ML19254C742

TMI Aquatic Study,Monthly Rept for Jul 1979

ML19254C742
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Site:	Crane
Issue date:	07/31/1979
From:	Nardacci G ICHTHYOLOGICAL ASSOCIATES, INC.
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ML19254C740	List: ML19254C739 ML19254C742
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-330 THREE MILE ISIJ.1;D AQUATIC STUDY Monthly Report for July 1979 by Ichthyological Associates, Inc.

P.O. Box 223, Ett ers, PA 17319 George A. I,'ardacci, Project Leader For Metropolitan Edison Co=pany o

Ichthyological Associates, Inc.

Ed.eard C. Raney, Ph.D., President 301 Forest Drive Ithaca, ::cw York 14850 1157 185 7010179

TABLE OF CONTE:frS Introduction. 1 acroinvertebrates; J. Folk, G. Hoover, R. Evans. 2 Ichthyoplankton; B. Lathrop, P. Ritson. 2 Trapnet; R. Malick, Jr. 3 Seine; R. Malick, Jr. 4 Irpingement of Fish; L. Wike. 6 Electrofishing; H. Hagerty. 7 Creel Survey; R. Ritota. 7 Achient Water Quality; G. Nardacci. 8 Thermal Plurae Mapping; L. Wike. 9 1157 086 i

TABLE OF TABLES Table Page 1 Sampling conducted in July 1979 near TMINS. 10 2 Fishes taken by trapnet on 9-11 July 1979 near IMINS. 11 3 Fishes taken by trapnet on 23-25 July 1979 near TMINS. '12 4 Fishes taken by seine on 10 July 1979 near TMINS. 13 5 Fishes taken by seide on 2f July 1979 near TMINS. 14 6 Fishes taken by seine on 20 June 1979 near TMINS. 15 7

Rmbers of fishes impinged at the Unit 1 Intake during a 24-hr impingement survey on 5-6 July 1979...

16 8 Se= mary of lengths, weights, breeding condition, and numbers of fishes impinged at the Unit 1 Intake on 5-6 July 1979. 16 9 Numbers of fishes Unit 1... 18-19 July 1979. 17 10 Su==ary.... Unit 1... 18-19 July 19 7 9. 17 11 Numbers of fishes Unit 2... 5-6 July 1979. 18 12 Summary.... Unit 2... 5-6 July 1979. 18 13 !Rmbers of fishes.... Unit 2... 18-19 July 1979... 19 14 Summary.... Unit 2... 18-19 July 1979..... 19 15 Nurbers of fishes captured by AC electrofisher near TMINS in July 1979. 20 16 Creel survey data from the GR for each survey day in July 1979. 22 17 Creel survey data from the West Dam for each survey day in July 1979. 23 1157 087

16 Creel survey data from the East Dam for each survey day in July 1979. 24 19 Creel survey data from the YHGS for each survey day in July 1979........ 25 20 Sumary of selected physicochemical parameters taken on 3 and 16 July 1979 near the TMINS. 26 21 Thermal plume tenperature data (C) taken at 0.5 m intervals surface (S) to bottom at 5 m, 20 m, and 40 m offshore, above and below the TMINS D'scharge, 13 July 1979. 27 iii 1157 188

INTRODUCTION The ecology of. York IIaven Pond near the Three Mile Island I'acicar Station (TMI!:S) has been under investigation since February 1974. Studies initiated in April 1974 include analysis of ambient trater quality, ichthyoplankton (far-field), ichthyoplankton entrainment, macroinvertebrates, fish population dynamics, inpingement of fishes, creel survey, and therral plume rapping. This report discusses the progress of investigations conducted I'n July 1979. 1157 089 1 w

Mv9 nUY9TE RATES Objective: To describe the diversity and distribution of the benthic macroinvertebrates occurring at the five benthos sampling stations near TMINS. Progress: Replicate (4) benthos sceples were taken on 3 and 16 July (Table 1). Enumeration and determination of dry weights of the macroinvertebrates have been completed through 16 July. Identification of specimens has been completed through 4 June. ICHTHYOPLA!,'KTON Objectives: (1) To determine the species corposition, abundance, and distribution of ichthyoplankton in York Haven Pond; and (2) To investigate ichthyoplankton entrained at TMINS Unit 1 Intake. Far-Field Progress: Day / night sa=ples were taken on 2-3, 11-12, 17-18, 24-25, and 30 July (Table 1). A total of 6,254 larval and young fish was captured; 4,345 (697.) at night and 1,909 (317.) during the day. The pumpkinseed/ bluegill comprised al=ost half (3,064 specimens) of the total catch and was taken only at two stations (14B1 and 4A1). Zooplankton pulses were also observed at 1431 and 4A1. k'ater temperature in York Haven Pond was Icuest on 2-3 July (21.2 - 23.2 C) and peaked at 26.1 to 30.1 C on 17-18 July. Tempera-tures during the subsequent two weeks dropped slightly (23.8 - 27.8 C). Identifications are co=plete through 30 May. I157 190

Fnt-afa-a9t Progress: Ichthyoplankton entraimnent surveys uere co ';cted at Units 1 and 2 on 11-12 and 24-25 July (Table 1). At Unit 1, 118 ichthyoplankters (81 surface, 37 oblique) were tat. n on 11-12 July. The 24-25 July collection yielded 129 specimens (87 surface, 42 oblique). At Unit 2, 4 ichthyopla.nkters (2 surface, 2 oblique) were taken on 11-12 July. Thirteen specimens (5 surface, 8 oblique) were taken on. 24-25 July. TRAPNET Objectives: (1) To determine the distribution and relative abundance of fishes in the Three Mile Island area vulnerable to trapnet; (2) To monitor the occurrence of diseased fishes; (3) To provide specimens for radiation analysis; and (4) To determine reproductive status for fishes throughout the year. Progress: Samples were taken on 9-11 and 23-25 July (Table 1). A total of'73 fish of nine species was taken en 9-11 July (Table 2). Most fish (36) were recorded at Station lA3, most species (5) at stations 11A2 and 11A3, and greatest biomass (1.57 kg) at Station 9B3. The pumpkinseed (57.57. of the total catch), rock bass (15.17.), and black crappie (11.07.) were most numerous. Ripe male and gravid and ripe female pumpkinseed were common. One channel catfish and eight rock bass were sacrificed for radiation analysis. No fish were taken in the 10-11 July collection at Station llA3. 1157 191 4 ~% ..-.m. e = = - - - e

Fif ty-nine firh of 12 spoef es.cre trka 'n 12 'S ' 1;- /T.'ble 3). Most fish (20) cccurred at Station 11A3, nost species (6) a: stations 11A2 and 932, and greatest biomass (6.21 kg) at Station 932. The purpkinseed was again cost numerous and comprised 47.57. of the total catch. Ripe male pumpkinseed rc=ained common. Two ripe male golden shiner were taken at Station 11A2. Two channel catfish and one rock bass were sacrificed for radiaticn analysis. An incompletc set occurred at Station 982 as the cet was discovered missing on 24 July. A replacement net was set and fished on 24-25 July. Dead fishes observed 4.n July included the carp (3 specinans), shorthead redhorse (2), channel catfish (11), rock bass (1), and smallmouth bass (1). Most specimens were located in control areas upstream from the Discharge. SEINE Objectives: '(1) To determine the species composition of fish upstream and downstream from the TMENS Discharge vulnerable to seine; (2) To determine the relative condition factor for important species; and (3) To determine the reproductive status for fishes throughcut the year. Progress: Collections were made at the 10 stations on 10 and 25 July (Table 1). A total of 2,655 fish of 21 species was taken on 10 July (Table 4). Most fish (1,078) and greatest biomass (0.28 kg) occurred at Station 9B3 while most species (10) were found at stations 1A2 and 4A2. The spottail shiner and tesse11ated darter were abundant i157 192

3 and ec prised 65.77, and 34.57. of the total entch, recpactively. Ovar 767. of the spottail shiner were taken at Station 933. Female spotfin shiner larger than 55 mm FL appeared sIlghtly gravid. One spotfin shiner had a mouth deformity but appear-d in fair condition. Four spotfin shiner,1 fa11 fish, and I white suc cer were parasitized by anchor worms. Three spotfin shiner and one fa11 fish exhibited slight black spot infections. Three tesse11ated darter were parasitized by Iceches. No pattern of parasite infection was observed with respect to the 10-ation of TMINS. Sampling on 25 July yielded 999 fish of 16 species (Table 5). Most fish (362) were taken at Station 1035 while most species (9) and greatest biocass (0.22 kg) occurred at Station 13B5. The spotfin shiner and spottail shiner were most abundant and comprised 37.77. and 19.8% of the total catch, respectively. Over 967. of the spottail shiner were found at Station 13B5 while over 677. of the spotfin shiner occurred at Station 10B5. Fifty spocfin shiner, 2 bluntnose minnow, and 9 fa11 fish exhibited slight black spot infections. One specicen each of the spotfin shiner, Lecomis spp., and smallmouth bass was parasitized by anchor worms. Protozoan infections were observed on one bluntnose minnow. No pattern of parasite infection was observed with respect to the location of TMINS. Analysis of collections made on 20 June has now been completed; a total of 9,390 fish of 28 species was taken (Table 6). The spottail shiner uas most abundant and comprised 59.17. of the total catch; most I157 193

were young. The tesse11ated darter (14.17.), uhite sucker (8.97.), fa11 fish (8.57.), and spotfin shiner (5.87.) were also cenmon. A young muskellunge was taken at Station 10B5 and may have resulted from natural reproduction as the Pennsylvania Fish Ccamission has no records of recent stockings. One golden shiner, 1 common shiner, and 26 spotfin shiner exhibited slight black spot infections. One spotfin shiner had a slight jaw deformity. Three spotfin shiner were para-sitized by anchor worms and one rock bass by a J eech. No pattern of parasite infection was observed with respect to the location of TM13S. D*PTMGEFENT OF FISH Objectives: (1) To determine the numbers and species impinged on the river water intake screens; (2) To determine day-night differences in impingement frequency; and (3) To determine the extent of mortality of impinged fish. Progress: I=pingement surveys were conducted on 5-6 and 18-19 July at TMINS Unit 1 and 2 Intakes (Table 1). Unit 1 impinged 13 fish of 5 species weighing 16.4 g (Tables 7 through 10). vorng fish accounted for 11 of the 13 specimens, the remainder were juvenile. Eleven fish were dead. Two fish were taken on 5-6 July and 11 on 18-19 July. The estimated impingenent for July from Unit 1 was 201.5 fish weighing 254.2 g (0.6 lb). Imp ingement :urveys at Unit 2 were incomplete due to continuing d'if ficulties with the screen wash pu=ps which prevented the screens from being washed more than 3 minutes every 8 hours. Unit 2 impinged 1157 194 =, eum -*w.. -..---.w

16 fish of 3 species reighing 9.4 g (Tables 11 through 14). All fish taken were young and dead. The estinated inpingement for' July from Unit 2 was 248 fish weighing 145.7 g (0.3 lb). The totat estimated impingement for TMINS Units 1 and 2 in July

• as 449.5 fish ucighing 399.9 g (0.9 lb).

h P00 0 I\\L6 ELECTRO F TSliTNG Objectives: (1) To provide specimens for radiation analysis; and (2) To determine the relative abundance of fishes vulnerable to electroff shing in various parts of York Haven Pond. Progress: Sampling uas conducted on 5, 9,16. and 17 July (Table 1). Twenty-four collections in 12 zones yielded 431 specimens of 15 species (Table 15). The quillb (131 specimens), smallmouth bass (76), rock bass (49), and carp ( were most abundant. A total of 6 channei catfish,11 rock bass, and 15 smallmouth bass was taken for radiation analysis. CREEL SURVEX B Objectives: (1) To determine the extent and success of sport fishing; and (2) To determine infc uation on angler residence and use of catch. Progress: Creel surveys were conducted in all areas on 1, 21, 26, and 30 July (Table 1). Boat motor failure resulted in an incomplete survey on 1 July. The 346 anglers intervieued fished 544.35 hours and caught 603 fish (Tables 16 through 19). The actual harvest was 211 fish or 35.0% of the total catch. The =can catch per effort (c/e) was 1.11. I157 195

3 J Most sn:1ers (160), cost hmrs fished (246.30), and M hest actimi harvest (106 fish) were recorded at York Haven Generating Station. The largest total catch (300 fish) occurred in the Ce.;eral Reservoir. The highest mean c/e (2.36) was recorded at tb: West Dam. Smallmouth bass (270 specimens) were caught in greatest numbers. Other common species included the channel catfish (160), rock bass (78), carp (36), unidentified sunfishes (20), and walleye (16). Approximately 82.07. of the anglers interviewed lived in York or Dauphin counties. Most of the anglers reported they eat some of their catch. AMEIENT. 'ATER OUALITY Objective: To determine concentrations of selected water quality parameters in ambient river areas and the TMINS effluent. Progress: Water quality samples were collected on 3 and 16 July at the five river stations (Table 1). Data were analyzed and tabulated; results are presented in Table 20. On 3 July values for alkalinity and total and dissolved zine were highest at Station 1A2; sulfate and total dissolved solids were highest at lAl (upstream of the TMINS Discharge). Dissolved oxygen and total orfer values were highest at Station 9Bl; turbidity and dissolved copper were highest at llA2 (downstream of the Discharge). On 16 July values for sulfate and total dissolved solids were highest at Station IAl; alkalinity and dissolved copper were highest at lA2. Values for water temperature and dissolved zine were hightst at 1157 096

9 St'tfen 931. T :rbidity end pH v,1ues ere h!;hast at stations 11 A2.nnd 11A1, respectively. Para eters, for which state water quality criteria have been established, were not exceeded at any station in July. T!EPJ'AL PLUFE MAPPING Objectives: (1) To determine temperature data; (2) Tc define the discharge plume; and (3) To check the accuracy of the analytical plume model. Progress: Thermal plume mapping was conducted on 13 July (Table 1) in conformance with the requirement that a plume map be done when river flow declines to less than 10,000 cfs (283.2 m3/s). During the 13 July capping river flo.i was 8,400 cfs (237.6 m3/s); maximum AT at the Discharge was -1.5 C (Table 21). Maxinum river water temperature was 29.0 C recorded at the surface 5 m offshore 800 r downstream from the Discharge. Plume map data complied with all app'acable criteria. l h 1157 197

t Table 1 Sampling conducted in July 1979,near U1 INS. Jul Jul Jul Jul Jul l'ROGRAM l-7 8-14 15-21 22-28 29-31 Macroinvertebrates X X Ichthyoplankton: Far-Field X X X X x j Entrainment X X Trapnet X X Seine X X Impingement of Fish X X E Electrofishing X X X l Creel Survey X X X X Aiubient Water Quality X X Thermal Plume Mapping X i w M N Q W O i 1 i

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• J

= s e. = e e z >s..m.sa e.g e e-.s e e esi w = e.w

---

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Table 7 i Numbers of fishes impinged at the Unit 1 Intake during a 24-hr impingement survey on 5-6 July 1979. Date 5 6 6 Tizac 2000 0400 1200 Volumetric Flow Rate (m3/3) 1,71 1,71 1,71 Number of River Water Pumps: Nuclear Service 2 2 2 Secondary Service 1 1 1 Decay 1[ cat 1 1 1 Intake Velocity (cm/s) -7 -7 -7 River Flow (:J/s) Air Temp. (C) 382.3 387.9 379.4 17.5 13.0 21.5 Water Temp. (C) 20.0 19.5 19.5 Total Condition of Fish . Alive Dead Alive Dead Alive Dead Alive Dea.' Margined madtom 1 1 Tesse11ated darter 1 1 Total 1 1 1 1 o P Table 8 Summary of lengths, weights, breeding condition, and numbers of fishes impinged at the Unit 1 Intake on 5-6 July 1979. Species Fork Length Range Reproductive Status Total Weight Total Nuuber (5 mm groups) (n) Margined madtom 91-95 1 Juvenile 5.6 Tessellated darter 31-35 1 Young 0.4 Total 6.0 2 J -- J 2=>

Table 9 Numbers of fishes irupinged at the Unit 1 Intake during a 24-hr impingement survey on 18-19 July 1979. Date 18 19 19 Time 2000 0400 1200 Volumetric Flow Rate (m3/s) 1.33 1.71 1.33 Number of River Water hamps: Nuclear Service 1 2 1 Secondary Service 1 1 1 Decay lleat 1 1 1 Intake velocity (cm/s) -15 -15 -15 3 River Flow (m /s) 450.2 339.8 372.4 Air Temp. (C) 27.5 20.0 30.0 Water Temp. (C) 27.5 26.0 27.0 Total Condition of Fish Al ive Dead Alive Dead Alive Dead Alive liend Spottail shiner 1 1 2 Channel catfish 1 1 S 1 6 Tessellated darter 1 1 Walleye 1 1 Total 1 3 1 6 1 10 t' Table 10 s I Sununary of lengths, weights, breeding condition, and numbers of fishes impinged at the Unit 1 Intake ou 11.-19 July 1979. Species Fork Length Range Reproductive Status Total Weight Total Nm.aer (5 nn nroups) (c) Spotta11 shiner 26-30, 36-40 2 Young 0.9 Channel catfish 26-40 7 Young 2.4 7 Tessellated darter 36-40 1 Young 0.4 i Halleye 86-90 1 Juvenile 6.7 7 Total 10.4 l' s N l C' ^

Table 11 Numbers of fishes impinged at the Unit 2* Intake during a 24-hr impingement survey on 5-6 July 1979, ice 5 6 6 ~ Time 2000 0400 1200 Volumetric Flow Rate (in3/s) 2.66 2.66 2.66 Number of River Water Pumps: Muclear Service 2 2 2 Secondary Service 1 1 1 Intake Velocity (cm/s)- -14 -14 -14 River Flow (m3/s) 382.3 387.9 379.4 Air Temp. (C) 17.5 13.0 21.5 Water Temp. (C) 20.0 19.5 19.5 Total Condit ton of Fish Alive Dead Alive Dead A l i've Dead Alive 1,c a d Spottail shiner 7 1 11 Tessellated darter 1 ? 3 Total 1 7 3 11

• Incomplete survey - screens washed 3 minutes only due to difficulties with screen wash pumps.

I Table 12 Sununary of lengths, weights, breeding condition, and numbers of fishes impinged at the Unit 2 Intake on 5-6 July 1979. i { Species Fork Length Range Reproductive Status Total Weight Total Nuaiber (5 mm nroups) (n) Spottail shiner 21-35 8 Young 2.0 1; Tessellated darter 11-20 26-30 3 Younn O.4 Total ~ 2.4 F. 3 l i

Table 13 Nunbers of fishes impinged at the Unit 2* Intake during a 24-hr impindement survey on 18-19 July 1979. Date 18 19 19 Time 2000 0400 1200 3 volumetric Flow Rate (m /s) 2.66 2.66 2.66 Number of River 11ater Pumps: Nuclear Service 2 2 2 Secondary Service 1 1 1 Intake Velocity (cm/s) -8 -8 -8 River Flow (m3/s) 450.2 339.8 372.4 Air Temp. (C) 27.5 20.0 30.0 11ater Temp. (C) 27.5 26.0 27.0 Total , Condition of Fish Alive Dead Alive Dead Alive Dead Alive Dead Spottall shiner 1 1 Smallmouth bass 1 1 2 Ter.sellated darter 1 1 2 Total 3 2 5

• Incomplete survey - screens washed 3 to 5 minutes only due to dif ficulties with screen wash pumps.

If f Table 14 Summary of lengths, weights, breeding condition, and numbers of fishes impinged at the Unit 2 Intake on 16-19 July 1979. Species Fork Length Range Reproductive Status Total lleight Total Nun E (5 nun nroups) (n) Spottall shiner 31-35 1 Young 0.4 i Smallmouth bass 46-50, 61-65 2' Young 5.6 Tessellated darter 26-30, 36-40 2 Younn 1.0 ~ Total 7.0 2 N

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w = = - ++e - e ees e ed ea e e e e e444 N Necem no m men mm oSQ9eem40 MOO a 4%Gm + * * -ede e e e e e eM e N o me e eeO4 m m Necem me men om Nem =m -m9mm - + e

• Neo

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• ocO

-me e e e e e e edee4m amed a. m m meDen Ne m men mmm ew M We -e 2 m a a m a =. w e s a 9 M M s s e1 w v e. e a ln e a e. _ e. a. g M A v. w. en~ m a o.o w sw -n.

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= -u m w =. .s 44 -e s a-a o = v = w v w w a m JJ s= e m.. avsw., - s y e s e. s .s..

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_c _., s._i___.. .m u _2 a N _. u, _ W . =. 2_ nmm s zaT. n.-..._. ..m_ m_ s m. - d g. c. -.-so.3 N o r 6 4 a m e w w > % w w a 5 e v e m. p e w a e w. x3;~ H a 1157 108

ok e e M MmmMeComh esen- -s e e 4 M m4MM h e- *= e w d 4 9 P m e p e h O c. G h. O p e e ammW e mme 4 eee ed e e e eM e e e e 44 e O 4##94 mh d N GQ NN m n 3 0 @ O. O d e. c e MC e. es e M ce e e e4 g es eh e e e-T4 4iMm - = e O M hhh EM mh m whN NN m d m,,8. c. G.e. N. e e c e 4 e W N 1 4 m hmh e eM eM e~e e e e M M M @ hhGM mh m N mhm NN d

• SO40e9MOdOO eMMM -

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• N49 e t ed one4M e see e e a Oc e

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• h

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• e w

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b tw 3 AA=2 a sw -O u u a wa en su

==ww

• e a

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ww eu n wa um n mw< e o uwu o see ' Lemw =f24 GL m hW wep - e e9 e h e "Wm ww

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W W m Q $ $w W W e = = o e e e, w M. W dgm oe oe- -m 4eed420 asswa = sww>4 heanuma 1157 109 e l e - - - - - =. - - - - -. -.. ~.. _. -.

Ii 1 i t i Tabic 16 Creet ourwey data f ram the CR for each survey day la July 1979. Day 1 Sun 21 Sat 26 the 30 Mon beather Partly Cloudy

overcast, Overcast, Light Rain, Overcast.

Light Aale, Rana Partly ClouJy Fartly Cloudy River Stage (a) 1,1) 1 09 1,gn 1 19 Air Teeperature (r.) 22.5 27.0 NA 21.5 21.5 25.5 24.5 27.5 27.5 23.5 25.0 25.5 i Walet_Iemperatute (C) 23.0 24.0 NA 25 3 25 3 25 3 26 3 26 5 27.0 24.0 24 3 25 5 T Lee s : a) morning (0900-1300) a a e a b) afternoon (1300-1700) b b b b __.c L eye n1.yt (1700-2100) c c c c igt Total Fer Time Feriod: Ansters 16 33 13 16 11 13 8 13 11 4 138 rieh Caught 18 44 5 15 61 38 47 8 23 37 9 300 Fish Kept 8 21 4 10 2 12 3 9 12 1 86 l nours Fished 28.60 38.50 2 25.25 27.50 18.65 29.85 9.15 19.50 16.90 15.50 229.4u __qa tshf E t[ott (h) 0.63 1.14_ 0.59 2 22 2.04 1 17 0.87 1.18 2.20 0,} 8 1.3t Day Totale: Anglers 49 40 21 2F p, Fish caught 62 114 55 69 p3 f Fish Kept 29 20 15 22 t ILoure Fished 67.10 71.40 39.00 31.90 Cats h/111ggg_fh) 0.93 1 10 1.41 1.31 } p eS j e s. a b c a b c a b c a b c Total Fallfish LK IK = 1 Channel cat fish IK 10K 2K IK TR 3R 2K 1R IK IK IK 2R 19K 1)R 32 pac k base 3K ZR 7K 3R N0 IK ZR 9R 3R 3K SR 1R IK 3R 2K 2R 17K 3DR 47 Redbreast sunfish IK IK IR 1R 11 3K 2R 5 Bluer.!!! IK IK 1 Sunftsbes (Ley 2eig opp.)I 1R SUR VEY 1R BR 2K 1R 1R 2R 2R 11R 11 5sallmouth base 3K BR 4K 19R 4L 4R 9K 33R 2K 27R 6K 27R 3K 3R 6K 11R SK 23R 2R 45K 157R 202 Walleve IR IR l & Ceneral identification. R Released. E Kept. NA Not Ave 11able. M N -a i '-F we

=.

• 9 ee e. es s.e @

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Table 18 1 Creel survey data (som the East Dam for each survey day In July 1979. Day I Sua 21 Sat 26 thu 30 no. I Weather Fortly ClowJy Ove rc a s t. Festly Cloudy. Overcast. Clear Overcast Partly Clou ly, Cleae i River Stage (a) 1 15 I;19 1 10 l 19 4 i Air Tteveratute (C) 20.5 27.5 NA 24.0 21.5 26.5 26.5 25.5 2s.5 22.0 29.0 26.5 j Water Temperet'ere (c ) 25.0 29 5 ta 28 3 23 5 25 5 27.5 27 5 28 0 23 5 26 5 _ 16.0 m Tlaw a : a) suening (09t4-1300) e a e e ) aftesnoon (1300-1700, b b b t Total Per ilma Feriod: c , b c ) evenindt jyl-{ LOO) e c c TW A L Anglers 7 fe 3 3 3 9 3 28 Fish Caught S h 4 7 15 2 1 37 Fish Nept w 2 1 i Hours Fished 12.15 o 2.50 3.00 6.75 12.00 ) 0.50 __fetshfttfort (h) 0 61 36.90 1.60 2.33 2.22 0 17 2.00 t,po a e Day Totale Angler s 7 9 9 3 Fish Caught 8 26 2 1 ? Floh sept 2 1 l hours Fished 12.15 12.25 12.00 0.50 _.Catt fl{ fort th) 0 66 2 12 0.17 2 00 h Epecies a b c a b c a b c a b c Totit C a rp IR gg g a Yellow butil.eal IR gg g Ch4mnel cat fish 2R NO 2K 1R in 2R 'E 6 Roc k base 3R la 3R ra 7 Boykin eeJ IR gg g Bluegill la gg g Sien f t slie s (Lee"ali erf.)I 3R suRvry 3g 3 5mellsenath bass IR 3R ROR la la 3R 15R 16 t 3 It lay _P*LG1 JE IR I I General ident ificat ion. R Released. R Fept. NA Not Avallable, s M N _-_= a_ 4

Table 19 Cseet survey date f rom the Yl0S for each survey day in July 1979. Dey 1 Sun 21 Set 26 Thu 30 Mon We.cher Partly ClouJy Ove rc a s t.

Dwercast, Fartly Cloudy, Festly Cloudy Fartly Cloudy Clear River Stage (m) 1.15 I G9 4.10 1; L9 n

Air Temperature (C) 27.0 27.0 21.5 23.5 27.0 24.5 26.5 27.5 29.5 24.5 28.5 28.5 War e t_Iepmc r o tuf e (c ) 23 5 23 5 22.5 24 5 25 5 25 5 26 0 27.0 27.0 24 0 25.0 25.5 T Lee s ; a) mornin6 (0900-1300) a a a e l b) af teri=>on (1300-1700) b b b b 4 $1.even{!v* fl7M1.JJ00) e e e c TOTAL Total rer Time FertoJ Anglers 20 22 43 3 7 22 13 4 8 6

• 9 3

160 Fish Caught 41 33 1. 6 6 45 7 3 19 4 12 3 191 Fish Fept 30 17 9 4 5 30 1 3 2 3 104 Ikwure Fished 40.50 37.10 5 7.75 7.50 5.85 41.50 16.00 4.50 9.50 9.00 16.00 1.10 246.30 Cat e.i [F(for t Dil 1.01 0.89 0.21 0.89 1.03 1.08 0.44 0.67 2.00 0.44 0.75 2.73 0.78 Day Totals: Anglerg 85 32 25 18 Fish Caught 86 57 29 19 (p y i Fish Kept 56 39 6 5 lburs rished 135.35 54.85 30.D0 26.10 _ gt.stdgfo r t M 0.64 1.04 OE 0.73 hpecteg _g. b c a b 1 a b c e _h c _ Jo t.n l Carp et IR SK 1R 4K 6R JK in 20K 13d 3) Lockess (Ca tus t omid s)I 2R 2R 2 Clannel catfish 6K 4R 4K 6R 7K 2R 2K SK 21K 2R 2a LR 2K TR 2K 2K SlK 24a 75 Catfighes (1tia(EDt2 *PP-)I IR IR I Roc k beg, 6K SK TR IK IK 2R 13K 9R 22 a nedhreast sunfish IK IK 1 i aluegill 1K IK 1 [ Sunfishes (Lepqmjg opp.)1 = = 1R IR 3R 1R en 6 Sma lle=>ut h b4se 5K 3R 3K 2R - 81 IK 6R IK 2R bt IK 1R 2R 12K 2 ?R 34 White crapple 2K - 4 2K 4K 4 aleck crapple 2K 2K 2 yellow perch tu LR L i W4] { eys,_ IK 2R IR IK IR 2R 1R 2_K TR "9 } 1 General (J ent i f ic a t ion. R Released. { K Kept. I s N wA e w w i ,._..,n.

t 9 ~~eom

• ~*~o eN..

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t e ..... 7 e Ther-al plure tegerature data (C) tGen at 0.5 m intervata surface (5) to tottom at 5 m, 20 m, and 40 m off=5sre, skove and telow the T C $ Ofectarge, 13. hly 1979. Air Te7. (C): M

ew Faint (C): M Wind Greed (ip5): !;A Wind Direction: M ei er ri ev r.Jr.).

2P.6 e!ver r!cstfe9 r-i- %6 Start Tinish Start Finish TL a: 1220 1630 Secondary Service ib7s: Itstics "reration '.evel (%): Unit 1 1 1 Unit 1 0 0 Unit 2 1 1 Unit 2 0 0 recay Heat 2% ps: Nelear service l% ps: t'rit 1 1 1 3 Unit 1 2 2 Ef f tvent Rate (m /s): 2.5 2.6 Unit 2 2 2 Intake Te7 (C): 27.4 29.2 efflac't Te7. (Cir 27.2 28 9 Distance Tro's Three File Island Shore Distance Trom Th. e P:lle Ieland Shore 40 m 20 m 5a 40 m 20 m 5m tepth repth 27.8 27.3 27.0 5 Unit 1 Intake 26.9 26.9 26.9 5 200 m Dowstress of D 27.8 27.3 27.0 0.5 26.9 26.9 26.9 0.5 27.8 27.3 27.0 1.0 26.9 26.9 1.0 27.7 27.3 27.0 1.5 26.9 26.9 1.5 27.3 2.0 26.9 26.9 26.9 5 300 m :oe stream of D 27.6 27.1 27.7 5 25 m U; stream of 26.9 26.9 26.9 0.5 27.6 27.1 27.6 0.5 techarge 26.9 26.9 1.0 27.5 27.0 1.0 26.9 26.9 1.5 27.5 1.5 26.9 2.0 27.5 2.0 26.9 26.9 26.9 5 400 m Omstreas of D 27.6 26.7 26.2 5 DiscFarge (D) 26.9 26.9 26.9 0.5 27.5 26.8 26.3 0.5 26.9 26.9 1.0 27.3 26.8 26.4 1.0 tepth at Discharge 26.9 26.9 1.5 27.1 1.5 Fire = 1.5 a 26.9 2.0 26.9 2.5 26.7 26.9 27.5 5 25 m Downstreas of D 26.7 28.8 27.5 0.5 27.4 27.4 29.0 800 m oestream of D 26.7 25.8 1.0 27.4 27.4 28.9 0.5 26.7 1.5 27.4 27.4 1.0 27.4 27.2 1.5 26.8 26.8 27.0 5 5C s h mstream of D 27.4 2.0 26.8 26.5 47.0 0.5 26.8 26.8 1.0 27.4 27.4 27.4 5 1000 m Omstrea:s of D 26.7 26.8 1.5 27.4 27.4 27.4 0.5 27.4 27.4 1.0 26.9 26.8 27.2 5 75 m revnstream of D 27.4 27.4 1.5 26.8 26.8 27.2 0.5 27.4 2.0 26.7 26.8 1.0 26.7 26.7 1.5 27.8 28.3 25.3 5 1900 m Jevnstream of D 27.4 27.6 28.3 0.5 26.9 26.9 27.0 5 100 m Oownstream of D 27.3 27.3 27.9 1.0 26.9 26.8 27.0 0.5 27.2 27.2 1.5 26.9 26.8 1.0 27.2 27.1 2.0 26.9 26.8 1.5 26.9 26.9 26.9 5 125 m Downstrea:s of D 26.9 26.9 26.9 0.5 26.9 26.9 26.9 1.0 26.9 26.9 1.5 26.9 26.9 26.9 5 150 m roastream of D 26.9 26.9 26.9 0.5 26.9 26.9 1.0 ( k ]l}l%g/ 26.9 1.5 P% 1157 1 b- -. _..}}