ML19341B196

Savannah River Fish Population Study & Impingement Prediction for Plant Vogtle,Burke County,Ga, Sept 1977- Dec 1978

ML19341B196
Person / Time
Site:	Vogtle
Issue date:	01/31/1981
From:	Wiltz J GEORGIA POWER CO.
To:
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ML19341B177	List: ML19341B176 ML19341B196
References
NUDOCS 8101300429
Download: ML19341B196 (34)

Text

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! Savannah River Fish Population Study and Impiegement Prediction for Plant Vogtle, Burke County, Georgia I

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{ Georgia Power Company. r Environmental Affairs Center  !

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J. Wayne Wiltz, Principal Investigator i

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i January,'1981' ,

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Table of Contents M

1. Su::::nry and Conclusions v

2. Introduction 1

3. Materials and Methods 2

4. Results and Discussion 5

5. Lite ature cited 10 9

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List Of Figures Page

1. Station location for the population study in the Savannah River Adult Fish Study. 3 m

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List Of Tables P_ age,

1. Family, scientific and comon names, of fishes collected in the Savannah River Adult Fish Study. 11

2. Species of fish end number of individuals collected ,

in September,1977, in the Savannah River Adult Fish Study. 13

3. Species of fish and number of individuals collected in December, 1977, in the Savannah River Adult Fish Study. 14

4. Species of fish and number of individuals collected in April,1978, in the Savannah River Adult Fish Study. 15

5. Species of fish and number of individuals collected in June, 1978, in the Savannah River Adult Fish Study. 16

6. Species of fish and number of individuals collected in August, 1978, in the Savannah River Adult Fish Study. 17

7. Species of fish and number of individuals collected in October, 1978, in the Savannah River Adult Fish Study. 18

8. Species of fish and number of individuals collected in December,1978, in the Savannah River Adult Fish Study. 19

9. Species of fish and number of individuals collected for each month in the Savannah River Adult Fish Study. 20

10. Percent composition of each family of fishes collected in the Savannah River Adult Fish Study. 21

11. Percent composition of game and commercial and non-game and non-commercial species collected in the Savannah River Adult Fish Study. 22

12. Mean lengths in millimeters with the range in- paren-thesis for each species for the Savannah River Adult Fish Study. . 23 iii

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List Of Tables 4

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13. Biomass of game and coasmarcial species for the Savannah River Adult Fish Study.

27 t 14. - Biomass of.non-game and non-conenercial species for 4 the Savannah River Adult Fish Study. 28 4

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Summary and Conclusions Fish will be impinged at the proposed electric generating plant, but predictions are that the number of individuals impinged will be low and that no single species will dominate the impinge-ment sample. Factors which will contribute to low fish impingement are (1) a single intake structure, (2) low intake velocities, and (3) a short intake canal reducing the amount of available area for the population of certain species to develop.

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INTRODUCTION In accordance with the Plant Vogtle Final Environmental Statement issued by the United States Atomic Energy Commission (1974), now the Nuclear Regulatory Commission (NRC), a biological study was conducted in the Savannah River by Georgia Power Company. An adult fish popu-lation study was conducted to determine what species are present in the vicinity of the plant site. The purpose was to predict the envi-ronmental impact of the intalo canal and intake structure on the adult population of resident and anadromous fish in the Savannah River.

Construction of Plant Vogtle began in June, 1974, and was discontinued in Septesser, 1974, as a result of unfavorable economic conditions. Construction resumed in January of 1977 with excavation activities beginning in February. The plant site is approximately 1282.4 hectares (3,169 acres) and located in Burke County on the south-west side of the Savannah River. The site is at river kilometer (km) 242.8 (river mile 150.9) across from the Savannah River Plant (SRP) operated by E. I. DuPont DeNemours and Cor.pany for the U.S. Department of Energy. The plant site is approximately 41.8 km (26 miles) south-southeast of Augusta, Georgia. The site is located in the Coastal Plains, which is characterized by sandy or sandy loam soil with rolling hills and mixed pine-hardwood ass >ciation. In Georgia, the Savannah River Basin encompasses approximately 15,076.4 square km (5,821 square miles), (Environmental Protection Division, 1974).

The original plans proposed a generating plant consisting of four units, but construction of two units has been canceled. Unit 1 is 1

scheduled to go into service in November, 1984, with the date for Unit 2 not yet finalized. Each unit will have a generating capacity of 1,160 megawatts.

The study will be discussed and, when possible, supplemented with data from studies done at the Savannah River Plant for ; National Pollu-tion Discharge Elimination System 316(b) demonstration (McFarlane et al.,

D78) .

MATERIALS AND METHODS Five sampling stations were selected, approximately 100 m in length, which closely resembled the physical conditions of the proposed intake .

site. Stations I and II are located downstream from the proposed intake site (Station III), and Stations IV and V are located upstream (Figure 1). A description of each sampling station is given as follows:

Station I Located at river km 240.9 (river mile 249.7) approximately 1.9 km (1.2 miles) downstream from the proposed site of the intake structure. The station consists of sand bars, fallen trees, submerged tree stumps, and spurdikes. Spur-dikes are pilings placed in the river by the U.S. Army Corps of Engineers to control the meandering of the river channel.

Station II Iocated at river km 241.9 (river mile 150.3) approximately 1 km (.6 miles) downstream from the proposed intake struc-ture. The station consists of scattered overhanging tree limbs and submerged logs with very little additional cover for fish.

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SOUTH CAROLINA

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STATION IV u STATION III STATION II STATION I GEORGIA BURKE COUNTY 4

GEORGIA POWER COMPANY STATION LOCATION FOR THE POPULATION STUDY IN THE SAVANNAH RIVER ADULT FISH STUDY.

FIGURE 1

Station III located at river km 241.9 (river mile 150.9) and at the proposed site of the intake structure. The station is characterized by fallen trees, overhanging tree limbs, and a relatively straight shoreline with areas of shallow and deep water.

Station IV located at river ics 243.6 (river mile 151.4) approximately

.8 km (.5 miles) upstream from the proposed intake struc-ture. The station is a sandy beach-like area with no trees or submerged logs. During the study the area was used as a spoil area as part of the continuous dredging of the channel by the U.S. Army Corps of Engineers. .

Station V Located at river km 244.9 (river mile 152.2) approximately 2.1 km (1.3 miles) upstream from the proposed intake struc-ture. The station has many submerged logs and stumps, fallen trees, overhanging tree limbs, and a combination of shallow and deep water.

Eight surveys were originally scheduled for alternating months.

Sa=ples were taken in September and December,1977; and April, June, August, October, and December, 1978. Samples were rot taken in Feb-ruary, 1978, because heavy rains resulted in high water levels.

Sampling was done by electrofishing with most species identified, weighed, measured, and released in the field. Specimens which could not be identified were preserved in 10% formalin and brought to the l

Georgia Power Company Environmental Affairs Center Laboratory in i

Decatur for identification. Dissolved oxygen concentration, conduc.tivity, i

pH, and air and water temperatures were measured at the time of sampling to study possible changes in water chemistry.

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RESULTS AND DISCUSSION The family, scientific and common names, of fishes collected in the Savannah River are given in Table 1. Thirty-nine species and 1109 individuals were collected (Tables 2 through 8). Six species, Amia calva, Lepomis auritus, Minvtrema melanops, Notropis hudsonius, Notropis leedsi, and Notropis niveus, were collected on all surveys (Table 9). Centrarchus macropterus, Dorosoma petenense, Esox niger, Ictalurus catus, Lepomis marginatus, Morone saxatilis, Notropis macu-latus, and Pomoxis annulu is were collected only once during the entire study. This may be caused by spawning migrations, as in the case of anadromous species, low numbers of individuals within a species, habi- -

tat preference, and the selectivity of the electrofisher.

The family Cyprinidae comprised 69:: of the total number of individuals, with the Centiarchidae comprising 10.7%. The family Percichthyidae comprised only .1% and was represented by one specimen (Table 10). Seventeen game and comercial species were collected, constituting 16% of the total number of individuals, whereas the non-game and non-commercial species comprised 84% (Table 11). Table 12 gives the mean lengths in millimeters and the range of total lengths for each species for the months sampled.

The total biomass for the game and coisnercial species was 23.7 kg. (Table 13). Morone saxatilis comprised 4.3% of the biomass, while 1epomis my.rinatus comprised only .005%. Biomass of non-game and non-commercial species was 124.5 kg, or 84% of the total biomass, which-as 148.2 kg. (Table 14). The greatest poraion of the non-game and T

non-commeretal species biomass was made up hf Amia calva, with 43.1

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kg., or 29% of the biomass.

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Dahlberg and Scott (1971) list 100 species of fish in the Savannah River drainage in Georgia, with 69 species known to occur in riverine habitats in the vicinity of the plant site (McFarlane et al.1978).

McFarlane et al. (1978) found the resident fish comunity of the intake canals of SRP similar to the river in terms of species composition. In terms of relative species abundance, a distinct difference was noted from the community of the intake canals and the riverine community. The data from the Savannah River Plant (SRP) and ar study show the family Cyprinidae (minnows) to be the dominant family in the river. The domi-nant species in the SRP canals were sunfishes, which seem to prefar slow moving currents or lake like habitats produced by the intake -

canals.

The Plant Vogtle site is located on a section of the Savannah River classified by the Environmental Protection 91 vision (1974) as Fishing, Propagation of Fish, Shellfish, Game and Other Aquatic Life; or for any other use requiring water of a lower quality. Under this classification, dissolved oxygen concentration for warm water species of fish is a daily average of 5.0 mg/l and no less than 4.0 mg/1. The pH range is 6.0 to 8.5, and water temperature is not to exceed 32.2 C (90.0 F). Air temperature ranged from 13.8 to 39.0 C. Water tempera-ture ranged from 13.3 to 26.0 C. Dissolved oxygen concentration ranged from 5.6 to 7.5 ppm. The pH ranged from 6.0 to 6.9, and conductivity ranged from 38.0 to 65.0 micromhos/cs. The data for dissolved oxygen concentration, pH, and water temperature were all within the limits for the State of Georgia.

Construction of' the intake structure is scheduled to begin in

. March,1981, with completion scheduled for the end of 1982. The site 6

is in a narrow portion of the Savannah River floodplain and covered by second-growth vegetation. Construction will consist of clearing approximately nine acres of land and digging a canal 126.2 m (414 f t.)

long, 12 m (40 ft.) wide, and 4 m (13 ft.) deep at normal river eleva-tion (80 f t. mr.1).

The following is a general comparison of the impingement studies conducted at the SRP and our data. An attempt to predict impingement losses at Plant Vogtle is also presented. The data for the SRP show that 36 species and a total of 469 fish were impinged in a 12-month period for the three canals designated as 1G, 3G, and SG. Lapingement rates were estimated to be 11.2 fish per day, or 4,088 fish for one year (McFarlane personal communication). In their study published in l 1978, McFariane, et al. noted that ! r a 10-month period, 35 species and 347 fishes were impinged in the three canals. No species constituted more than 10% of the sample, with 12 of the 35 species represented by either one or two individuals 3 Eighteen Alosa sapidiseima were impinged during the study. Fir,h which were obviously dead and decomposir; were recor. 'd, but not tabulated in the final data (McFarlane, et al.1978).

Spawning mortality of Alosa sapidissima was noted by Cheek (1968) in coastal streams of the South Atlantic states and may be the reason for the dead fish on the intake screens. The most common species impinged l

were Enneacanthus gloriosus, Lepomis gulosus, Ictalurus punctatus, and Perca flavescens. Twelve species of centrarchids were Lapinged, con-stituting 46% of the sample; while 5 ictalurids and 3 clupeids comprised 13% and 15%, respectively. McFarlans t al. (1978) further stated that while the 35 species were not impinged equally, there was no single species which predominated. In addition, the dominate species found in the canal did not constitute a corresponding fraction of the impingement samples.

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l River discharge is co alled by the four dams located upstream i and operated by the U.S. ,ucy Corps of Engineers. The SRP operates l three pumping staticas two ten-pump units (1G and 3G), and one six-pump unit (5G). Th= 1G canal is 500 m long, 30 to 70 m wide, with a minimum depth of 2 m, depending'on river elevation. The 3G canal is 410 m long, 27 to more than 90 m wide, with a minimum depth of 2 m.

The SG canal is in a cove 12 m vide and 20 m from the river to the trash racks. Minimum depth is 2 m. Intake velocity in front of the intake screens for the 1G and 3G canals is 0.38 m/sec (McFarlane et al. 1978).

The proposed intake canal at Plant Vogtle is 126.2 m long, 12.0 m -

wide, and 4 m deep at normal river elevation. At a river elevation of 24.3 m (80 ft.), the velocity through the trash rack will be less than 0.15 m/sec (0.5 fps), and through the traveling screens less than 0.2 m/sec (0.7 fps). The intake structure will house four pumps (2 pumps per unit), each with a capacity of 1.4 m /sec (22,000 gpm). Under normal conditions, approximately 2.5 m3 /sec (40,000 gpm) of water will be pumped from the river.

In a comparison of the impingement of fish at the SRP with 33 power plants, only two plants had lower impingement. "The virtual absence among the impingement samples of small fishes co:snonly en-

' countered in the intake canals, such at mosquitofish, brook silverside, and several minnows, indicate that many small, resident fishes have little problem in avoiding impingement" (McFarlane et al. 1978). The l

NPDES 316(b) demonstration at the SRP was successful in demonstrating the adequacy of thep"lant's cooling-water intake structures to meet the requirements of Section 316(b) of the Federal Water Pollution Catrol Act.

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1 Since the Vogtle canal is smaller than the 2 SRP canals (lG and 3G), it will afford less area for fish to seek shelte'r. The velocity in front of the Vogtle screens will be about 1/4 to 1/3 that of the i

velocity in front of the SRP screens. Since SRP studies indicated that most fish escaped impingement, it follows that even fewer will be impinged at Vogtle. The NPDES 31 usa; demonstration for SRP was successful and we re confident that any stmilar demonstration required by the State of Georgia for Plant Vogtle will also be successful.

] Therefore, impingement at Vogtle will not have an adverse effect on the resident and anadromous fish of the Savannah River because of the follcwing: (1) a single intake structure, (2) low intake veloci-ties, and (3) a short intake canal reducing the amount of available area for the population of certain species to develop. Fish will'Le impinged at the proposed electric generating plant, but predictions 4

are that the number of individuals impinged will be low and that no single species will dominate the Lapingement sample.

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1 Literature Cited Cheek, R. P. 1968. The American Shad. U.S. Fish Wildlife Service Fish. M aflet. 614: 13 pp.

Dahlberg, M. D., and D. C. Scott. 1971. The freshwater fishes of Georgia. Bull. Ga. Acad. Sci. 29(1):1-64.

Environmental Protection Division. 1974. Water quality investigation:

Savannah River basin in Georgia. Ga. Dept. Nat. Res., Atlanta, Ga.

194 pp.

Environmental Protection Division. 1974. Pages 701-731 in Rules and regulations for water quality control, chapter 391-3-6, revised June, 1974. Ga. Dept. Nat. Res., Atlanta, Ga.

McFarlane, R. W., R. F. Frietsche, and R. D. Miracle. 1978. Impingement sud entrainment of fishes at the Savannah River Plant: An NPDES 316(b) demonstration. E. I. DuPont de Nemours and Company Savannah River laboratory Aiken, S.C. 68 pp.

• United States Atomic Energy Connission. 1974. Environmental statement related to the proposed Alvin W. Vogtle Nuclear Plant, Units 1, 2, 3 and 4. Washington, D.C. Parts 6 and 11.

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Table 1. Family, scientific and common names, of fishes collected in the Savannah River Adult Fish Study. ,

Scientific Name Cotanon Fame Lepisosteidae Lepisosteus osseus Longnose gar Amiidae Amia calva Bowfin Anguillidae Anguilla rostrata American eel Clupeidae Alosa aestivalis Blueback herring Alosa sapidissima American shad Dorosoma cepedianum Gizzard shad Dorosoma petenense Threadfin shad Esocidae Esox niger Chain pickerel Cyprinidae Cvprinus carpio Carp Hybognathus nuchalis Silvery minnow Hybopsis rubrifrons Rosyface chub Golden shiner Notemigonus crvsoleucas Notropis chalybaeus Ironcolor shiner Notropis hudsonius Spettail shiner Notropis leedsi Ohoopee shiner Notropis maculatus Taillight shiner Notropis niveus Whitefin shiner Notropis petersoni Coastal shiner Notropis spp. Minnov Oosopoeodus emiliae Pugnose shiner -

Catostomidae Minytrema melanops Spotted sucker Moxostoma anisurum Silver redhorse Ictaluridae Ictalurus brunneus Snail bullhead Ictalurus catus White catfish Belonidae Strongylura marina Atlantic needlefish Poeciliidae Gambusia affinis Mosquitofish Atherinidae labidesthes sicculus Brook silverside Percichthyidae Morone saxatilis Striped bass Centrarchidae Centrarchus macropt:erus Flier Lepomis auritus Redbreast sunfish Lepomis nacrochirus Bluegill Lepomis marginatus Dollar sunfish Lepomis punctatus Spotted sunfish Micropterus salmoides Largemouth bass 11

Table 1. Continued.

< Scientific Name Common Name Pomoxia annularis White crappie Pomoxis nigromaculatus Black crappie Percidae Perca flavescens Yellow perch Percina nigrofssefata Blackbanded darter Ngilidae Ngil cephalus Striped mullet O

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Table 2, Species of fish and number of individuals collect:td in i September,1977, in the Savannah Riier Adult Fish Study.

Species Stations I E III E V TOTALS Asia calva 2 1 1 5 9 Anguilla rostrata 1 1 2 Alosa sapidissima 4 1 5 Esox niger 2 2 Hybognathus nuchalis 2 2 Notropis chalybaeus 3 3 Notropis hudsonius 1 22 23 Notropis leedsi 3 1 9 21 34 Notropis niveus 4 4 Notropis petersoni 4 1 29 34 Notropis spp. 1 1 Opsopoeodus emiliae 1 3' 4 Minytrema melanops 2 1 1 2 6 G&mbusia affinis 1 2 3 Labidesthes sicculus 1 1 8 10 Lepomis auritus 4 3 3 10 Impomis macrochirus 2 2 4 lapomis marginatus 1 1 Lepomis microlophus 1 1 Impomis punctatus 4 3 3 2 12 Micropterus salmoides 2 2 Perca flavescens 1 1 2 Percina nigrofasciata 1 1 lingil cephalus- 1 2 1 4 Totals 26 7 18 24 104 179 13

iable 3. Species of fish and number of individuals collected in December, 1977, in the Savannah River Adult Fish Study.

Species Stations I II, III W V TOTALS Amia calva 1 1 Eosa sapidissima 1 1 Dorosoma petenense 1 1 Cvprinus carpio 1 1 Hybognathus nuchalis 1 1 Notropis hudsonius 12 12 Notropis leeds 1 3 13 4 4 l? 43 Notropis niveus 10 6 1 5 5 27 opsopoeodus emilise - 1 1 2 Minytrema melanops 1 1 Gambusia affinis 2 2 Lepomis auritus 3 1 4 ,

Lepomis punctatus 2 1 3 Pomoxis annularis 1 1 Percina nigrofasciata 1 1 ,

Totals 37 21 8 9 26 101 14

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i Table 4. Species of fish and number of individuals collected in April, 1978, in the Savannah River Adult Fish Study.

I Species Stations I II III IV V TarALS Asia calva 3 3 Anguilla rostrata 1 1 1 3 Alosa aestivalis 1 1 Cyprinus carpio 2 1 3 Hytognathus nuchalis 1 2 27 30

Notropis hudsonius 1 1 Notropis leedsi 1 1 1 2 5 Notropis niveus 10 1 11 Notropis petersoni 1 1 2

' Minytrema melanops 2 9 4 3 Strongylura marina 1 1 Morone saxatilis 1 1 Centrarchus macropterus 1 1 -

Lepomis auritus 2 1 1 4

IAtpomis microlophus 1 1 Lepomis punctatus 2 2 4 -

Micropterus salmoides 1 1 Totals 28 3 10 4 36 81 4

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Table 5. Species of fish and number of individuals collected in June,1978, in the Savannah River Adult Fish Study.

Species Stations I II III IV V TOTALS Lepisosteus occeus 1 4 5 Amia calva 1 2 3 Anguilla rostrata 3 3 Alosa aestivalis 4 4 Dorosoma cepedianum 3 2 5 Hybognathus nuchalis 4 4 Notropis hudsonius 1 1 Notropis leedsi 14 1 2 8 6 31 Notropis niveus 8 2 2 12 Notropis petersoni 1 2 3 Minytrema melanops 6 1 7 Moxostoma anisurum 2 2 Strongylura marina 1 1 Impomis auritus 2 1 1 2 6 Impomis macrochirus 1 1 2 Lepomis microlophus 1 1 Impomis punctatus 1 2 3 1 Micropterus salmoides 1 1 1 1 4 Pomoxis nigromaculatus 1 1 Perca flavescens 1 1 Mugil cephalus 2 1 1 4 Totals 51 3 8 20 21 103 16

Table 6. Species of fish and number of individuals collected in August, 1978, in the Savannah River Adult Fish Study.

Species Stations I II III IV V TOTALS Lepisosteus occeus 2 1 1 2 6 Asia calva 1 1 Anguilla rostrata 1 1 1 3 Alosa sapidissima 2 5 1 8 Dorosoma cepedianum 2 4 2 1 9 Notemigonus crysoleucas 1 1 2 Notropis hudsonius 2 1 3 Notropis leedsi 12 1 7 20 7 47 Notropis niveus 4 4 Notropis petersoni 2 7 12 21 Minytrema melanops 2 2 1 5 10 Ictalurus brunneus 1 1 Iccalurus catus 1 1 Labidesthes sicculus 1 1 2 4 Lepomis auritus 2 2 Lepomis macrochirus 1 1 Lapomis microlophus 1 1 Micropterus salmoides 1 2 3 Percina nigrofasciata 1 1 litgil cephalus 2 2 Totals 34 5 20 33 38 130 i

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Table 7. Species of fish and number of individuals collected in October, 1978, in the Savannah River Adult Fish Study.

Species Stations I II III IV V TOTALS Amia calva 1 2 3 Alosa sapidissima 9 1 2 12 Dorosoma cepedianum 1 1 Hybognathus nuchalis 1 4 12 17 Hybopsis rubrifrons 20 20 Notemigonus crysoleucas 1 3 4 Notropis chalybaeus 3 3 Notropis hudsonius 31 31 Notropis leedsi 23 7 14 52 96 Notropis niveus 11 3 14 Notropis petersoni 4 10 16 58 88 Opsopoeodus emiliae 4 2 6 Minytrema melanops 3 1 1 5 -

Moxostoma anisurum 2 2 Gambusia affinis 1 1 Labidesthes sicculus 1 4 5 lepomis auritus 3 3 6 4 16 t

lepomis macrochirus 1 1 1 2 5 lepomis microlophus 1 1 Lepomis punctatus 2 3 5 Micropterus salmoides 1 2 2 2 7 Pomoxis nigromaculatus 1 1 Perca flavescens 2 2 Percine nigrofasciata 1 1 2 Mugil _cephalus 1 1 Totals 60 5 31 56 196 348 l

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Table 8. Species of fish and number of individuals collected in December,1978, in the Savannah River Adult Fish Study.

l Species Stations I, H III E V TOTALS Impisosteus osseus 1 1 Asia calva 3 1 1 5 Anguilla rostrata 1 1 Alosa aestivalis 3 1 4 i Alosa sapidissima 2 2 4 i Dorosoma cepedianum 2 1 3

! Cyprinus carpio- 1 1 j Hybognathus nuchalis 2 3 5 Hybonsis rubrifrons 1 1 Notropis c_halybaeus 1 1 Notropis hudsonius 3 3 i Notropis leedst 19 9 64 92 i Notropis maculatus 1 1 -

Notropis niveus 4 1 5  !

Notropis peteruni 3 6 9 Opsopoeodus emiliae 1 1 i Minytrema melanops 2 1 1 2 6

-Ictalurus brunneus 1 1 i

Labidesches sicculus 2 6 3 11

, Impomis auritus 1 1 3 1 -5 Lepomis macrochirus 1 .

1 2 Leposis microlophus 2 2 Micropterus salmoides 2 2 Percina nigrofasciata 1 1 Totals 45 1 5 . 21 95 167 i

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Table 9. Species of fish and numbers of individuals collected for each month in the Savannah River A:dult Fish Study.

Species Dates 9/77 12/77 4/78 6/78 8178_ 10/78 12/78 TOTALS lapisosteus osseus 5 6 1 12 Amia calva 9 1 3 3 1 3 5 25 Anguilla rostrata 2 3 3 3 1 12 Alosa aestivalis 1 4 4 9 Alosa sapidissima 5 1 8 12 4 30 Dorosoma cepedianum 5 9 1 3 18 Dorosoma petenense 1 1 Esox niger 2 2 Cyprinus carpio 1 3 1 5 Hybognathus nuchalis 2 1 30 4 17 5 59 Hybopsis rubrifrons 20 1 21 Notemigonus crysoleucas 2 4 6 Notropis chalybaeus 3 3 1 7 Notropis hudsonius 23 12 1 1 3 31 3 74 Notropis leedsi 34 43 5 31 47 96 92 348 Notropis maculatus 1 1 Notropis niveus 4 27 11 12 4 14 5 77 Notropis petersoni 34 2 3 21 88 9 157 Notropis spp. 1 1 Opsopoeodus emiliae 4 2 6 1 13 Minytrema melanops 6 1 9 7; 10 5 6 44 Moxostoma anisurum Oi 2 4 Ictalurus brunneus 1 1 2 Ictalurus catus 1 1 j Strongylura marina 1 1 '

2 Gambusia af finis 3 2 1 6 Labidesthes sicculus 10 4 5 11 30 Morone saxatilis 1 1 Centrarchus macropterus 1 1 Lepomis auritus 10 4 4 6 2 16 5 47 Lepomis macrochirus 4 2 1 5 2 14 Lepomis marginatus 1 1 Lepomis microlophus 1 1 1 1 1 2 7 i Lepomis punctatus 12 3 4 3 5 27 l Micropterus salmoides 2 1 4 3 7 2. 19 Pomoxis annularis 1 1 l

Pomoxis nigromaculatus 1 1 2 Perca flavescens 2 1 2 5 Percina nigrofasciata 1 1 1 2 1 6 Mugil cephalus 4 4 2 1 11 Totals ,179 101 81 103 130 348 167 1109 0 of Species 23 15 17 21 20 25 24 20 m

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f Table 10. Percent composition of each f amily of fishes collected l in the Savannah River Adult Fish Study.

j i Family  % Composition Cyprinidae 69.0

< Centrarchidae 10.7 Clupeidae 5.2

! Catostomidae 4.4 Atherinidae 2.7

Amiidae 2.0 Lepisosteidae 1.0 Anguillidae 1.0 Mugilida* 1.0 Percidae 1. 0 Poeciliidae .5 Ictaluridae .3 Belonidae .2 Esocidae .2 Percichthyidae .1 .

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Table 11. Percent composition of game and commercial and non-game and non-comercial species collected in the Savanesh River Adult Fish Studv.

Game and Comercial Species  % Composition Impcmis a_uritus 4.2 Alosa sapidissima 2.7 Lepomis punctatus 2.4 Micropterus salmoides 1.7 Impomis macrochirus 1.3 Mugil ceahalus 1.0 Alosa aestivalis .8 Lepomis microlophus .63 Perca flavescens .45 Ictalurus brunneus .2 Pomoxis nigromaculatus .2 Esox niger .18 Centrarchus macropterus .09 Pomoxis annularis .09 .

Ictalurus catus .09 Morone saxatilis .09 Iepomis marginatus .09 16%

Non-game and Non-Commercial Species  % Composition Notropis leedst 31.4 Notropis petersoni 14.2 Notropis niveus 6.7 Notropis hudsonius 6.6 Hybognathus nuchalis 5.3 Minytrema melanops 4.0 labidesthes sicculus 2.7 Amia calva 2.0 Hybopsis rubrifrons 1.9 Dorosoma cepedianum 1.6 Opsopoeodus emiliae 1.1 Impisosteus osseus 1.0 Anguilla rostrata 1.0 Notropis chalybaeus .63 j Notemigonus crvsoleucas .54 1 Percina nigrofasciata .54 Cambusia affinis .54 Cvprinus carpio .45 Moxostoma anisurum .4 ,

Strongylura marina .2 Notropis maculatus

.09 Notropis spp. .09 Dorosoma petenense .09 84%

22

Table 12. Mean lengths in millimeters with the range in parenthesis for each species for the Savannah River Adult Fish Study.

Species K) nth 9/1977 12/1977 4/1978 6/1978 8/1978 10/1978 12/1978 lapisosteus osseus 500.65 479.75 (360-560) (153-535) 670 Asia calva 553.3 524 643.75 570 570.67 .

(420-662) 450 (405-602) (525-760) (500-600) (462-696) l Anguilla rostrata 485 398 b b (43s'540) (203-508) 338 Alosa aestivalis 44.8 68.65 310 (43-47) (68-70)

U Alosa sapidissima 159.8 48.33 87.43 103.75 (76-90) 115 (33-65) (61-100) (100-105)

Dorosotaa cepearanum 332.9 343.45 355 (220-420) (320-315) 368 (266-402)

.Dorosoma petenense 51 Esox niger 287.5 (190-385)

Cyprinus carpio 697.5 575 (670-720) 703 Hybognathus nuchalp 70.5 73.83 64.8 62.7 152.2 (70-71) 67 (72-78) (36-76) (46-72) (67-85)

Hybopsis rubrifrons 56.8 60 (41-63)

= * -A .e - -

I Table 12. Continued.

Species Month 9/1977 12/1977 4/1978 6/1978 8/1978 10/1978 12/1978 Notemigonus crysoleucas 94 148 (57-131) (60-210) 35 Notropis chalybaeus 51.7 36 (47-58) (33-40)

Notropis hudsonius 70.5 80.3 47.25 60.2 62.3 (59-76) (55-110) 78 95 (38-52) (44-71) (54-70)

Notropis leedst 46.5 49.1 67.88 62.66 62.68 55.63 46.57 (29-69) (21-76) '(55-79) (41-90) (40-88). (25-79) (27-80)

Notropis maculatus

- 38 Notropis niveus 36.3 62.17 53.55 60.27 61.5 61.65 62.4 (34-42) (37-89) (39-77) (46-105) (55-66) (44-90) (37-103)

Notropis petersoni 49 60 45 38.97 52.53 51.8 (44-52) (58-62) (42-47) (18-68) (27-67) (32-65)

Notropis spp, a Opsopoeodus emiliae 40.65 52 48.65 (38-46) (51-53) (41-60) 55 Minytr'ma melanops 338.13 424.03 334.75 405.1 325.77 396.13 (70-495) 205 (342-475) (149-456) (305-502) (79-495) (288-445)

Hoxostoma antsurum 412.5 416.5 (395-430) (413-420)

. = ..

Table 12. Continued.

j' Speclea Month 9/1977 12/1977 4/1978 6/1978 8/1978 10/1978 12/1978 Ictalurus brunneus 137 225 Ictalurus catus 385 Strongylura marina 403 435 cambusia affinis 27.25 36.5 (27-28} (31-42) 47 Labideathes sicculus 52.63 54.67 56.5 57.4

(40-67) (33-79) (53-66) (42-65)

$ Morone saxatills 700 Centrarchus macropterus 120 tepomis auritus 80.17 89.65 130.17 133.63 166 102.2 88.25 (35-152) (55-103) (51-170) (65-220) (150-182) (140-180) (45-103)

Impomis wacrochirus 79.5 100.5 105.25 139 (67-88) (81-120) 160 (55-150) (126-152)

Imposts marginatus 70 Impomis microlophus 165.5 130 59 86 205 140 (165-166)

I Table 12. Continued.

Species Nath 9/1977 12/1977 4/1978 t/1978 8/1978 10/1978 12/1978 Lepomis punctatus 84.33 105 81.25 92.5 92.15 (44-144) (43-135) (53-100) (75-140) (45-130)

Micropterus salmoides 267.5 198.25 191.5 203.75 245 (75-460) 118 (110-280) (68-315) (80-320) (237-253)

Pomoxis annularis 273 Pomoxis nigromaculatus b b 300 g Perca flavescens 147.5 131.5 m (95-200) 130 (103-160) ,

Percina nigrofasciata 63.5 62 44 69 (58-69)

Hugil cephalus 341.67 339.17 235 (295-375) (250-395) (230-240) 44

.a = Specimen damaged b = Specimen released without measurements

Table 13. Biomass of game and commercial species for the Savannah River Adult Fish Study.

Weight in Grams  % of Total Species (Kilograms) Biomass Morone saxatilis .

6,350.0 ( 6.4 kg) 4.3 Micropterus salmoides 5,016.5 ( 5.0 kg) 3.4 Mugil caphalus 4,801.0 ( 4.8 kg) 3.2 Lepomis auritus 2,206.0 ( 2.2 kg) 1. 5 Iepomis punctatus 818.7 ( .8 kg) .6 Ictalurus catus 800.0 ( .8 kg) .5 Esox niger 643.6 ( .6 kg) .4 Pomoxis nigromaculatus 628.4 ( .6 kg) .4 Lepomis macrochirus 624.4 ( .6 kg) .4 Alosa aestivalis 512. 1 ( .5 kg) .3 lapomis microlophus 430.2 ( .4 kg) .3 Pomoxis annularis 280.0 ( .3 kg) .2 Perca flavescens 192.2 ( .2 kg) .1 '

Ictalurus brunneus 155.9 ( .2 kg) .1 Alosa sapidissima 152.0 ( .2 kg) .1 Centrarchus macropterus 100.0 ( .1 kg) .07 Iepomis marginatus 7.0 ( .007 kg) .005 23,718.0 (23.7 kg) 16%

I I

l l

l -

t j 27

Tabip 10 B.omass of non game and non-commercial species for the Savannah River Adult Fish Study.

Weight in Grams ll of Total Species (Kilograms) Biomass Amia calva 43,099.5 ( 43.1 kg) 29.0 Minytrema melanops 33,922.2 ( 33.9 kg) 23.0 Cyprinus carpio 27,262.8 ( 27.3 kg) 18.0 Dorosoma cepedianum 9,505.0 ( 9.5 kg) 6.4

. Impisosteus osseus 4,513.3 ( 4.5 kg) 3.0 l

Moxostoma anisurum 3,800.0 ( 3.8 kg) 2.6 Anguilla rostrata 563.2 ( .6 kg) .4 Notropis leedst 516.4 ( .5 kg) .3 Strongylura marina 307.2 ( .3 kg) .2 Notemigonus crysoleucas 225.6 ( .2 kg) .2 Notropis niveus 203.2 ( .2 kg) .1 Notropis hudsonius 14 9.5 ( .1 kg) .1 Netropis petersoni 146.1 ( .1 kg) .09 ~

Hybognathus nuchalis 101.0 ( .1 kg) .07 Hybopsis rubrifrons 34.5 ( .03 kg) .02

, Labidesthes sicculus 32.5 ( .03 kg) .02 ,

opsopoeodus emiliae 13.1 ( .01 kg) .009 Percina nigrofasciata 10.9 ( .01 kg) .007 Notropis chalybaeus 5.8 ( .006 kg) .004 i

Gambusia affinis 3.6 ( .004 kg) .002 Dorosoma petenense 1. 3 ( .001 kg) .0009 124,417.0 (124.4 kg) 84 %

28

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