 YES, CYA-ANAB POR. CRY CHOWANRIVER CATHERINE-7 BERTIE CHOWAN 900712 350 32805 8122 YES. CYA -ANAB FOR CHOINAN RIVER CHOWAN-5 BERTIE CHOWAN 900712 250 69869 15897 YES, CYA -ANAB POR CHOWAN RIVER INDIAN-8 BERPE CHOWAN 900712 200 23698 6551 YES, CYA -ANAB Pon CHOWAN RIVER 02053632 BERM CHuWm 900712 120 31330 8036 YES, CYA -ANAB FOR CHOWANSIVER 02053652 BERPE CHMAN 900712 17 3335 1910 ND CHOWAN RIVER BENNETTS BERTIE CHOWAN 900712 270 22603 6521 YES, CYA -ANAB POR CHOWAN RIVER INDIAN-8 BERTIE CHOWAN 900726 35 7142 3474 YFS.CYA-ANA13POR,CRY CHOWAN RIVER 02053632 BERTIE CHOWAN 900802 14 5179 2180 YES. CYA -ANAB POR. CRY CHOWAN RIVER 02053652 BERTIE CHOWAN 900802 16 6245 2725 YES, CYA -ANAB POR, CRY CHOWAN RIVER CHOWAN-ROCK BERTIE CHOWAN 900802 100 10923 2306 YES, CYA -ANAB POR, ANAC CYA CH0WM RIVER CHOWAN-3 BERTIE C"UWAN 900912 370 N/A YES, CYA -ANAC CYA CHOWAN RIVER 02053632 13ERTIE CHOWAN 901016 6 3652 1077 YES, CHLMD, CYA CHOWAN RIVER 0205360615 BERTIE CHOWAN 901016 4 1388 256 N:) CHOWAN RIVER 02053574 BERTIE CHOWAN 901016 6 5tO9 699 ND UT TO NORTH TOE MITCHELL FRENCH BR 850320 tD, ENRICHWNT CANE RIVER 0 SIOUX 03464000 MITCHELL FRENCIABS, %%32% 1243 3616 NO, "04 PH SANTEELAH LAKE SANTEELAH2 GRAHAAA LITTLE TENNESSEE 891101 111 N/A YES, CYA-ANACY STIS SANTEETLAH LAKE SANTEETLAH-1 GRAI-M LITTLE TENNESSEE 900620 27 10780 2492 YES. CYA-ANA13 FOR, ANAC CYA INTRACOASTAL WATERWAY @ SHALOTTE BRUNSWICK LLNIBER 86illo 267 1071 N3 DUNNS PCND DUNN-I ROBE" LUMBER 870624 45661 41404 YES, OSCI P&S. SCENEDESMUSES HOLEEN 13EACH HOLDE14-1 BRUNSWICK UJUGER 870924 ID. DINOFLAGELLATES DUNNSPOND DUNN-I RCEE90N LUMBER 880408 220 20397 117040 YES, 13LUE-GR - ANACYSTIS BRUCE POND BRUCE-1 ROBESON UA43ER 880531 NS 1451 833 NO. EUG-TRACHELOMONAS VOLVOCINA APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUME DENSITY BLOOM FISH KILL? ECHO LAKE ECHO LAKF-I MOORE LLFABER 900227 1 70 934 I'D LAKE PINEHURST LP-1 MOORE U-Nam 900718 3 710 833 IND SWIFT CREEK 02092084 CRAVEN NEUSE 840808 110 YES. GREENS@ CRYPTOPHYTES SLOCUMCREEK MARKERS CRAVEN NEUSE 840816 38 50000 46379 YES, DP40FLAGELLATES BROADCREEK @ MOUTH MARKER04 CARTERET NEUSE 840816 460 160933 8386 YES, DINOFLAGtLLATES HOOD SWAMP DRAINAGE POND WAYNE NEUSE 841022 960 177696 208314 YES. EUGIINOPHYTES GOODWINCREEK CRAVEN NEU3E 850108 62 71056 29837 YES, DINOFLAGELLATES-PROROCENTRUM SANDY RIJN CRAVEN NEUSE 850108 45 82262 36125 YES, DINOFLAGELLATES-PROROCENTRUM TUCKERCREEK CRAVEN NEUSE 850108 91 67095 28893 YES, DINOFLAGELLATES-PROROCENTRUM CRABTREE CREEK @ HWY 54 WAKE NEUSE 850522 26070 7803 YES, 13LUE-GREENS WALNUT CREEK WAYNE NEUSE 850816 4 1112 9034 N:) NEUSIE RIVER MOUTH OF TRENT CRAVEN NEUSE 850829 40 3538 2066 YES, DINOFLAGELLATES, DIATOMS NEUSE RIVER 02092162 CRAVEN NEUSE 850918 46 2815 33802 YES, CRYPTOPHYTES, DIATOMS TRENT RIVER @BUSINESS70BRIDGE CRAVEN NEUSE 850918 18577 72670 YES,CRYP.DIATOMS YES OD NEUSE RAER @ WILDLIFE RAMP CRAVEN NEUSE 850918 7772 49960 YES, DIATOMS, CRYPTOPHYTIES, DINOFLAGELLATES CONTENTNEACREEK ABOVERR WILSON NEUSE 850920 N:) WENDELL LAKE JOHNSTON NEUSE 851108 ID, DIATOMS, BLUE-GREENS NEUSE RIVER@ ORIENTAL 02092674 PAMLICO NEUSE 860401 Is 5346 28416 YES, CYCLCTELLA LITTLELICKCREEK 0208700780 DURHAM NEUSE 860513 400 21847 39916 YES@ GREENS LITTLE LICK CREEK 0208700700 DURHAM NEUSE 860616 68 450 728 tD, HIGH CHLA SOME EUGLENOF44YTES PIGEMHOUSECREEK 0208732544 WAKE NEUSE 860620 22 3628 6987 NO, ENRICHED THOUGH FALLS OF THE NEUSE RESERVOIR FALLS@ 185 DURHAM NEUSE 860716 280 17692 11966 YES@ GREENS@ EUGLENOPHYTES FALLS OF THE NEUSE RESERVOIR NEUDIO DURHAM NFUSE 860721 19 13742 41808 YES.GFIEENSCRYPTOPHYTIES YES MIDWCREEK 02088000 JOHNSTON NEUSE 860721 a 641 7220 I'D YES FAIRGROUNDS POND WAKE NEUSE 860729 1768 4280 IDBLUEGREENS TRENT RIVER 0209256050 CRAVEN NEUSE 860923 66 2863 183072 YES, OLISTHODISCUS NEUSE RIVER 02092586 CRAVEN NEUSE 860923 26 7730 36859 YES. OINOFLAGELLATES4`ROROCENTRUM UT TO NORTHWEST GREEK FAIRFIELDHAR. CRAVEN NEUSE 861010 31 110694 83850 YES,DIATOMS YES SLOCUM CREEK CRAVEN NEUSE 861013 49 3065 10631 YES CONTENTNEA MEM SEWAGE PITT NEUSE 861013 NIA, FILAMENTOUS GREENS, ULOTHRIX NEUSE RIVER 02092092 CRAVEN NEUSE 861028 ID.ANAC CYA, SALT WEDGE TRENT RIVER 0209256050 CRAVEN NEUSE 861028 150 2863 183072 YES, OLISTHODISCUS PAULA HARRIS POND PAULA HARRIS POND WAKE NEUSE 870409 3 N/A. FILAMENTOUS 4 APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUKE DENSITY BLOW FISH KILL? HAYWARDCR. HAYWARD-2 GRAVEN WUSE 870609 50 4517 46991 YES, CYCL SP CRYSTALLAKE CRYSTAL-I CRAVEN NEUSE 870710 10435 113197 YES@OSCIGEM WENDELLLAKE WENDELL-I JOHNSTON NEUSE 870814 230 54681 838497 YES, ANACYSTIS CYANEA ENO RIVER ENC14EFLANO ORANGE NEUSE 870818 8957 31444 YES, GREENS LIT TONORTHWEST CREEK FAIRFIELD HAR. CRAVEN NEUSE 870923 le 4950 96427 YES,09CIGEM,CYCL YES DATA GENERAL POND DOP JOHNSTON NFUSE 871008 11678 16945 YES@ EUG.LENOPH`YTES YES NEUSE RIVER NEUSE-CYC CRAVEN NEUSE 880122 17 4962 7424 NQ CYCLCITEUA PRO MIN SMrrHCAEEK SMITH@GE2,GEII CRAVEN NEUSE 880122 23 NIA FtL-MELOSIRA MONCILIFORMIS LOWER BROAD CREEK BROAD 3A. 3B PAMLICO NELISE 880202 NS NIA FIL GREENS-CLADOPHORA WHITAKERCREEK WHITAKER-1 PAMLICO NEUSE 880202 NS N/A MELOSIRA MONOLIFORMtS UPPER BROAD CREEK BROAD-i CRAVEN NEUSE 880210 33 21154 52057 YES, CYCLCFTELLA SPECIES 3 UPPEREIROADCREEK BROAD-1 CRAVEN NEUSE 88D215 44 6996 36510 YES, CYCLOTELLA SPECIES 3 NEUSE RIVER PITCH CRAVEN NEUSE 880415 @l 140 210 N:) FALLS OF THE NEUSE RESERVOIR NEUDI 3 GRANVILLE NEUSE 880601 210 29487 44254 YES, CRYP'r0PHYTES RIVER BEND CANALS RrVER-BEND CRAVEN NEUSE 880614 510 108802 90837 YES. GREENSCARTERIA LITTLE RIVER 02085241619 DURHAM NELISE 880614 6 N/A FILAMENTOUS GREENS BELL FAMILY POND BELL POND WAKE NEUSE 880706 80 N/A FILAMENTOUS GREENS-OEDOGONIUM NEUSE RIVER RIVERDALE CRAVEN NEUSE 880801 26 4934 8734 NO, EUG. CRY. BL-GREENS LAKE ORANGE NEUDDB ORANGE NEUSE 880810 13 1744 3337 NO LAKE ORANGE NEUD082 ORANGE NEUSE 880810 9 2076 2638 NO LAKE ORANGE NEUD0134 ORANGE NEUSE 880810 9 2432 3476 N:) CORPORATION LAKE NEU0DCl ORANCIE NEUSE 880810 15 601 1368 NO, BUT CISCI MATS PRESENT RALEIGH GOLFCOURSE POND GOLF-BL WAKE NEUSE 660823 570 36280 55179 YES, EUGLENOPHYTES YES LAKE WHEELER LW-I 25% WAKE NEUSE 881027 @l 834 1089 NO, FIL BL-GR TREW RIVER 0209256050 CRAVEN NEUSE 881116 3 9780 8152 YES,CRYPTCIPHYTES MACGREGOR GOLF COURSE P MACGREGOR PCND WAKE NEUSE 881208 NS YES, BLUE-GREEN LAKE WHEELER LW43OCK WAKE NEUSE 881220 i6o 19592 12112 YES, F(L BL-GR - ANABAENA MACGREGOIR GOLF COURSE P MACOREGORPOIND WAKE NEUSE 890427 @i N/AFILCHO-OEDOGONIUM NEUSERIVER 02092682 PAMLICO NEUSE 890525 29 2845 18080 YES, BAC BEARDCREEK BEARD-A PAMLICO NEUSE 890601 NS 8193 26552 YES, BAC, DIN BEARD CREEK BEARD-9 PAMLICO NEUSE 890601 38 13050 23406 YES. M, DIN BEAROCREEK BEARD-C PAMLICO NEUSE 890601 NS 10699 10044 YES, BAC. DIN HANCOCK CREEK HANOCICK-E CRAVEN *USE 890601 20 17769 33540 YES, BAC. DIN NEUSE RIVER NEUSE-D CRAVEN NEUSE 890601 69 42649 12461 YES, BAC, DIN APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUhE DENSITY 13LOOM FISH KILL? LAKE JCHNSON JOHNSON-1 WAKE NELISE 890605 91 254`10 24844 YES, CYA YATES FOND YATES- I WAKE NEUSE 890615 3 1136 3824 NO, CHL NEUSE RIVER NEUI 31 X CRAVEN NELISE 890619 250 35829 109354 YES, 13AC - CYCLOTELLA NEUSE RIVER 02092586 CRAVEN WILE 890619 100 11367 247357 YES, BAC - CYCLOTELLA IFYKEWOODPOND FYKEWOMI WILSON NELISE 890623 119 7382 22290 YES@CHL DAWSON CRE EK DAWSON-X CRAVEN NELISE 890714 NS 19958 49.087 YES, CHR, BAC, DIN DAVVSONCAEEK DAWSON-Y CRAVEN NELLIE 890714 NS 8313 51,533 YES, CHR. BAC, DIN FAIRGROUNDS POND FAIRGROIJNDS POND WAKE NELISE 890721 .6 25179 204383 YES,CYA NEUSE RIVER NEUSE-1 PAMLICO NELISE 890804 300 25298 33715 YES, DIN, BAC. CYA NELISE RIVER NEUSE-2 PAMLICO WUSE 890804 33 2582 48039 YES. DIN, BAC, CYA NELISE RIVER NEUSE-3 CRAVEN NELISE 890804 73 5369 52406 YES, DIN, BAC, CYA NEUSE RIVER NELISE-4 PAMLICO NELISE 890804 38 3318 10097 YES, DIN, BAC, CYA NEUSE RIVER NEUSE-lA PAMLICO NELISE 890807 38 alai 14907 YES. DIN, BAC, CYA NEUSE RIVER NELISE-2B PAMLICO WUSE 890807 38 4603 15023 YES. DIN, BAC, CYA NELISE RIVER NEUSE-3C PAMLICO NELLIE 890807 46 4359 20322 YES, DIN, BAC. CYA 00 NEUSE RIVER BEARD (NEUSE-E) CRAVEN NELISE 890809 77 14303 46816 YES, DIN. CYA NEUSE RIVER GOOSE (NELISE-B) PAMLICO NEUSE 890809 35 5036 8734 YES, DIN, CYA NELLIE RIVER KENNEL (NEUSE-F) PAMLICO NELISE 890809 130 23043 29347 YES, DIN, CYA NELLE RIVER 02092162 (NELISE-A) CRAVEN NELLIE 890809 1 320 943 N3 NEUSE RIVER NELI`139 PAMLICO NELISE 890814 14 30460 34239 YES, DIN, CYCL, cYA NELLIE RIVER 02092586 PAMLICO KpJSE 890821 94 7469 56424 YES, SAC, CYA, DIN NELISE RIVER NEUSE-MINN PAMLICO WUSE 890918 NS 35531 35054 YES. DIN-PERI TRO, CYA, CHL WENDELL LAKE WENDELL-1 JOHNSrUN NEUSE 890919 130 14676 4949 YES. CYA-ANABAENA WENDELL LAKE WENDELL-2 JOHNSTON WUSE 890921 200 29219 13043 YES,CYA-ANABAENA SPP, ANACYSTIS NELLE RIVER NEU139 CRAVEN NELLIE 891017 31 6855 96777 YES. BAC, CY& DIN LAKE WHEELER DOCK WHEELER DOCK WAKE NELISE 891031 54 1394 1409 YES.CYA, BLIT PATCHY NEUSE RIVER NEUl3tX CRAVEN WUSE 8911114 100 25442 30046 YES. BAC GARNERPOND GARNER POND WAKE NELISE 900228 130 8306 4944 YES, ELIO COBBLE POND G013BLE POND WAKE NELISE 900315 17 N/A FIL GREENS RAYRIVER ALLIGATOR-5 PAMLICO WLISE 900315 140 35788 33191 YES DIN PRO MIN RAY RIVER CHAPPEL-7 PAMLICO NE1JSE 900315 71 12178 13364 YES DIN PRO MIN, CRY BAY RIVER RACCON-2 PAMLICO NELLIE 900315 56 7414 11005 YES DIN PRO MIN, BAC BAYRIVER TRENT-1 PAMLICO NELISE 9003i5 110 25910 24980 YES DIN PRO MIN RAY RIVER VANDEMERE-8 PAMLICO wim 900315 7 1414 1834 ND APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUME_ DENSITY BLOW FISH KILL? NEUSE RIVER NEUI 39 PAMLICO NEUSE 900319 140 4954 19128 YES. PRO MIN. HET TAI. BAC-SKEL POT NEUSE RIVER NEUI 39 PAMLICO NEUSE 900524 25 1044 11398 YES. EIAC-CYCL SP3. DIN PERI TRO NEUSE RIVER NEU131X PAMLICO NEUSE 900524 120 47`10 11049 YES, DINGYM NEL.GYR AURCRY NEUSE RIVER NEU131F CRAVEN NEUSE 900627 16 1066 10365 YES, EIAC-CYCL SP3, CRY.CHR NEUSE RIVER 02092586 CRAVEN NEUSE 900627 27 13190 27077 YES, XAN-OLIS CAR,CRY,CHR LAKE WENDELL WNDL-W JOHNSTON WUSE 900705 270 58404 13014 YES, CYA - ANAB, APHA FLO, ANAC CYA ORIENTAL WWTP LAGOON ORIENTAL-LAG PAMLICO NEUSE 900718 90 13.773 19041 YES, CHL-CHLLA, CYA ANABS RAC NEUSE RIVER NEU139 PAMLICO NEUSE 900724 21 8868 12578 YES. DIN, CRY, CYA-PHOR ANG NEUSE RIVER NEU131X PAMLICO WUSE 900724 23 2957 18779 YES. DIN. CRY NFUSE RIVER NEUI 31 F CRAVEN NEUSE 900725 34 2438 3756 YES. DIN-GYR AUR,RAC.CRY VET SCHOOL VET S-1 WAKE NEUSE 900812 4800 96001 61722 YES CYA - ANAC CYA YES VET SCHOOL VIET S-2 WAKE NEUSE 900812 140 38055 24339 YESEMCYA YES VET SCHOCIL VIET S-3 WAKE NEUSE 900812 88 15001 18459 YES EUGA CYA YES NEUSE RIVER NEUSE-12 CRAVEN NEUSE 9008`17 13 1046 3052 N:) YES MRIVER ENO-1 DURHAM NEUSE 900821 250 30120 6580 YESi EUG. DO w ENORFVER ENO-2 DURHAM NEUSE 900821 83 30325 6359 YES@ EUG. NEUSE RIVER GREENSPRINGSA CRAVEN NEUSE 900827 29 2223 13975 YES, XAN-OLIS CAR, CRY NEUSE RIVER GREENSPRINGS8 CRAVEN NEUSE 900827 26 11278 36102 YES, XAN-OLIS CAR, CRY NEUSE RIVER GREENSPRINGSC CRAVEN NEUSE 900827 51 11984 35170 YES, XAN-OLLS CAR, CRY FALLSRESERVOIR NEU010 GRANVILLE NEUSE 900912 33 5271 12578 YES, EUG, CYA NEUSE RIVER NEUSE-2 CRAVEN NEUSE 900916 25 5409 66381 YES. EIAC-CYCL SP3, CYA YES NEUSE RIVER NEUSE-4 CRAVEN NEUSE 900916 25 4960 90488 YES, BAC@CYCL SP2, CYA YES NEUSE RIVER NEUSE-7 CRAVEN NELISE 900916 22 10416 84898 YES, W-CYCL SP3,CRY YES NEUSE RIVER NEUI 31 X CRAVEN NEUSE 900925 1$ 5474 172591 YES, BAC-CYCL SP2 YES HART POND HARTPOND GRANVILLE NEUSE 900926 N/A YES, CYA - ANAB PORT YES NEUSE RIVER 02092162 CRAVEN NEUSE 900926 39 2485 45419 YES. DIN, EIAC-CYCL SP2&3 YES NEUSE RIVER NEU131F CRAVEN NEUEE 900926 53 19670 129967 YES. EIAC-CYCL SP2 YES MILLCREEK MILL CR-R PAMLICO NEUSE 901204 17 7776 9549 YES, DIN-PRO MIN MILL CREEK MILLCAMAR PAMLICO NEUSE 901204 140 88369 79133 YES. DIN-PRO MIN PHELPS LAKE NR BOAT RAMP WASH14GTON PASOL)OTANK 840416 170 23923 1901 YES, GREENS-MOUGEOTIA ALBEMARLE SOUND 02081145 CHOWAN PASOLIOTANK 840524 2 822 1310 N:) ALBEMARLE SOUND 02081172 N. SHORE PERQUIMANS PASQUOTANK 840723 11 394 1398 N:) ATLANTICOCEAN NR COROLLA CLIRRITUCK PASCILICITANK 840809 YES, DINOFILAGELLATESPROROCENTRUM APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE cHL-a BIOVOLUME DENSITY BLOOM FISH KILL? ALBEMARLE SOUND MARKER 3 TYRELL PASOLIOTANK 840822 1747 NO, ALBEMARLE SOUND 02081172 PEROIJIMANS PASQUOTANK 840022 10 4193 N:) PASQUOTANK RIVER 02043862 PASQUOTANK PASQUCTANK 940925 7122 725 YESBLUE4GREEN PERGUIMANS; RIVER NR wHrrE 14AT LANDING PERQUIMANS PASQUOTANK 841005 6935 1042 YES, BLUE-GREEN PASQUOTANK RIVER HWY 156 PASCKX)TANK PASOUOTANK 841009 5433 3494 YES ALBEMARLE SOUND 02081172 85% TYRELL PASQUOTANK 850524 2 1522 4498 ND SCUPPERNONG. @ MOM MARKER 03 TYRELL PASQUOTANK 850822 ID ALBEMARLE SOUND 02081145 50% CHOWAN PASQUICTANK 851019 ID, BLUE-GREEN PASQUOTANK RIVER 02043862 PASOLIOTANK PASQUOTANK 860730 41 2484S 28648 YES, BLU&GREENS, GREENS LITTLE RIVER NEAR WEEKSVILLE 02043884 PASQUOTANK PASOUCTANK 860730 3059 32055 YES@ GREENS, BLUE-GREENS AL13EMARLE SOUND @ BLUFFS CHOWAN PASOUCITANK 870707 ID, ANACYSTIS CYANE A YEOPIM RWR YEOPIM PEROUFMANS PASOUGTANK 870709 82692 114595 YES, ANABAENA PORTOR ICENSIS ALBEMARLE SOUND 02081172 CHOWAN PASOUCTANK 070709 6 947 4367 NO AL13EMARLE SOUND 02081172085 CHOWAN PASQUOTANK 870709 9 725 3394 @O ALBEMARLE SOUND 02081145 CHOWN PASC)UOTANK 870710 10 933 4309 NOI ALBEMARLE SOUND 02081145005 CHOWAN PASGI"ANK 870710 3 864 2492 NO, 01) 'I'- LITTLE RIVER 02043884 PERQUIMANS PAsQuaTANlK 880718 51 11528 115992 YES, BLUE 40nEENS ALLIGATOR ALLIGATOR CREEK TYRELL PASCK)OTANK 890118 NS N/A NtA FILAMENTOUS CHL ALBEMARLE- SOUND ALBEMARLE-A WASHINGTCN PASQUIOTANK 900417 N/A FIL CHL-CLADOF440RA SP ALBEMARLE-SOUND ROANOIKE-B WASHINGTON PASOWTANK 900417 N/A FtL BAC-MELOSFRA VAR. CHL SPIROGYRA, ULCITHRIX AL13EMARLE SOUND ALBBEACH WAS14INGTON PASOLIOTANK 900706 N/A FIL CYA-TOLYPOTHRIX SP KENDROCKSCREEK 02081185 WASHINGTON PASOLK)TANK 900712 30400 2030 YES@ CHLMQ CRY ALLIGATOR RIVER 0208117810 TYRELL PASOUCTANK 900820 14 4456 14761 YES. XAN-OLIS CAR,CRY,CYA ROANOKE RIVER @ SAN SOLICI 02081141 BERTIE ROANOKE 850320 4622 2708 NO CASHIE RIVER @SAN SOUCI 02081134 BERTIE RON40KE 850710 2141 7803 N[) NUTBUISH CREEK ROA037A VANCE FKW40KE 860722 65 11136 102716 YES, 13LUE-GREENS FLAT CREEK @ HWY 39 VANCE ROANOKE 860722 16 9620 92584 YES, 13LUE-GREENS BELEWSCREEK BELEWS CR L FORSYTH ROANOKE 890515 3 2055 804 N:) LIT BRUSHY FORK GREEK HOLT FERG-1 STOKES ROANOKE 890622 44 24387 19215 YES@ EUr% CRY ROANOKE RIVER ROAN40PE NETS WASHINGTON ROANOKE 900314 N/A FIL BAC - MELOSIRA ITA TE OTIS CRISP SAND PIT BEAUFORT TAR-PAMLICO 850315 6320 466 N:) YES PAMLICORrVER @ FIR TRESSLE, BEAUFORT TAR-PAMLICO 850402 NIA, MELOSPA SYNEDRA ON NETS WASHINGTON APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUkC DENSITY BLOONI FISH KILL? MRHAMCREEK WESTTRANSECT BEAUFORT TAR-PAMLIC0 850404 12 3827 1922 w PAMLICOAFVER @ MOUTH OF RATH BEAUFORT TAR-PAMLICO 850404 .9 2561 1415 NO RIVER PARK POND CREEK PITT TAR-PAMLIC0 851023 6 1834 2341 NO, BUT EUGLENCIPHYTESCOLORED WATER PAM-PUNGO JACKSCREEK BEAUFORT TAR-PAMLICO 860224 26201 24456 YE S, D INORAGELLATES- COLORED WATE A PUNGO, RIVER DOWN FROM "DAN CA, BEAUFORT TAR-PAMLICO 860226 12 4042 4629 YES, DINOFLAGELLATFS- COLORED WATER PUNGOCAEEK NR PARKERS MOTEL BEAUFORT TAR-PAMLICO 860226 170 52770 40760 YES, DINOFLAGELLATES- COLORED WATER PAM-PLING0 ROADSIDE DITCH BEAUFORT TAR-PAMLIC0 860226 71212 52872 YES, DINOFLAGELLATES- COLORED WATER ELATH CREEK STATION 01 BEAUFORT TAR-PAMLICO 860226 53 11977 14883 YES, DINOFLAGELLATES- COLORED WATER PAMLIOORIVER N SHORE FERRY BEAUFORT TAR-PAMLICO 860226 11 6193 5503 YES, DINOFLAGELLATES- COLORED WATER PAMLICO-PUNG0 NR PARKERS MOTEL BEAUFORT TAR-PAMLICO 860325 53 6818 160188 YES BATHCREEK STATION 41 BEAUFORT TAR-PAMLICO 660325 28 6132 128570 YES PAMLICORFVER @NSHCREFERRY BEALIFCIAT TAR-PAMLICO 860325 9 5893 13160 NO, FOLLOWUP RATH CREEK @ POINT BEAUFORT TAR-PAMLIC0 860414 NIA, FILAMENTOUS RED-BOSTRICHIA. GREEN ENTEFKAKXV+A PUNGOCREEK LOWER SITE BEAUFORT TAR-PAMLICO 860424 28 4289 52755 YES,CYCLOTELLA YES PUNGOCREEK SAMPLE #3 BEAUFORT TAR-PAMLICO 860424 48 6587 54852 YES,CYCLOTELLA YES% OD Ln PUNGOCREEK SAMPLE04 BEAUFORT TAR-PAMLICO 860424 160 14589 99222 YES, CYCLCITELLA YES PUNGOCREEK UPPER SITE BEAUFORT TAR-PAMLICO 880424 7 1654 6009 N:) YES PUNGOCREEK @ US 264 BRIDGE BEAUFORT TAR-PAMLICO 860424 22 2896 110,481 YES, CYCLOrELLA YES PAMLIOCIRIVER 0 BAYVIEW BEAUFORT TAR-PAMLICO 860507 N/A@ FILAMENTOUS-CLADOPHORA PAMILIOCIRIVER I MI ABOVE WHICHARDS BEAUFORT TAR-PAMLICO 860527 120 17944 121233 YES, CYCLCITELLA YES BROADCREEK BEACH BEAUFORT TAR-PAMLICO 860716 61 5449 43235 YES, CYCLOTELLA BATH CREEK DOWN FROM CRADLE BEAUFORT TAR-PAMLICO 860815 23 2953 31007 YES, CHAYSOPHYTESIOLISTHODISCUS GUT CRADLE GUT LOWERSITE BEAUFORT TAR-PAMLICCI 860815 150 18027 53804 YES, CHRYSOPHYTES40LISTHODISCUS CRADLE OUT UPPER SITE BEAUFORT TAR-PAMLICO 860815 680 72362 219057 YES, CHRYSOPHYTES40LISTHODISCUS PAMILICORIVER @TEXASGULF BEAUFORT TAR-PAMLICO srlasis 2315 A7032 it). BUT CRAB KILL YES BATH CREEK 02084534, uPsTnEAM BEAUFORT TAR-PAMLICO 860817 2418 33365 ID PAMLIOORWER 02084472 BEAUFORT TAR-PAMLIC0 860925 97 5626 22290 YES, CHRYSOPHYTES40LISTHODISCUS TRANTERS CREEK 02084392 PITT TAR-PAMLICO 860930 730 43119 122281 YES, CHRYSOPHYTES40LMTHODISCUS PAMLIOORIVER 02084472 BEAUFORT TAR-PAMLICO 861000 94 9833 40877 YES,CYCLOTELLA YES PAMLICO RIVER WHICHARDSOEACH BEAUFORT TAR-PAMLIC0 861215 930 '172841 137304 YES, PROROCENTRUM, HETEROCAPSA PAMLICO MARKER 16 PAM-16 BEAUFORT TAR-PAMLICO 870527 15210 199842 YES, CYCL SP2 PUNOOCA 0208457020 BEAUFORT TAR-PAMLIC0 870706 100 101048 113197 YES.PERITROC MOUTH OF BROAD CA. 0208451950 BEAUFORT TAR-PAMLICO 870708 30 6084 52755 YES, OSCI GE M, ANABS CIA PAMLICO RIVER @ HICKORY PT. 0208454450 BEAUFORT TAR-PAMLIC0 870708 27 20205 11389 YES.PERITROC APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUNE DENSITY BLOOM FISH KILL? HAWKINSBEACH HAWKINS-1 BEAUFORT TAR-PAMLICO 870713 4728 10307 YES,ANABSCIR, OSCI GEM. PERITRO, YES BAYVIEW BAYVIEW-I BEAUFORT TAR-PAMLICO 870715 19 8241 16333 YES.DINOFLAGELLATES.OSCI GEM YES BAYVIEW BAYVIEW-2 BEAUFORT TAR-PAMLICO 870715 20 3218 28474 YES,DINOFLAGELLATES,OSCI GEM YES BAYVIEW BAYVIEW-3 BEAUFORT TAR-PAMLICO 870715 14 5030 53105 YES,DINOFLAGELLATES,CSCI GEM YES PUNGOCR PUNGOI BEAUFORT TAR-PAMLICO 870720 11 3556 7453 IND PUNGOCR PUNG0-4 BEAUFORT TAR.PAMLICO, 870720 19 1792 9154 ND PLJNGOCR PUNGO16 BEAUFORT TAR-PAMLIC0 870720 56 22391 15722 YES, DINCIFLAGELLATES,OSCI GEM CILDFORT OLD FORT BEAUFORT TAR-PAMLICO 870723 6478 40527 YES, DINOFLAGELLATES,OSCI GEM KENNEDYCREEK KC-1 BEAUFORT TAR-PAMLICO 870730 200 19548 289980 YES, GREENS PAMLICO R. GPSL BEAUFORT TAR-PAMLICO 870731 22 4181 12752 YESDINOFLAGELLATES YES IPAMLICOR. POUND BEAUFORT TAR-PAMLICO 870731 30 9303 15430 YES, DINOFLAGELLATES YES PAMUICOR_ IC BEAUFORT TAR.PAMLIC0 870731 23 14701 21137 YES,DNOFLAGELLATES YES PAMLICOR. CONTROUB BEAUFORT TAR-PAMLICO 870804 60 11123 20700 YES. CRAB KILL, LYNGBYA CRAB KILL PAMUICOR. 9 BEAUFORT TAR-PAMLICO 870804 22 8953 50485 YES TAR RWR 02084171 PITT TAR-PAMLICO 870825 15 5968 12193 ID, TRACHELOMONAS OD BLOUNTSCREEK BLCUNT-i BEAUFORT TAR-PAMLICO 870831 88 34065 50135 YES,DINOFLArACYCL, OSCI GEM YES COTTON PATCH CANAL Opc BEAUFORT TAR-PAMLICO 870831 44 12059 26767 YES.CRYPTCl"lFS,DINOFLAGCYQ, YES PAMILICIORIVIER SWAN FT. BEAUFORT TAR-PAMLICO 870922 NO, FUNGUS BROADCREEK 02084151950 BEAUFORT TAR-PAMLICO 871005 28 3404 38781 YES@GREENSCHRYSOP9frES WASTE LAGOON WSL GRANVILLE TAR-PAMLIC0 871006 YES, RKXENIOPHYTES WHEELER POND WHEELER-P FRANKLIN TAR-PAMLICO 860125 10 1467 6143 NO, MALLOMONAS BATHCREEK BATH-EAST BEAUFORT TAR-PAMLICO 880126 41 32604@ 13917 YES DIN - PRO MIN BATHCREEK BATH-WEST BEAUFORT TAR-PAMLICO 880126 44 34409 9389 YES DIN - PRO MIN HAWKINS BEACH HAWKINS-1 BEAUFORT TAR-PAMLICO 8801131 NS 560964 93632 YES DIN - PRO MIN BATHCRFIEK BATH-1 BEAUFORT TAR-PAMLICO 880209 40 37027 11573 YES,HETERCCAPSA.PRDROCENTFIUM PAMLICO RIVER DURHAM CR-NET BEAUFORT TAR-PAMLICO 880209 NS N/A FIL GREEN-CLADOPHORA DUAHAMCFIEEK DURMAI*i BEAUFORT TAR-PAMLICO 880209 33 34387 14220 YES.HETERCICAPSkPROROCENTRUM OURHAMCREEK DURHAM-2 BEAUFORT TAR-PAMLIC0 880209 15 22807 7337 YES.HETEROCAPSARROROCENTRUM PAMLICO RIVER PRA (BROAD MO) BEAUFORT TAR-PAMLICO 880209 34 32358 8996 YES,HETEROCAPSAPRDROMNTRUM PAMLICO RIVER PR-2 (BTW`N BROAD BEAUFORT TAR-PAMLIC0 880209 43 35116 8135 YES,HETERCICAPSARAOROCENTRUM BLOUNTS) PAMLICO RIVER PR-3 (NR UPPER GOOSE BEAUFORT TAR-PAMLICO 880209 150 158273 35461 YES.HETERCICAPSARROAOCENTRUM CFq PAMLICO RIVER PR-5 (NR BATH MOUTH) BEAUFORT TAR-PAMLICO 880209 39 48498 21312 YES,HETEROCAPSAPROROMNTRUM PAMLICO RIVER PR-50 (BTWN 13ATH & BEAUFORT TAR-PAMLICO 880209 940 316037 60441 YES,HETERCCAPSAPROROCENTRUM DURHAM) PAMLICO RIVER PR-95 (NR DURHAM CR) BEAUFORT TAR-PAMLICO 880209 140 56996 14604 YES,HETERCCAPSAPROROCENTRUM APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUKE DENSITY BLOW FISH KILL? PAMLIOORWR 02004534 BEAUFORT TAR-PAMLICO 680209 130 95500 23175 YESHETEROCAPSAPROIX)CENTRUM PUNWCREEK PUNGOCR-11 BEAUF0R`T TAR-PAMLICO 880303 34 64334 65682 YEs.PnOROCENTRUM MINIMUM DUCKCREEK DUCK-3 BEAUFORT TAR-PAMLICO 880325 42 279311 19914 YES,PRCROGENTRLA4 MINIMUM HAVWKWSBEACH HAWKINS-i BEAUFORT TAR-PAMLICO 880325 34 35261 34588 YESPROROCENTRUM MINIMUM PUNOOCREEK PUNGOCR-1 BEAUFORT TAR-PAMLICO 800524 110 37310 5781 YESOINOFLAGELLATES PUNOOCREEK PUNGOCR-2 BEAUFORT TAR-PAMLICO 880524 46 13256 5348 YESDINOFLAGEULATES PUNGOCREEK PUNGO CR-3 BEAUFORT TAR-PAMLIC0 880524 34 2958 4979 YES,DINOFLAGEULATES PAMLICORrVER SWAN-5 BEAUFORT TAR-PAMLICO 880524 100 19661 143593 YES,SKELETONEMACOSTATUM PAMILICORIVER BATH-MO BEAUFORT TAR-PAMLICO 880527 20 5035 3581 YES,DINOFLAGELLATES PAMLICO RIVER CONTROL-B BEAUFORT TAR-PAMLICO 880527 le 9302 6944 YES.DINOFLAGELLATES PAMILICORIVER PAM-MID BEAUFORT TAR-PAMLICO 880527 19 6871 3808 YESPINCIFLAGELLATIES PAMLICO RIVER PAM-313 BEAUFORT TAR-PAMLICQ 880527 15 2669 2464 YFS.DINOFLAGELLATES PAMLIDOR.FVER PAM-9 BEAUFORT TAR-PAMLICO 880527 20 13551 7022 YESDINOFLAGELLATES DURHAMCREEX UPDURHAM BEAUFORT TAR-PAMLICO 880527 4 7764 3050 YESDINOFLAGELLATES PAML10ORrVER PAM-A (BATH MO) BEAUFORT TAR-PAMLICO 880603 ISIS 2567 1723 N:) OD PAMLIOORIVER PAM-14 (rG) BEAUFORT TAR-PAMLICO 880603 NS 1481 4425 N3 PUNGOCREEK PUNGO-264 BEAUFORT TAR-PAMLICO 880606 4 364 547 N:) PUNOORIVER SCRANTON-11 BEAUFORT TAR-PAMLIC0 880715 38 20251 7293 YES,DINOFLAGELLATES PAM LIDORIVER MARKER 0 17 BEAUFORT TAR-PAMLICO 880811 NS 1967 68827 YES, CYCL SP2 KENNEDYCREFEK KC-1 BEAUFORT TAR-PAMLICO 880907 91 3868 12097 YES,OUSMODISCUS, CRYPTOPHYrES KENNEDYGREEK KC-2 BEAUFORT TAR-PAMLICO 880907 120 7377 23233 YESOUSTHODISICUS. CRYPTOPHYTES KENNEDYCREEK KC-1 BEAUFORT TAR-PAMLICO 880923 64 2529 22797 YESCYCLOTELLA SP3, CRYPTCPHYTES KE14NECYCAEEK KC-2 BEAUFORT TAR-PAMLIC0 880923 64 7203 37034 YES,CYCLOTELLA SP3. CRYPTOPHYrES PAMLICORfVER PAM-1 (TG) BEAUFORT TAR-PAMLICO 881017 NS 1967 68827 YES,CYCLOTELLA SP2. CRYPTOPHYTES PAMLICORWR PAMI-2 (WHICHARDS) BEAUFORT TAR-PAMLICO 881017 NS 4876 9922 NO. CRYPTOPHYTES, DINCIFLAGELLATES RATH CREEK BATH CR @ 264 BEAUFORT TAR-PAMLICO 890106 42 NIA WA, FILAMENTOUS CHL WASTE LAGOON WSL GRANVILLE TAR-PAMLICO 890124 NS N/A YES, EUG-EUGLENA CAUDATA PANTIEGOCREEK PANTEGO-1 BEALIFORT TAR-PAMLIC0 890130 8 782922 12315 YES, DIN-POLYKRIKOS CHOC(WINITY BAY CHOC: BAY-1 BEALIFORT TAR-PAMLICO 890131 35 49231 31706 YES. BAC, DIN CHOGOWINITY BAY CHOC BAY-3 BEAUFORT TAR-PAMLICO 890131 20 16244 15,140 YES, W, DIN SIDNEY CREEK SIDNEY-2 BEALIFORT TAR-PAMLICO 890131 12 27924 44021 YES, BAC, DIN PAMLICORrVER PAMUPBR BEAUFORT TAR-PAMLICO 890202 6 11823 11413 YES, DIN. BAC. CRY PAMLICORWER OLD FORTA BEAUFORT TAR-PAMLICO 890203 2700 271697 23932 YES,DIN,ELIG PAMLICORrVER OLD FOST-2 BEAUFORT TAR-PAMLICO 890203 580 83393 22709 YES, DIN. ELIG APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUNE DENSITY BLOOM FISH KILL? FARMPOND FARM POND FRANKLIN TAR-PAMLICO 890208 NS N/A N/A F IL CHL-SPIROGYRA ZYGNEMA PAMLICORFVER PAMLICO-3A BEAUFORT TAR-PAMLIC0 890214 170 29038 12534 YES, DIN PAMLICORIVER TEXASGULF BEAUFORT TAR-PAMLICO 890302 ISIS YES. DIN-POLYKRIKOS PAMILICORIVER BLOUNTS-14 BEAUFORT TAR-PAMLICO 890530 72 9937 368590 YESBAC PAMLIOORrVER NORTH-8 BEAUFORT TAR-PAMLICO 890530 16 2415 f8779 YES,8AC PAMLICORIVER PAM-15 BEALIFORT TAR-PAMLICO 890530 78 5039 13190 YES,BAC PAMLICO RIVER PAMLICCIA BEAUFORT TAR-PAMLICO 090602 130 5147 176259 YES.BAC-CYCL SP 2 3 PAMLICORIVER 0208451950 BEAUFORT TAR-PAMLICO 890614 21 18475 447548 YES, BAC, CRY BATH CREEK 02084534 BEAUFORT TAR-PAMLICO 890614 26 17104 19355 YES, DIN. CRY, CHR BONDCREEK B060-1 BEAUFORT TAR-PAMLIC0 890625 11 1311 10612 CAMPBELLCREEK CAMPBELL-1 BEAUFORT TAR-PAMLICO 890626 16 2746 15023 YES, BAC, DIN, CHR CAMPBELL CREEK CAMPBELL-2 BEAUFORT TAR-PAMLIC0 890626 15 6436 37558 YES. BAC, DIN, CHR BONDCREEK BOND-2 BE_AUFCRT TAR-PAMLICO 890628 100 N/A 10612 YES, DIN, BAC-NITZ ACI PAMLIOORIVER BAYVIEW BEAUFORT TAR-PAMLIC0 890629 29 3491 42449 YES, BAC-CYCL SP2 PAMLICORFVER JAMACIA-1 BEALIFORT TAR-PAMLIC0 890713 58 2345 35287 YES, BAC-CYCL SP2,CRY.EUGG 01) 0) LAKE ROYALE LAKE ROYALE-2 GRANVILLE TAR-PAMLIICO 890714 NS YES, CYA PAMLICORWER PAM-1 BEAUFORT TAR-PAMLICO 890714 NS 1716 10796 NO, DINAAC SOUTHCREEK SOUTH-2 BEAUFORT TAR-PAMLICO 890714 NS 42504 107607 YES, DIN, BAC PUNGOCRI2EK PUNGOIA BEAUFORT TAR-PAMLICO 890718 31 8620 1316 YES, DIN. EUG. BLOUNTS BAY BLOUNTS-1 BEAUFORT TAR-PAMLICO 890726 25 1986 59918 YES. BA"YCL SP2, CYXPHOR ANG BLOUNTSCREEK BLOUNTS-2 BEAUFORT TAR-PAMLICO 890726 31 3561 56076 YES,BAC-CYCL SP2, CYA-PHOR ANG PAMLICO RIVER PAM-A BEAUFORT TAR-PAMLICO 890727 81 7280 164904 YES, BAC, DIN, EUG SOUTHCREEK SOUTH CR-l BEAUFORT TAR-PAMLICO 890728 210 100646 45419 YES. DIN, BAC, CYA SOUTHCREEK SOUTH CR-2 BEAUFORT TAR-PAMLICO 890728 94 5099 35811 YES, DIN, BAC, CYA LAKE ROYALE LAKE ROYALE-2 GRANVILLE TAR-PAMLICO 890807 50 4296 2795 YES, CYA, CHL PAMLICO RIVER STERLING BEAUFORT TAR-PAMLICO 890808 16 3401 13800 YES, DIN.13AC,CHI-CRY PUNCOCREEK CEE BEE MAR BEAUFORT TAR-PAMLICO 890822 160 71212 14208 YES, DIN. BA"YCL SP2 PUNGOCREEK PUNGOCRA BEAUFORT TAR-PAMLICO 891016 140 23714 67779 YES,PRY PUNGOCREEK PUNGOCR-5 BEAUFORT TAR-PAMLICO 891016 63 17080 22273 YES, BAC. PRY. DIN PUNGOCREEK PUNGOCR-7 BEAUFORT TAR-PAMLICO 891016 110 8435 12286 YES, CRY, BAC PANTEOOCRFFK 0208455850 BEAUFORT TAR-PAMLIC0 891017 ISO 15382 19652 YES@ CRY PAMLICORIVER BATH-M0 BEAUFORT TAR-PAMLICO 891019 19 2297 16421 YES, M. DIN PAMLICO RNER MD(ON-M0 BEAUFORT TAR-PAMLICO 891019 67 2965 3948 YES, DIN. BAC PANTEGOCREEK 0208455850 (PANTEGO BEAUFORT TAR-PAMLICO 891113 14 2430 3494 NO, EUG@ DIN, CHR CR APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUNE DENSITY BLOW FISH KILL? SOMCF7EEK S=HCREEK BEAUFORT TAR-PAMLICO 691220 3 844 937 NE) CHOCOWINrrY BAY CHOCOl_I BEAUFORT TAR-PAMLICO 900305 52 17393 26028 YES, BAC-SKEL OCIS PAMLICORrVER BACK CR-92 BEAUFORT TAR-PAMLICO 900525 6085 30046 YES. DIN PAMLICORIVER M3r BEAUFORT TAR-PAMLICO 900525 2000 33190 YES, XAN,BACCRY PAMLICORrVER BEAUFORT TAR-PAMLICO 900525 641 10132 YES, XAN,BAC,CHL PAMLICORIVER PAM-BATH CR BEAUFORT TAR-PAMLIC0 900525 1897 28474 YES, BAC,CRY PAMLICORfVER TAR057G BEAUFORT TAR-PAMLICO 900604 23 9955 46641 YES, DIN, BAC,CRY PAMLIOORfVER TAR057GO85 BEAUFORT TAR-PAMLICO 900604 15 713 26727 YES, BAC-CYCL SP2 PAMLICORIVER 02084534 BEAUFORT TAR-PAMLICO 900604 34 13577 88217 YES, XAN4:)LIS CAR,BA"YCL SP2 PAMLIOORIVER CHOOD-1 BEAUFORT TAR-PAMLICO 900604 31 2996 70224 YES, BAC-CYCL SP3. CRY CANAL-FAR CREEK ENGtEHARD RitE TAR-PAMLICO 900612 25 5780 97126 YES, BAC - CYCLOTELLA SP 2 & 3 PAMILIOORFVER TAR057G BEAUFORT TAR-PAMLIC0 900718 62 6602 7017 YES,DIN,CYACRY PAMLICORfVER PAM-WASH BEAUFCffr TAR-PAMLICO 900718 50 N/A YES, CYA-MER TEN BREAKING UP GREENVILLE UTILITIES POND GREENVILLE LIT PITT TAR-PAMLICO 900719 N/A FIL CYA-LYNG NANA, OSCI CHL,OSCI GEM PAMLICOlArVER PAM-2A BEAUFORT TAR-PAMLICO 900724 20 21354 29347 YES, OIN,CYA YES PAMILIDORIVER PAM-49 BEAUFORT TAR-PAMLICO 900724 27 3739 11412 YES, DIN,CYA YES Do PAMLICORfVER PAM-5C BEAUFORT TAR-PAMLICO 900724 36 13414 21225 YES. DIRCYA YES PAMLICORfVER PAM-7D BEAUFORT TAR-PAMLICO 900724 23 3414 24980 YES. DIN,CYA YES PAMLlO0RfVER PAM-10E BEAUFORT TAR-PAMLICO 900724 85 36260 25675 YES, DIRCYA YES PAMLIODRFVER PAMUOOIR ACRES BEAUFORT TAR-PAMLICO 900726 N/A FILRHODCOMPSCIPOGCNOOERULEUS CRAB KILL PLNWCREEK PUNGOCR-2 BEAUFCRT TAR-PAMLICO 900801 62 11405 14616 YES. DIN.CRY.CYA CRAB KILL PUNOOCREEK PUNGD CA-5 BEAUFORT TAR-PAMLICO 900801 28 2559 12985 YES, DIN,GRY,CYA CRAB KILL PUNGOCREEK PUNGOCR-8 BEAUFCRT TAR-PAMLICO 900801 27 2634 10248 YES, DIN,CRY,CYA CRAB KILL PUNGOCREEK PUNGOCR-9 BEAUFORT TAR-PAMLICO 900801 51 14505 12461 YES, DIN,CRY,CYA CRAB KILL PAMLICORIVER 02084519505 BEAUFORT TAR-PAMLICO 900802 a 1394 13844 YESXAN,CYADINCHR,BAC BROADCREEK BROADCREEK BEAUFORT TAR-PAMLICO 900815 N/A MACRO ALGAE-NITELLA SP. PAMLIOORFVER PAMLICO-5 BEAUFORT TAR-PAMLICO 900827 60 15517 47515 YES,DN,CYA,BAC CRAB KILL PAMLICOFIFVER PAMLICO-6 BEAUFORT TAR-PAMLICO 900827 32 4393 33278 YES.DIN,CYACRY CRAB KILL PAMLIODRIVER SUMMER-Al BEAUFORT TAR-PAMLICO, 900827 4766 30134 YESDIN,CRY.BAC.CYA CRAB KILL PLtWCREEK PUNGOi BEAUFORT TAR-PAMLICO 900829 31 2375 38780 YES,DIN,CYA,BAC YES GREENVILLE UTILITIES POND GREENVIUJE LIT PITT TAR-PAMLICO 901008 NIA FIL CYA-LYNG NANA, OSCI SP, CHL-CHLA SP PAMLICORIVER HERAING-A BEAUFORT TAR-PAMLICO, 901219 21 6057 2853 YES, DIN-OXY MAR NORTHESTCREEK @JACKSONVUE ONSLOW WHITE OAK 841105 ID, DINOFLAGELLATES APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUME DENSITY BLOOM FISH KILL? NEWRIVER WILSON BAY @ TAR ONSLOW WHITE OAK 85/8-10 YESCYCLOTELLACRYPTOPHYTES YES MOTTCREEK LANDING ONSLOW WHITE OAK 860731 11810 43322 YES, OLISTHODISCUS PINE KNOLL SH@ CANALS PINE KNOLL-1 CARTERET WHITE OAK 890331 1500 4675 12857 YES,DIAT0MS-t4AV, MELO MON PINE KNOLL SH. CANALS PINE KNOLL-1 CARTERET WHITE OAK 880401 4 590 2679 NO. DIATOMS, CRY, DINOPLAGELLATES PINE KNOLL SH. CANALS PINE KNOLL-i I CARTERET WHITE OAK 880401 NS 356 t584 ND PINE KNOLL SH. CANALS PINE KNOLL-2 CARTERET WHITE OAK 880401 3 367 1933 NO PINE KNOLL SH. CANALS PINE KNOLL-5 CARTERE t WHITE OAK 880401 1 240 792 NO PINE KNOLL SH. CANALS PINE KNOLL-9 CARTERET WHITE OAK 880401 1 200 745 NO HENDER90N POND HEND-1 ONSLOW WHITE OAK 880428 1 148 885 NO HENDERSON POND HEND-2 ONSLOW WHITE OAK 880428 1 1 101 941 NO BOGLE SOUNID BOGUE-1 CARTERET WHITE OAK 880609 820 41427 147610 YES. BL-GR - GOMP APO LITTLE NORTHEAST CREEK 0209317585 ONSLOW MITE OAK 880621 1 302 978 NO, SOME CHAYSOPH(TES LITTLE NE CREEK 0209317585 ONSLOW WHITE OAK 901002 44 1461 7570 YES. CHR-OCHR SP, BAC-MELOSIRA VAR ABBOTTS CR. @ SCUTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 840816 69 15901 80007 YES, BLUEIWEENS ABBOTTS OR. @ SOUTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 840926 2579 16595 YES, BLUE-GREENS CD TWIN OAKS FARM POND CAWRUS YADKtN-PEE DEE 850102 5224 4651 YESFISIH KILI-BLUE-GREENS YES MOUNTAIN CREEK STANLEY YADKIN-PEE DEE 850610 ID, HYDRODICTYON MATS UT. TO WALNUT BRANCH ROWAN YADKIN-PEE DEE 850626 0,81LUE-GREENS, GREENS. EWLENCPHYTES YES Ur TO WATSON CREEK UNION YADKIN-PEE DEE 850828 11125 5887 YES.GFIEENSALUE-GREENS YES ABIBOTTS CR. @ SOUTHMONT 0212160350 DAVIDSON YADKIMPEE DEE 850919 22 22663 164206 YES, BLUE-GREENS LASATER MILL POND LOWEREND FORSYTH YADKIN-PEE DEE 851003 14 908 1497 NO LASATER MILL POND UPPER END FORSYTH YADKfN-PEE DEE 05`1003 45 5456 5415 YES,ENRICHMENT SWEARING CREEK DAVIDSON YADKIN-PEE DEE 851010 1 182 8944 NO ABBOTTS CR. @ COTTON GROVE 02121602 DAVIDSON YADKIN-PEE DEE 851010 48 10792 44603 YES, 13LUE-GREENS AB801TS CR. @ COTTON GROVE 02121602 DAVIDSON YADKfN-PEE DEE 851015 100 11544 86121 YESGREENS,DIATCMS LJTJORCHAI@IDSONCREEK UNION YADKIN-PEE DEE 851022 400 24717 140332 YESBLUE-GAEENS YES LACEY BRANCH UNION YADKIN-PEE DEE 860414 15633 41226 YES, ENRICHMENT. CHRYSOPHYTES, CRYPTOPHYTES ABBO`TrS CA. @ SOUTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 860528 23 1965 12849 YES, BLUE'GREENS EVERETTS MILL POND RICHMOND YADKIN-PEE DEE 860616 14927 5825 YES, BLUE GREENS ABIBOTTS CR. @ SCUTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 860619 31 5413 17673 YES@ BLUE GREENS ABBOTTS CR. @ SOUTHMONT 0212`160350 DAVIDSON YADKIN-PEE DEE 860724 100 12509 90138 YES, BLUE GREENS ABBOTTS CR_ @ SOLITHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 860818 160 19652 163507 YES, BLUE GREENS SAM BENNET POND MECKLENBURG YADKIN-PEE DEE 860827 300 2896 11704 YES, HYDRODICTYON MATS@ CYCLOTELLA a. APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUME DENSITY KOM FISH KILL? GRANTSCREEK NR HIGH ROCK LAKE DAVID" YADKIN-PEE DEE 860827 1 169 1223 NZ) ABBOTTS CR. @ SOI.TTHMONT 0212160350 DAVIDSON YADKIWPEE DEE 860904 88 21085 110402 YES, 13LUE GREENS ABBOTTS CR. @ SOLTTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 861002 68 13074 106559 YES. 13LUE GREENS STRINGER POND FORSYTH YADKIWPEE DEE 861015 936 3952 NO, ELMLYNG YES TOWNCREEK 0212140080 ROWAN YADKIN-PEE DEE 861106 210 30611 190059 YES, DIATOMS LrrTOBEAVERCR UT TO BEAVER OR. IREDELL YADKIN-PEE DEE 870422 NO, FLINGLIS ABBOTTSCR.@SWtHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 870422 3 265 606 NZ) YES ABBOTTS OR. @ SOIJTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 070526 33 4827 22069 YES@OSCIGEM ABBOTTS CR. @ SafrHM0NT 0212160350 DAVIDSON YADKIN-PEE DEE 870624 29 5859 38955 YES, OSCI GEMANABS RAC ABBOTTS OR @COTTON GROVE 02121602 DAVIDSON YADKIN-PEE DEE 870720 66 14322 188312 YES, OSCI GEM ANABS ABBOTTS CR. @ SOIAW 0212160350 DAVIDSON YADKIN-PEE DEE 870720 29 8161 89440 YES, OSCI GEM ANABS HIGHROCKLAKE NA. 02112140080 ROWAN YADKIN-PEE DEE 870805 as 13074 31444 YES, FISH KILL CRYPTOPHYTES, ELIGLENOPHYTES YES TOWNCRIEEK 0212140080 ROWAN YADKIN-PEE DEE 870820 47 15256 92235 YES, OSCI GEMS. GREENS ABBGrrS OR. @ SaJTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 870825 57 12601 9`1536 YES,OSCIGEM.ANABS ABBOTTS CR. @ COTTON GROVE 02121602 DAVIDSON YADKIN-PEE DEE 870914 12 4073 15722 YESOSCI GERIETC ABBOTTS OR @ SWTHMONT 02121603SO DAVIDSON YADKIN-PEE DEE 870914 36 13776 158965 YES. OSCI GEM. ANABS ABBOTTS OR @ SOLTTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 871015 17 4733 .43089 YES, OSCI GEM. ANABS ABBOTTS CA. @ SOUTHMON'T 0212160350 DAVIDSON YADKI14-PEE DEE 871109 70 987 12170 YES.ANKI FAL SP, ETC TOWNCREEK 0212140080 ROWAN YADKIN-PEE DEE 871116 180 45519 204733 YES, DIATOMS ABBOTITS CA. @ SOUTHMOW 0212160350 DAVIDSON YADKIN-PEE DEE 871201 15 784 6376 N:) ABBOTTS OR. @ SOLITHMONT 0212160350 DAVIDSON YADKIWPEE DEE 880105 4 434 1234 w UTTOJACOBSCR. JAC09-1 STANLEY YADKIN-PEE DEE 880125 NS NOFUNGUIS ABBOTTS CR. @ SOIffHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 880202 7 375 1351 N:) ABBOTTS CR. @ SOIfrHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 880308 10 772 4049 N:) ABBOTTS CA. 0 SOUTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 880406 19 3664 17818 YES.DIATOMS, CHRYSOPHYTES, GREENS ABBOTTS OR. @ SOUTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 880518 51 1533 29522 YES,BL-GR - OSCI GEM. CRY ABBOTTS CREEK CD POUNDERS FORK HIGH ROCK-8 DAVIDSON YADKIN-PEE DEE 880621 76 12736 17338 YES, CRY, EUG, GREENS, DIATOMS ABBOTTS CA. @ COTTON GROVE 02121602 DAVIDSON YADKIN-PEE DEE 880621 120 25431 37907 YES.CRYPTOPHYTES ABBIOTTS CR. @ COTTON GROVE 02121602 DAVIDSON YADKIN-PEE DEE 880621 250 31584 43089 YES,CRY. EUG, GREENS, DIATOMS ABBOTTS CR. @ SOUTHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 880621 38 2537 30046 YES,I3L4GR ANIABS. ANAB, OSCI GEM LYNG ABBIDITS OR. @ COTTON GROVE 02121602 DAVIDSON YADKIN-PEE DEE 880714 3 876 3552 NO ABBOTTS CA. @ SOLITHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 880714 91 13115 15719 YES,BL-GR OSCI GEM,ANABS RAC ABBOTTS CR. @ COTTON GF40VE 02121602 DAVIDSON YADKIN-PEE DEE 8808,11 9 366 2795 N:) ABBOTTS OR @ SOMMONT 0212160350 DAVIDSON YADKIWPEE DEE 880811 89 2977 69525 YES.13L-GR 09CI GEMANABS RAC APPENDIX 2. ALGAL BLOOMS 1984-1990 STUDY STATION COUNTY RIVER BASIN DATE CHL-a BIOVOLUME DENSITY BLOOM FISH KILL? AMOTTS CA. @ COTTON GROVE 02121602 DAVIDSON YADKIN-PEE DEE 880915 24 3456 9782 NO AWCFrTS CA 0 SOMMOW 0212`160350 DAVIDSON YADKIN-PEE DEE 8809115 64 6374 71272 YESAL-GR OSCI GEM,ANAB SPI Anoom CA. @ COTTON GROVE 02121602 DAVIDSON YADKIN-PEE DEE 881010 3 884 2702 NO ABBOTTS OR @ SOUrHMONT 0212160350 DAVIDSON YADKIN-PEE DEE 881010 34 5961 62887 YES,BL@GROSCIGERWLOGRA moom OR @ SOUTHMONT 0212160350 DAVIDSON YADKI14-PEE DEE 881108 32 2SO 3843 YES,ANKICON,CHLLAVUL ABBOrrS OR @ SOUrHMONT 0212160350 DAVIDSON YADKIWPEE DEE 881205 4 390 3098 NO ABBOM CREEK 0212160350 DAVIDSON YADKIN-PEE DEE 890504 19 999 10446 YES, W, CRY T(NWICREEK 0212140080 ROINAN YADKIN-PEE DEE 890522 21 7606 25621 YES, CRY, W, CHL AR80rrS CREEK 02121602 DAVID90N YADKIN-PEE DEE 890607 75 4017 16595 YES, CRY, CHL ABBOTTS CREEK 0212160350 DAVIDSON YADKIN- PEE DEE 890607 33 6972 16013 YES,CYACHR RICHARDSON CREEK RICHARDSON UNION YADKIWPEE DEE 890612 13 N/A NIA FIL CHIL-ULOTHRIX ABOUTTS CREEK 02121602 DAVIDSON YADKIN-PEE DEE 890706 21 6743 60761 YES,CYACRY ABBOTTS CREEK 02112160350 DAVIDSON YAOKIWPEE DEE 890713 18 3652 38955 YES, CYA-OSCI GEM, ANIASS RAC, BAC MEYERSOOLFCOURSE MEYERSGOLFA MECKLI143JRG YADKIWPEE DEE 890718 7 395 2253 N/AFILAMENTOUSCHL WHAUSERCREEK SWELDS-1 DAVIE YAD)(XLPEE DEE 890719 35 11955 44021 YES. CYA VAJFORD POND WILIFORD-1 ROWAN YADKIWPEE DEE 890726 56 9918 7395 YES, ELIG ASHLEY POND ASHLEY-1 YADKIN YADKIN-PEE DEE 890731 NS 11772 19303 YES, EUG, CHL ABBOTTS CREEK 0212160350 DAVIDSON YADKIWPEE DEE 890803 40 3939 30483 YES, CYAOSCl GEM, ANABS RAC LAKE TOM-A-LEX YAD1600 DAVIDSON YADKIN-PEEDEE 8908t6 44 5062 163511 YES, CYACRY.EUGCHR, CHL LAKE TOM-A-LEX YAD161 I-A DAVIDSON YADKIN-PEE DEE 890816 20 13051 38897 YES, CYACRY,EUGXHR, CHL ABEIOTTS CREEK 02121602 DAVIDSON YADKIIIJ-PEE DEE 890913 25 9703 62535 YES, CHR, CYA, CHL ABBOrTS CREEK 0212180350 DAVIDSON YADKIN-PEE DEE 890913 52 9526 104113 YES, CYA-OSCI GEM. ANA13S RAC, BAC, CHL DUTCHMAN POND DUTCHMANA DAVIE YAOKIN-PEE DEE 900201 16 82 442 N:) HANES PONDS HANES-1 DAVIE YADKIWPEE DEE 900725 90 3265 20962 YES. CHL-ANKI FAL MI HANES PONDS HANES-2 DAVIE YADKIN-PEE DEE 900725 ill 2684 1922 NO. Rff ENRICHED APPENDIX 3. DESCRIPTION OF SEVERAL ALGAL CLASSES Cyanophyceae CYA - (blue-greens or cyanophytes) This most primative class of algae can be found anywhere other algae exists. They have evolved features that allow them to occupy more diverse habitats than any other group of plants. Some species are capable of forming surface blooms. The presence of phycobilin pigments phycocyanin (blue) and phycoerythrin (red) in varying amounts, chlorophyll-a, and carotene give the plants colors varying from green to blue-green, purple, red, yellow or brown. Chlorophyceae - CHL - (greens or chlorophytes) A large class of algae containing unicellular, colonial, and filamentous species. Pigmentation in most species is similar to that in higher plants. Starch contained within the cells turn dark blue-purple when stained with iodine. Cryptophyceae - CRY - (cryptophytes or cryptomonads) Most species unicellular and motile. Pigmentation is similar to that in the Dinophyceae. Occur commonly and may be abundant in the phytoplankton, especially during the cooler seasons. Xanthophyceae - XAN- (yellow-greens or xanthophytes) May have structures similar to those in the Chlorophyceae, but an absence of starch and the presence of leucosin help distinguish them. Motile cells have unequal flagella. Widespread but rarely abundant in N. C. Euglenophyceae - EUG - (euglenoids or euglenophytes) Most are motile and may produce powdery surface blooms especially in the presence of high concentrations of organic nutrients. Chrysophyceae - CHR - (golden, golden-browns or chrysophytes) Silica scales and spines are characteristic of some species. Many species grow well in cold water. Bacillariophyceae - BAC - (diatoms or bacillariophytes) Inhabit a wider variety of habitats'than any group other than the Cyanophyceae. Most abundant in cool seasons but are present year-round in rivers, streams, and lakes. 93 Dinophyceae - DIN - (dinoflagellates) Motile cells partly or completely encircled by transverse or' spiral groove. Two flagella with one in groove and one behind the cell, give a rotating forward motion. Yellowish-green to brown pigments in chloroplasts. Group responsible for toxic "Red Tides". Prymesiophyceae - PRY - (golden flagellates or prymesiophytes) Some members of this class have structure unique to group (haptonema) which has been described as as attached organelle. Some are capable of heterotrophic growth by saprophytic or phagotrophic means. Chlorornonadophyceae - CHM - (chloromonadophyte) A distinctive biflagellate with a swimming flagellum positioned forward and a trailing flagellum close to the cell. These cells contain a distinctive green color with a reservoir located at the anterior end of the cell. This algal class has been described by Smith (1950) as "an isolated group whose systematic position is uncertain". Rhodophyceae - RHO - (red algae) This class encompasses fresh .water and marine species. In color they range from grey, green, red and purple. Most genera reported from N.C. are macroscopic. 94 i I 14 - t . I f, Al I:j 110181111010 3 6668 14100 1869