BENTON HARBOR POWER PLANT LIMNOLOGICAL STUDIES PART XII. STUDIES OF THE FISH POPULATION NEAR THE DONALD C. COOK NUCLEAR POWER PLANT, 1972 David J. Jude Thomas W. Bottrell John A, Dorr, III Timothy J. Miller Under contract with: American Electric Power Service Corporation Indiana and Michigan Electric Company Special Report No. 44 of the Great Lakes Research Division The University of Michigan Ann Arbor, Michigan March 1973 ACKNOWLEGEMENTS The authors would like to take this opportunity to make their appre- ciation known to the many individuals whose aid made the achievements of this first pre-operational study possible. The guidance and counsel of Dr. John C. Ayers through all phases of this project was inimitably helpful and is greatly appreciated. The assistance of William Yocum and Donald McKeny in the design of new fishing gear and in the field work deserves our thanks, as does the laboratory and field work by James Lee,, We are also highly appreciative to our field crew composed of Bruce Higgins , Mohammed Omair, Donald Robinson, and Erwin Seibel, for the long and arduous hours they put in. Credit is also due to John Stewart and Elizabeth Ayers for their work on fish eggs. In addition, we want to express our gratitude to LaRue Wells of the Bureau of Sport Fisheries and Wildlife for the benefit of his many suggestions and for the data and identified fish larvae he provided for our use. Assistance at the Cook Plant site by Indiana and Michigan Electric Company personnel aided immeasurably to the facilitation of our field work. We extend our appreciation to Jon Barnes for his efforts as liaison between our staff and that of the Indiana and Michigan Electric Company; to Marvin Demerest for his help in our field work; to Robert Purcell for offering us the use of his facilities when needed; and to Robert Lawson and Robert Sampson for the. consultations. Finally, we would also like to thank Miss Janine Handyside and Mrs. Robin Neumiar the editing and typing of this report. STUDIES OF THE FISH POPULATIONS NEAR THE DONALD C. COOK NUCLEAR POWER PLANT, 1972 INTRODUCTION Much concern has been expressed about possible environmental impact of nuclear power plants on the fish population of an area. Necessary research answering some of the pertinent questions is being sponsored by the Michigan and Indiana Power Company for the Donald C. Cook Nuclear Power Plant located at Bridgman, Michigan, on Lake Michigank Fishing operations, in the form of monthly sampling surveys, were begun in the vicinity of the Cook Plant site during May, 1972, and continued through November. These investigations are being conducted to supply data in the following areas: For adult fish - 1. Establishing species composition and indexes of abundance for fish at the site area 2. Determining what species use the area for spawning or as a nursery grounds 3. Determining the species and size of fish entrained in the Cook plant cooling-system waters For larval fish - 1. Establishing what species (if possible) are present at the site and their seasonal and depth distribution 2. Determining the number of larvae which pass through the plant's water cooling system Information gathered now on the fish populations of the area will be used to evaluate effects of thermal discharge on the fisheries. Pre- operational studies will continue as well as intermittent entrainment roonitering, depending on pumping schedules. MATERIALS AND METHODS Study Area The Donald C. Cook Nuclear Power Plant is located on the shores of Lake Michigan in Berrien county near Bridgman, Michigan. Stations were established in the vicinity of the plant site for seining (stations A and B, Fig. 1) and for trawling and gillnetting (stations C and D, Fig. 1) . Physical and Limnological Data For each time a particular fishing gear was used information on weather and other conditions was collected. Wind direction and speed were obtained using an aii^momiter when aboard the MYSIS, and estimated at other times. Wave direct ion and het;:^ht was visually estimated. Water temperature for trawls, gillnets,and larval tows were procured at the surface and the fishing depth using a battery-operated tele- thermometer. A glass mercury thermometer -was used during beach seining. Beach Seining Beach seining was ccr "fucted only during periods of relative calm using a 38.1 m X 1.8 m (125 k d tt.i nylon bag seine having 0.5 cm (0.25 in) bar mesh. The s< ^ - was first stretched perpendicular to the shoreline, and then pulled p i.xel to the shore a distance of 61 m (200 ft). Two to four consecutive, non-overlapping collections were taken in this manner «.2~ 1 Col led ion sL.i Lions: A - bench scinis B - bcacli seines C - 6.1 meter trawls and gillnet sets D - 9.1 meter trawls and gillnet sets NORTH RANGE POLE intakes O o o outfalls COOK PLANT I 300 600 SCALE (meters) 900 SAFE HARBOR SOUTH !• RANGE POLE / FIG. 1. Map of the study area showing locations of the Cook Plant, intake and discharge structures, and seining (A,B), gillnetting and trawling (C,D) stations, May to November 1972. -2a- during a day and a night once each month at stations A and B. The seine was pulled in a northerly direction at station A and in a southerly dir- ection at station B. In October and November the 4.9 m (16 ft) Boston Whaler outboard was attached to the deep-water end of the seine and a 4-wheel drive vehicle to the shallow-water end. The seine was pulled considerably faster with this method than earlier hauls by hand. Trawling Replicate bottom tows of 10 minutes each were taken during both the day and night (except May and June) at station C and D using a semi- ballon nylon trawl having a 4.9 m (16 ft) headrope and a 5.8 (19 ft) footrope. The body of the net is composed of 3.8 cm (1.5 in) stretch mesh, the cod end of 2.3 cm (1.25 in) stretch mesh and the inner liner of 1.3 cm (0.5 in) stretch mesh. All trawls were made using the R/V MYSIS, except during May when the tug JAMES EDWARD was used. Aver- age speed of the tows was about 3 mph. Gillnetting During May, June, and November nylon gillnets of various lengths with bar mesh size of 6.4 and 7.6 cm (2.5 and 3 in) were set at stations C and D. In July an 82.4 x 1.8 m (270 x 6 ft) nylon gillnet of 6.4 cm (2.5 in) bar mesh was set at station D while a 144.9 x 1.8 m (475 x 6 ft) experimental gillnet was set at station C. This net was composed of 11 panels of netting as follows: three 7.6 m (25 ft) sections of the following bar mesh sizes - 1.3 cm (0.5 in), 1.9 cm (0.75 in) and 2.5 cm (1.0 in); and, eight 15.3 m (50 ft) sections of bar mesh sizes starting at 3.1 cm (1.25 in) and increasing in increments of 0.65 cm (0.25 in) -3- up to 7,6 cm (3.0 in) size mesh. All gillnet sets from August to October, and all but two in November^ were conducted using the experimental gillnet. Nets were set perpendicular to the shoreline from 3.5 to 7 hours for day sets, while night sets were placed parallel to the shore for times ranging from 7 to 21 hours. Longer sets occurred when sudden storms prevented net retrival. Replicate gillnet sets were made during both the day and night in July and August, but only during the day in September. One set per day and night at each station was made during all other months . Fish Larvae and Egg Studies A one-half meter diameter plankton net of no. 5 mesh (280y aperature) was used to collect fish larvae at the two trawling stations (C and D, Fig. 1). Samples were collected once per month during the day from May to November, excluding July and August. At each station triplicate 5 minute (in May they were 2,5 minutes) horizontal tows were obtained in a stepwise manner proceeding in 1 meter increments from 2 meters to the surface. The net was towed for about 1.6 minutes at each 1 meter interval. Towing was done parallel to shore in alternating directions. The R/V MYSIS traveling at a speed of 2-4 knots was used to collect all samples. Samples were preserved with 10% formalin and counted with the aid of a large magnifying-glass lamp and dissecting scope. Larval fish were identified using F h (1929) and reference specimens collected in the Palisades plant area near South Haven. These reference specimens were identified Wells (Bureau of Sport Fisheries and Wildlife, Ann Arbor) . -4- Fish egg data were obtained from benthos counting personnel who made no special attempt to find fish eggs in all samples. Bottom fauna samples were collected in the area using a ponar dredge. Faunal samples were then passed through a 0.5 mm mesh screen. Fish In this report the terms egg, larvae, fry, juvenile^ and adult have been used. The term larvae refers to that stage in development starting after hatching from the egg through the post-larval stage to where the larvae resembles a young fish. Fry were arbitrarily defined as any fish less than 2.5 cm long and not a larvae. Juveniles arbitrarily refer to fish greater than 2.5 cm and not yet adult, while the term adult refers to all mature fish larger than juveniles, which are capable of or have spawned. Fry and juvenile fish were identified using Hubbs and Lagler (1964) with common and scientific names assigned according to the American Fisheries Society, Special Publication No. 6, 1970. Representative specimens of all species caught have been retained for reference and comparison. Juvenile and adult fish were counted, while fry numbers were visually estimated. Subsampling was used when too many fish were caught to weigh and measure individually. This was accomplished using two different proce- dures. In both methods every tenth fish was sampled and the rest were discarded. In the first case fish were separated into arbitrary size classes, while in the second case they were not. Fish less than 35 cm were preserved in 10% formalin while larger -5- fish were preserved in 12.5%. A longitudinal slit was made into the right, ventral side of the coelomic cavity of all fish greater than about 15 cm. After 5 to 28 days large specimens were stored permanently in 10% buffered formalin, while smaller ones were stored in 7% solution. After being in formalin from 2 to 8 weeks fish were measured to the nearest highest 0.5 cm. Problems with shrinkage and deformation were apparent, particulatily for large specimens. All fish were weighed individually except some of the spottail shiners, alewives, trout- perch, and smelt, which were processed differently. The latter were divided into arbitrary size groups and counted. Next the shortest and largest individual were weighed and measured individually. A total weight of each of the size groups was then obtained from which an average weight was calculated. When the latter method was used, average length is the mean of the maximum and minimum lengths , while average weight was obtained by dividing the total weight of the group by the number in it. Fish to 20 g were weighed on a triple beam balance to the nearest 0.1 g, those 20 to 70 g were weighed to the nearest 5 g using a sliding scale with a hook, while larger fish (or groups of fish) were weighed to the nearest 10 g using a dial scale with a hook or scoop. Scales were cleaned and calibrated approximately once per month. Information on clipping as well as lamprey scars was also collected when observed. Statistical and Comp utational Procedures Seine haul c& r i^ are reported as mean catch per 61 m of shore and trawling catches are reported as the mean catch per 10 minute trawl. -6- Standard errors were calculated for all means » but only Included on the graphs when their value exceeded 5% of the maximum value of the graph scale. On graphs » one standard error is displayed as a vertical line running perpendicularly through either one or both sides of the mean. Please note that in Figures 2 through II, the bars indicate numbers of juveniles when they are stippled and numbers of adults when they are not. For both of these designations, numbers of juveniles start from zero and extend upward to the top of the stippled area, and num-^ bers of adults depicted start from zero and extend upward to the top of the open area. The stippled and open areas in any given bar do not mean percent composition of the total. Among gillnets, catch-per-ef fort data are presented only for the experimental gillnet catches. Numbers caught and lengths and weights of fish captured in the non-experimental nets are shown in all other tables where gillnet data are reported. For gillnets which were set for different lengths of time during the day and night, numbers caught were adjusted to a catch-per-12 hour basis for day and for night catches. For the longer night sets numbers were included unadjusted. Larval tow catches are reported as total number of larvae found in three 10 minute tows. Since each 10 minute tow was obtained at a speed 3 of 2.3 to 4.6 mph, approximately 242 to 487 m of water was filtered through the net assuming 100% net efficiency. RESULTS Adult Fish As of February 16, 1973, thirty-six species of fish have been captured in the Cook Plant area or taken from the trash basket after pumping opera- tions (Table 1). These fish represent 19 families of fishes, with many warm water forms represented. This list is probably biased somewhat toward the inclusion of inshore species, as most sampling was done in 9.1 m of water or less. To evaluate the effect of water temperature, wind, waves, and weather on catch data, tables were constructed presenting such data for gillnets (Table 2), for seines (Table 3), for trawls (Table 4), and for larval tows (Table 5). It should be noted that most fishing operations are weather dependent, so that a bias toward fishing during fair weather occurred. The overall composition of the catch when numbers of fish captured by all types of gear (seine, gillnet, and trawl) were combined, revealed that five species made up over 98% of all fish captured (Table 6). Those five species in order of highest abundance were spottail shiner, alewife, rainbow smelt, yellow per ch^ and trout-perch. The next eight species, Johnny darter, white sucker longnose sucker, lake trout, chinook salmon, rainbow trout, emerald shiner, and longnose dace made up the next 1.7% of total catch, wh ' • 16 species comprised the remaining 0.3%. To indicate gCor selectivity and the diel activity of the various species of fish, total numbers caught (and percent of the total for each species) were broken down by gear type and by day and night (Table 7). -8- fish were captured during the night. For the spottails and alewives, it appeared that approximately equal numbers were taken during the day and night. The numbers of less-commonly captured species (Table 8) gives insight into where many of these species may be found. For example, rainbow trout were only captured during seining operations , and in equal numbers both during the day and night. Lake trout were captured with all three types of gear, whereas bloaters were only taken by trawl. Longnose dace and emerald shiners were captured only in the beach seining operations, and most longnose suckers were taken with gillnets. Most sculpins were taken by trawl. The minimum and maximum length as well as mean weight for samples of the 13 most commonly-caught species are presented in one large continuous table (Table 9). The order of presentation of species is the same as found in Table 6, with the order for gear types being gillnet , trawl, and seine. The length and weight of the less abundantly captured species of fish are found in Table 10. Gear type and the stations at which these fish were taken are also given* Fry The numbers of spottail shiner, alewife, and smelt fry (Table 11) indicated that August and September were the months of maximum abundance of fry in the shallow wate areas around Cook Plant. Numbers of spottail and smelt fry declined to zero in October and November, while considerable numbers of alewift. , were still present in October. Larval Fish The numbers of larval fish found in 10-minute tows at stations C and D -10- (Table 12) were low. The largest numbers were collected in June, with virtually none being found in May, September, and November. Unfortunately inadequate samples were taken during July and August, the months of maxi- mum abundance of larval fish. Fish Eggs Fish eggs found in benthos samples were measured using an ocular micrometer in a binocular scope and found to range from 0.90 to 1.00 mm in outside diameter. These egg diameters were then compared with egg diameters from 'eight other common species in the area and only eggs from yellow perch were found to be the same size. These eggs were less abund- ant in water shallower than 9.1 m (N = 19, mean = 21/ponar, S. E. = 5) than in water from 9.1 to 24.2 m deep (N = 13 , mean = 126/ponar, S. E. = 19). Strings of egg masses found on trawls June 11, 1972, were found to contain fish larvae at the yolk sac stage, which from the appearance and abundance of gravid perch in the area were tentatively identified as yellow perch larvae. -11- Table 1, Common and scientific names of all species of fish captured in the vicinity of the Cook Plant as of February 16, 1973. Fish were taken with netting gear unless otherwise noted. SCIENTIFIC NAME COMMON NAME Acipenseridae Acipenser fulvesoens lake sturgeon Catastomidae Catostomus catostomus Catostomus commersoni Carpiodes cyprinus longnose sucker white sucker quillback Centrarchidae Micropterus dotomieui Lepomis gibbosus Lepomis cyanellus , Pomoxis nigromaculatus smallmouth bass pumpkins eed green sunfish black crappie Clupeidae Alas a pseudoharengus Dorosoma cepedianion alewife gizzard shad Cottidae Cottus bairdi Cottus cognatus mottled sculpin slimy sculpin Cyprinidae Cyprinus aarpio Notropis hudsonius Notropis atherinoides Rhinichthys oataractae Couesius plumbeus carp spottail shiner emerald shiner longnose dace lake chub Esocidae Esox lucius northern pike Gadidae Lota lota ab burbot -12- Table 1, contM. Gasterosteldae Pungitius pungitiue nine-spine stickleback Ictaluridae ab Ictalurus melas Ictalurus punctatus black bullhead channel catfish Osmeridae Osmerus mordax rainbow smelt Percidae Perca f laves cens Etheostoma nigrum Stizostedion vitreum vitreimi yellow perch Johnny darter walleye Percopsidae Percopsis omiscomaycus trout perch Salmonidae .c Salmo gairdneri Salmo trutta Salvetinus namaycush Oncorhynchus kisutoh Onoorhynchus tshawytscha Coregonus clupeaformis Coregonus hoyi Coregonus artedii rainbow trout brown trout lake trout coho salmon Chinook salmon lake whitefish bloater lake herring (cisco) Umbridae Umbra limi central mud minnow From a gillnet set in 21.2 m (70 ft) of water. No data on length and weight of fishes was recorded. Obtained from the 1.5 cm (3/8 in) mesh basket which receives entrained fish and debris from the traveling screens. Two pheno types present. -13- 60 O T3 cd a •H CO >^ p. 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CO m T3 A ^ 0) 0) 0) 0) m M-l M-i •H •H •H :? rH U 15 ^ S 0) 0) rH rH rH Cd •H cd Cd 5 6^ &«^ in CM O vO UO rH O O o r*. o o CM O O d ocJ m rH • • o • CO • CO w/ >*-/ vO r^ in rH v-^ v-/ ^w' r^ »H >—• CM N-/ r* s-/ x: s-^ s—^ N-/ ^-/ >*• V— / N-^ ^-x N^ N»^ V-»' 00 •H 55 M-4 CO -d- CM o m o CO VO o ^d- o o o 00 rH o CM o in O O H • O rH in CM rH ON 00 CM VO CO CM CO C ss sz; rH rH 0) -H Pu d PN C M > CJ) /'-N /—N *«-^ /--S /-N /"-^ .^— s y"— N /— s /--N y-^s /— \ /— \ /"-N ^^ ^^» /-N 4J o vO m ON p o CM CO O ON o o o O o o o o CO o >^^S CM Csl o CO d d CO vO d cm' d d d o o d d d -• s.^ CO x-x N*' CM rH >w v«/ v_x v.-^ N-^ N*X >-• s-^ Nw^ s-/ iH ^^ »4-l -H O CO o Nw/ v-x v-^ N*^ -^ 00 rH vD rH o CO 00 o rH O o o o o O o O rH o ^ 0) • o rH rH CM CM O -H o CsJ CM r^ CO O 55 0) 0) a >. CO r^ iH • /-s /— s x-\ /-s •-S ^,m^ /*~s ^0.^ .^•^ ^-N /<**S /—N /'-S /-N /-^ ^-s /~\ /-N **-»» /'^ 4J Cd CM s-^ v.-^ s-^ v-*' N.'' N-X . CM -d- N— ^ CM V-*' s-/ c > ^ N— • S-^ N--/ v--/ >^^ N—/ s-^ •H J-T 60 T) TJ 0) •H C C 'Q 55 Cd 'H 1 o rH O CO CO CO CO rH cn o o o o o rH CM -d- o CM O O >^X > O *-/ r^ Si-' o V^ 4J B P^ S-X Nw' >w N-.' s-x >*• iH rJ o o cd >«-• n3 JJ u Q M-l VD CO VD ON lO - 60 4J 0) :z ^ CO 4-J P. cd o vTt o r-- r^ CO ._• v-X "^^ ^ Q) Jm >-i 60 CX Q) (U •H CO O. 1^ 55 rH CO ON VO o CM ON CM in o o CO rH rH o rH vO o o o x: 0) rC >> •. /— N ,,^-v /— N /--N ^•^ ^-^ ^^~^ ^^-»^ -/-s /»— s /--N x-N /--s /--N /-^ /^-N ^-^ /—"v /-^ cd U 0) 0) t)0 CO ON 00 o 00 rH VO o O o o in in r^ o o o rH o C0> o CO .H d d rH d CM rH d d o iH CO vO • o d • o rH • o ^ CO rH N-X v-*' s-*' N..-^ >w-' v.^ ^^-^ VO CM CM V--' in Nw' rH N*X r-^ >*-/ e 6ox: >» v-^ V— ' Vw/ s-x V— ' s-^ ^^-.^ N»-.' :3 c 4J cd C -H C Q x: (D 0) CO }-i o v^ o 00 rH CO (U TJ Cd }-l u •H rH cd M-l ^ 1 >^ o 4J o o r-\ o ^ 0) CO ^^ N— • O V-^ '^-X V^ N—/ V»^ V— ^ O O CNj O O O O o o OOOOOOOOO ooooooooo V-X Nw^ -s-x o ''— ^ O ^— ' ''^-^ O OOOrHOrHOO^H OOOOOOOOO ooooooooo w^wN^v-^v^v^O O -"-^ c o CO CO c c cd 10 ,". 20 15 I- m u g 10 CM f 3 ^ 15 u « 10 Day . \R III Day '^•. RAINBOW SMELT STA C Might STA D HL 41' TROUT-PERCH STA C I Night STA D A AB Jul Aug S«p Oct Nov a "Jul Aug s5p s«p STA C STA D C n 25 20 15 10 5 G 25 20 -15 - 10 ■ 5 STA C A AC STA D Afi "TJcT a 25 20 15 10 5 u " 8 20 ^ 15 10 -I 5 M(»ITH FIG. 3. No. of smelt and trout-perch c«u^t (bars) in glllnets In 1973. A - fi«h caught; B •« 21 hr set; C - 19 hr sat; trlapaglaa indicate temperature. -24- 360 270 (0 g 180 ^ 90 CO ^ '0 270 ^ 180 03 M O 90 20 15 10 Day ^ 5 d " (0 •H ^ 15 o != 10 YELLOW PERCH STA C A A « » idi n STA D D_i Night JZL JZL '363 Day WHITE SUCKER STA C A A [1 STA D Jul Aug Sep Oct Night A A B n Nov n MONTH STA C A C STA D C XZL STA C STA D Jul Aug Sep Oct Nov 25 -20 -15 10 5 25 20 15 10 5 25 20 15 10 5 25 20 15 10 5 FIG. 4. No. of y«llow p«rch and white sucker caught (bars) in gillnets in 1973. A - f i«h caught; B - 21 hr set; C - 19 hr set; triangles indicate temperature. Stipled area Indicates no. of Juveniles; open area indicates adults. -25- 200r 150- 100- u « o m o z (3 (0 150- I 100- 50- •S, o w o OL 160r 120 80 40 A 120- 80- 40- 6- Day RAINBOW SMELT STA C A A ii STA D .^Jil i A Day TROUT- PERCH STA C (S A A STA D A Night STA C ^ A A Night A JIl * m STA D 25 20 15 10 5 CJ 4) H .25 .20 .L5 45 STA C STA D .25 -20 ■ 15 -LO 5 rii -25 -20 -15 A -P-O 5 H May Jun. Jul Aug Sep Oct Nov May Jun Jul Aug Sep Oct Nov MONTH FIG. 5. No. of smelt and trout-perch caught (bare) in trawls in 1973. A - fish caught; B - 21 hr aetj C - 19 hr aet; triangles indicate te«p. Stipled area indicates no. of juveniles; open area indicates adults. -26- 280 Day SPOTTAI L SHINER 1 Hlght 1 STA C STA C 210 - 140 A r A 4J A A A " • A A • g 70 • A A A X A A ■ CO Ek4 n A ^ rh rh r— n r i • O STA D STA D o 210 - c ^ 140 - "^ A ^ r i^ ^ A A -L - 70 A ' I i — r ^ A A 4 - 320 2^0 160 2 80 3 240 «160 80 Day ALEWIFE A A * ^ STA C JHL STA D 1 Night -IE 25 20 15 10 5 25 20 15 10 5 u 0) H STA C STA D May Jun Jul Aug Sep Oct Nov May Jun Jul ■ Aug Sep Oct Nov MONTH FIG. 6. No. of spottall shlnera and alawives caught In trawls in 1973. A - fiah caught; B - 21 hr aet ; C - 19 hr set; triangles Indicate temp. Stipled area indicates no. of Juvenilaa; open area indicates adults. -27- 25 20 15 10 5 25 20 15 10 5 0) H cd a CO fX4 O c cd 00 3 at o (0 o 40 30 20 10 Day 30. 20- IQ. 01 A A 20r 15 10 5 15 10 YELLOW PERCH STA C Night A r^. M A STA D _j Eu asL STA C .15 .20 .15 .10 5 STA D A A A u H .25 -20 15 10 5 Dav Johnny Darter STA C JIZL A A r-i ^ STA D Night STA C * A ^ n 25 20 15 10 5 STA D u A May Jun Jul Aug Sep Oct Nov May Jun. MONTH n i Jul Aug Sep Oct Nov 25 20 15 10 5 FIG. 7. No. of yellow perch and Johnny darters caught in trawls in 1973. A - fiah caught; B - 21 hr set; C - 19 hr set; triangles indicate temp. Stipled area indicates no. of Juveniles; open area Indicates adults. -28- 280 210 140 t 70 o CO . 210 o S 140 as 70 40 30 20 Day to s 10 a ^ CO •H fr fx^. M-l O d 30 25 § 20 10. SPOTTAIL SHINER STA A Night A A STA B A A db Day ALEWIFE Night ■A STA A A A — 5trar STA B A A AAA Jun. Jul Aug Sep Oct Nov Jun MONTH STA A A A STA B i^ STA B 25 20 15 10 5 25 20 15 10 5 u I* A) H STA A 25 20 15 10 5 3 25 20 15 10 5 I Jul Aug Sep Oct Nov FIG. 8. No. of spottail ahlners and alewives caught in seines in 1973. A - fish caught; B - 21 hr set; C - 19 hr set; triangles indicate temp. Stopled area indicates no. of juveniles; open area indicates adults. -29- 20 Day YELLOW PERCH Night STA A STA A 15 • 10 S 5 A A i^ A A A A ^i; A A A - ft, i A •K •'- A A A 1 1 ** •;■; A A A o STA B ^^^ STA B il5 • 3 ^ 10 A A A A &\ A 5 - v.'.' A. - n i * A A Rv3 ^ A AOr JOHNNY DARTER STA A Night 25 20 15 10 5 G H 25 20 15 10 5 u H FIG. 9. No. of yellow perch and Johnny darters caught in seines in 1973. A - fish caught; B « 21 hr sat; C • 19 hr set; triangles indicate temp. StiplBd area indicates no. of Juvaailes; open area indicates adults. -30- 8r 6 . Day RAINBOW SMELT Night X 2 CO o o g 61- 4 - 40 r 30 20 • 1 • STA A STA A A A A A A A A A A - • A * - A A A A A A A A A '.' :i • • STA B STA B A A A A A A A A 1 L i 1 A A A A A A A A A - 4.J J 10 Cfl p^ o O30 a 10 . Day TROUT^PERCH STA A A A A A A STA B A A Night A A Jun Jul Aug Sep i Oct Nov Jun. Jul Aug Sep MONTH 25 20 15 10 5 o 0) H 25 20 15 10 5 STA A A A STA B 25 20 15 10 0) H Oct Nov 25 20 15 10 5 FIG. 10. No. of smelt and trout-perch caught In seines in 1973. A - fish caught; B - 21 hr set; C - 19 hr set: triangles Indicate temperature. Stlpled area indicates no. of Juveniles; open area indicates adults. -31- Day WHITE SUCKER Night u Xi cd u Xi CO •H (X4 o s X 2 ■ 2 - STA A A ^ A ^ A A A A A A A A A A A A A A STA A A ■ A STA B A ^ ^ A A A A A A STA B ^ 4 A • A A A A - Jun Jul Aug Sep Oct Nov Jun Jul Aug Sep Oct MONTH Nov 25 20 15 10 5 25 20 15 10 5 H FIG. 11. No. of white suckers caught in seines in 1973. A « fish caught; B = 21 hr set; C » 19 nr set; triangles indicate temperature. -32- Table 8, A tabulation of the numbers of some less-commonly captured species of fish in the vicinity of the Donald C. Cook nuclear power plant. Location, method, time of capture and water temperature are given, (J means juvenile.) Temp. Collect. Hrs. No. Species Sta. Date Time (c) Method Fish. CauKht Lake D 11 Jun Day 14.0 Trawl . 1 Trout C 11 Jun Day 15.0 Trawl - 1 A 28 Jun Night 17.0* Seine - 1 A 28 Jun Night 17.0 Seine - 8 B 28 Jun Night 17.0 Seine - 5 D 10 Aug Night 16.0 Gillnet 12 1 C 10 Sep Night 17.0 Gillnet 7 Jl D 4 Oct ifk 15.5 Gillnet 21 2 A 1 Nov Night 10.3 Seine - 1 C 1 Nov ** 9.9 Gillnet 24 12 D 1 Nov ** 10.8 Gillnet 24 1 Rainbow A 13 Jul Night 22.5 Seine J2 Trout A 13 Jul Night 22.5 Seine - Jl A 14 Jul Day 23.0 Seine - Jl A 10 Aug Day 16.5 Seine ~ J2 A 10 Aug Day 16.5 Seine - *** 3, Jl A 12 Aug Night 19.5 Seine - Jl A 12 Aug Night 19.5 Seine - J3 B 12 Aug Night 18.3 Seine - Jl A 10 Sep Day 17.0 Seine - Jl A 5 Oct Day 16.2 Seine - Jl A 5 Oct Night 15.0 Seine - Jl A 1 Nov Day 10.2 Seine - J2 A 1 Nov Day 10.2 Seine - 6,J3 A 1 Nov Night 10.3 Seine — Jl * Surface Temperature ** 19-21 hour set *** includes one adult Steelhead ■33- Table 8, cont'd. Total Temp. Collect. Hrs. No. Species Sta. Date Time (C) Method Fish. Caught Lake A 10 Aug Day 16.5 Seine - Jl Herring B 10 Aug Day 16.5 Seine - Jl A 13 Aug Day 20.0 Seine - J2 A 5 Oct Day 16.2 Seine - Jl D 19 Oct Day 11.3 Trawl - 2 C 1 Nov Night 9.9 Trawl - Jl C 2 Nov Day 11.0 Trawl - Jl Bloater D 11 Jun Day 14.0 Trawl — 1 C 11 Jun Day 15.0* Trawl - 1 c 11 Jun Day 15.0 Trawl - 3 D 18 Jul Night 19.0 Trawl - Jl D 18 Jul Night 19.0 Trawl - Jl Gizzard Shad 1 Nov Night 10.3 Seine Longnose Dace -raid Shiner A 13 Jul Night 22.5 Seine B 15 Jul Day 23.4 Seine B 18 Jul Night 21.8 Seine A 10 Aug Day 16.5 Seine A 12 Aug Night 19.5 Seine B 12 Aug Night 18.3 Seine A 7 Sep Night 19.0 Seine A 7 Sep Night 19.0 Seine A 13 Aug Day 20.0 Seine A 7 Sep Night 18.2 Seine B Sep Night 19.2 Seine A '. .-. <- Day 16.2 Seine B 5 Oct Day 16.0 Seine 1 2 1 2 4 1 1 1 3 12 1 1 1 -34- Table 8, cont'd. Total Temp. Collect. Hrs. No. Species Sta. Date Time (C) Method Fish. CauRht Brown A 10 Aug Day 16.5 Seine - Jl Trout D 10 Aug Night 16.0 Gillnet 12 1 D 12 Aug Night 17.0 Gillnet 14.75 2 C 1 Nov ** 9.9 Gillnet 2A 2 Chinook A 28 Jun Night * 17.0 Seine 15 Salmon A 28 Jun Night 17,0* Seine - 7 A 13 Jul Night 22.5 Seine - Jl A 13 Jul Night 22.5 Seine - J4 A 13 Jul Night 22.5 Seine - J 3 D 13 Aug Night 17.0 Gillnet 1A.75 Jl D 5 Oct Night 15.5 Gdllnet 21 J2 C 6 Oct Day 13.2 Gillnet 5 Jl Coho A 28 Jun Night 17.0* Seine 1 Salmon A 28 Jun Night * 17.0 Seine - 3 B 28 Jun Night 17.0* Seine - 3 B 5 Get Day 16.0 Seine ~ Jl D 1 Nov A* 9.9 Gillnet 2A Jl Longnose A 13 Jul Night 22.5 Seine 2 Sucker D 18 Jul Night 19.0 Trawl - 1 D 10 Aug Day 16.2 Gillnet 7 3 C 10 Aug Day 16.0 Gillnet 7 2 C 10 Aug Night 16.5 Gillnet 11.75 3 D 10 Aug Night 16.0 Gillnet 12 4 C 12 Aug Night 17.5 Gillnet 15.25 1 D 12 Aug Night 17.0 Gillnet 14.75 6 D 12 Aug Night 18.0 Trawl - 1 -35- Table 8, cont'd. Total Species Sta. Date Time Temp. Collect. Method Hrs. Fish. No. Caught Longnose Sucker (cont'd.) C C 10 4 Sep Oct Night Night 17.0 15.5 Gillnet Gillnet 7 21 4 2 C 1 Nov ** 9.9 Gillnet 24 1 C 1 Nov ** 10.8 Gillnet 24 15 Carp D 10 Aug Night 16.0 Gillnet 12 1 C 11 Aug Night 16.8 Trawl - 1 C 12 Aug Day 17.5 Trawl - 1 C 12 Aug Night 17.5 Gillnet 15.25 2 D 10 Sep Night 16.5 Gillnet 7 2 D 4 Oct Night 15.5 Gillnet 21 1 A 5 Oct Night 15.0 Seine - 1 D 4 Oct ** 15.5 Gillnet 21 2 Quillback A 13 Jul Night 22.5 Seine - 1 Slimy D 19 Oct Day 11.3 Trawl „ 1 Sculpin D 19 Oct Night 11.1 Trawl - 1 Mottled C 25 May Day 9.8 Trawl _ 1 Sculpin D 11 Jun Day 14.0 Trawl - 1 C 11 Jun Day * 15.0 Trawl - 1 A 28 Jun Night 17.0* Seine - 1 C 9 Sep Night 17.8 Trawl - 2 C 9 Sep Night 17.8 Trawl - 1 D 19 Oct Night 11.1 Trawl - 1 D 19 Oct. Night 11.1 Trawl - 1 D 1 Nov Night 10.8 Trawl - 3 -36- Table 8, contM, Total Temp. Collect. Hrs. No. Species Sta. Date Time (C) Method Fish. CauRht Lake C 9 Sep Day 17.8 Trawl - 2 Chub Channel C 10 Sep Night 17.0 Gillnet 7 1 Catfish D A Oct ** * 15.5 Gillnet 21 1 C 1 Nov Night 9.9 Trawl - 1 Ninespine D 11 Jun Day 14.0 Trawl _ 1 Stickleback C 11 Jun Day * 15.0 Trawl - 2 Lake Sturgeon Northern Pike C 18 Jul Night 21.0 Gillnet 12.25 A 5 Oct Day 16.2 Seine Smallmouth Bass A 28 Jun Night 17.0 Seine Green Sunfish B 5 Oct Day 16.0 Seine -37- Table 9, A compilation of lengths, weights and catch statistics for fish captured in the vicinity of the Donald C. Cook Nuclear Power Plant during 1972. (Depth is in meters.) Speciet! Spottail shiner Collecting method: Gillnet Depth; 6.1 Date & Time Ho. sampled/ Total Mo. Caught Ho. flak Min. Itth(GiO Max. Igth(cm) Mean Igtb(cm) T Mean wgt.(g) 14 Jul 1130 - 1500 14 Jul 1600 - 2030 17-18 Jul 2100 - 1000 18-19 Jul 2045 - 0930 12 Aug 0830 - 1345 12-13 Aug 2000 - 1115 4-5 Oct 1330 - 1030 1-2 Nov 1330 - •330 2/2 17/17 26/258 13/130 3/32 26/147 11/102 9/98 17 26 13 11.0 11.0 11.5 11.5 10.0 12 12.5 14 9.5 4 13.0 7 11.0 11.5 -38- 13,0 14.0 13.0 14.0 12.5 14.5 12.0 13.5 11.5 12.5 12.0 12.5 12.2 12.8 11.2 13.5 10.8 13.2 11.2 12.0 10.0 18.8 19.2 19.2 20.0 21.5 18.1 25.0 18.6 25.0 Table 9, cont'd. Species: Spottail shiner Collecting method: Glllnet Depth; 9.1 Date & Time 10-11 Aug 2030 - 0830 12 Aug 08A0 - 1330 12-13 Aug 2015 - 1100 8 Sep 1130 - 1600 4-5 Oct 1345 - 1045 1-2 Nov 1330 - 0830 Ho. sampled/ Total Mo. Caught 9/81 7/7 5/38 1/1 5/51 7/60 No. fish 2 3 1 6 Mln. Igth(cm) 11.0 11.0 12.0 12.5 13.0 11.0 14.0 11.0 Max. Igth(cm) 14.0 12.5 14.0 12.5 14.0 12.0 14.0 12.5 Mean Igth(cm) 12.5 11.8 13.0 12.5 13.5 11.5 14.0 11.8 Mean wgt. (g) 18.9 17.6 26.0 16.0 29.0 16.7 25.0 20.0 -39- Table 9, cont'd. Date & Tla« No. santpled/ Total No. Caught No. fish Mln. Igth(cm) Max. lgth(c«) Mean Igth(cm) Mean wgt.(g) 11 Jun 1606 - 1611 34/34 21 13 10.0 5.0 13.5 6.5 11.8 5.8 19.1 1.5 11 Jun 1611 - 1616 49/49 40 9 10.7 5.0 14.6 7.5 12.7 6.2 18.8 1.8 15 Jul 1327 - 1337 14/14 14 10.0 13.0 11.5 16.4 18 Jul 2050 - 2100 28/28 28 8.5 13.5 10.8 15.7 18 Jul 2115 - 2125 27/27 27 10.0 13.0 11.5 15.7 11 Aug 2215 - 2225 8/76 8 14.5 16.5 15.5 25.4 12 Aug 1409 - 1419 6/47 6 7.0 11.0 9.0 8.3 12 Aug 1431 - 1441 18/18 12 6 10.0 6.5 12.0 8.5 11.0 7.5 11.3 6.2 9 Sep 1430 - 1445 5/49 1 4 12.0 8.5 12.0 10.0 12.0 9.2 15.0 7.3 9 Sep 1445 - 1500 3/3 2 1 11.0 6.5 13.5 6.5 12.2 6.5 17.0 3.0 9 Sep 2044 - 2054 2/2 2 12.0 12.5 12.2 17.0 9 Sep 2107 - 2117 1/1 1 12.0 12.0 12.0 19.0 19 Oct 1410 - 1420 10/^.-4 1 2 4 2 14.5 8.5 4.5 3.0 14.5 8.5 4.5 3.0 14.5 8.5 4.5 3.0 30.0 5.5 1.0 0.5 -40- Table 9, cont'd. Species ; Spottall shiner Collecting method: Trawl Depth ; 6,1 Dete & Time 19 Oct 1431 - 1441 19 Oct 1903 - 1913 19 Oct 1924 - 1934 1 Nov 2100 - 2110 1 Nov 2123 - 2133 No. sampled/ Total No. Caught 15/154 22/229 27/269 8/83 6/52 No. fish 2 1 2 8 1 2 4 5 9 2 4 6 3 10 4 3 5 4 2 Mln. Igth(cm) 11.5 10.0 6.5 4.0 3.0 13.0 10.0 8.0 4.0 3.0 12.5 9.5 7.5 5.0 3.0 13.0 9.0 10.5 5.5 Max. Igth(cm) 13.5 10.0 8.0 5.0 3.0 13.0 12.0 9.0 5.5 3.5 14.5 11.5 8.5 5.5 4.0 13.0 11.0 12.5 6.5 Mean Igth(cm) 12.5 10.0 7.2 4.5 3.0 13.0 11.0 8.5 4.8 3.2 13.5 25.3 10.5 13.3 8.0 4.7 5.2 1.4 3.5 0.8 13.0 25.0 10.0 10.0 11.5 23.8 6.0 2.0 Mean wgt. (g) 20.0 10.0 4.0 1.0 0.5 20.0 15.0 7.0 1.7 0.5 -41- Table 9, cont'd. Sp«c1m; Spottall shiner Collecting method: Trawl Depth; 9.1 Date & Time No. saiiipled/ Total No. Caught No. fish Mln. IgthCcs) Max. Igth(ca) Mean Igth(cm) Mean wgt.(g) 11 Jun 1710 - 1715 11 Jun 1715 - 1720 17 Jul 1A15 - 1425 18 Jul 2137 - 2147 18 Jul 2159 - 2209 12 Aug 1451 - 1501 12 Aug 1513 - 1523 12 Aug 2116 - 2126 12 Aug 2139 - 2149 9 Sep 1400 - 1415 9 Sep 2^27 - 2137 19 Oct 1320 - 1330 14/14 7/7 1/1 27/27 35/35 6/6 5/5 2/2 3/3 2/19 2/2 14/161 10 4 4 3 27 35 1 4 1 1 10.0 A. 5 11.5 4.5 11.0 10.5 9.5 7.0 12.0 6.5 10.5 12.0 14.0 10.5 11.5 2 14.0 4 10.5 5 7.0 2 5.0 1 3.0 13.0 6.0 13.8 5.5 11.0 13.0 12.5 11.0 12.0 8.0 11.5 13.5 14.0 10.5 11.5 14.0 12.0 9.0 6.0 3.0 11.5 5.2 12.7 5.0 11.0 12.8 11.0 9.0 12.0 7.2 11.0 12.8 14.0 10.5 11.5 14.0 11.2 8.0 5.5 3.0 18.4 1.6 20.1 1.2 14.0 18.2 15.7 6.7 20.0 3.3 13.5 19.0 28.0 10.0 13.0 29.0 14.8 5.8 2.0 0.5 -42- Table 9, cont'd. Species ; Spottall shiner Collecting method: Trawl Depth; 9.1 Date & No. sampled/ No. Mln. Max. Mean Mean Time Total No. Caught fish Igth(cm) Igth(cm) Igth(cm) wgt.(g) 19 Oct 10/100 2 12.0 12.0 12.0 15.0 13A4 - 5 9.0 10.5 9.8 7.0 1354 1 8.0 8.0 8.0 5.0 2 5.0 5.5 5.2 1.5 19 Oct 19/182 5 11.0 12.5 11.8 22.0 1944 - 12 8.5 10.5 9.5 9.6 1954 2 3.0 4.5 3.8 0.5 19 Oct 14/143 4 12.0 14.0 13.0 27.5 2008 - 4 9.5 11.0 10.2 12.5 2018 5 8.0 9.0 8.5 6.0 1 5.0 5.0 5.0 1.0 1 Nov 10/103 7 11.0 13.0 12.0 21.4 2011 - 2 9.0 9.0 9.0 8.0 2021 1 8.0 8.0 8.0 5.0 1 Nov 5/58 4 10.5 11.5 11.0 15.0 2037 - 1 8.0 8.0 8.0 5.0 2047 2 Nov 1/1 1 4.0 4.0 4.0 0.5 0922 - 0932 2 Nov 1/1 1 11. 11.0 11.0 14.0 0944 - 0954 ■ -43- Table 9, cont'd. Sp«ela8 ; Spottall shiner Collecting method; Seine Depth; - 1'5 Date & Tlae No. sampled/ Total No. Caught No. fish 28 Jun 2030 - 2050 28 Jun 2050 - 2110 28 Jun 2200 - 2230 13 Jul 2100 - 2115 13 Jul 2115 - 2120 13 Jul 2130 - 2135 14 Jul 1320 - 1330 14 Jul 1330 - 1341 14 Jul 1347 - 1355 15 Jul 1355 - 1405 15 Jul 1407 - 1412 15 Jul 1417 - 1421 8/18 15/69 50/264 119/119 307/307 143/143 441/441 214/214 835/835 219/219 38/38 36/37 2 4 2 5 5 5 10 10 10 20 17 8 18 76 17 12 46 232 20 6 24 93 16 45 380 25 31 158 20 815 5 20 194 7 31 1 35 Mln. Igth(cm) 13.0 9.0 7.0 11.0 8.5 3.5 11.0 10.0 8.5 4.0 10.5 8.5 7.0 4.5 10.0 8.5 7.0 4.0 11.0 8.5 6.5 4.0 8.5 7.0 4.5 9.5 , 7.0 4.5 8.5 4.0 9.5 7.5' 4.5 7.0 4.5 10.0 4.0 Max. Igth(cm) 13.5 11.0 9.0 13.5 10.5 8.0 14.0 11.5 12.0 8.5 13.5 10.0 8.0 6.5 13.0 9.5 7.5 6.5 13.5 10.5 8.0 7.0 13.0 8.5 6.5 13.5 9.5 7.0 13.0 8.5 11.0 9.5 7.5 7.5 7.0 10.0 7.0 Mean Igth(cm) 13.2 10.0 8.0 12.2 9.5 5.8 12.5 10.8 10.2 4.2 12.0 9.2 7.5 5.5 11.5 9.0 7.2 5.2 12.2 9.5 7.8 5.5 10.8 7.8 5.5 11.5 8.2 5.8 10.8 6.2 10.2 8.5 6.0 7.2 5.8 10.0 5.5 Mean wgt.(g) 45.0 28.8 10.0 44.0 34.0 16.0 40.0 30.0 13.5 17.7 12.5 5.6 2.0 17.1 6.7 3.7 1.9 20.3 13.3 4.6 1.5 17.5 4.4 1.3 12.4 5.2 2.0 14.5 2.2 12.0 5.5 2.1 5.0 1.8 10.0 1.7 Table 9, cont'd. Sp«clM :_ Spottail shiner Collecting method • : Seine Depth :_0 - 1.5 Date & Time Mo. sampled/ Total No. Caught No. fish Mln. Igth(cm) Max. Igth(cm) Mean Igth(cm) Mean wgt.(g) 18 Jul 35/35 35 6.5 13.0 9.8 12.0 2130 - 2145 6 Aug 2050 - 16/165 6 10 10.0 6.5 12.0 8.5 11.0 7.5 15.0 4.0 2057 6 Aug 2102 - 31/314 11 20 8.5 4.5 12.0 8.0 10.2 5.8 11.0 4.0 2108 6 Aug 2125 - 15/152 11 4 10.5 8.0 13.0 8.5 11.8 8.2 15.5 5.0 2132 6 Aug 2140 - 16/163 3 13 15.0 7.5 16.0 9.5 15.5 8.5 26.7 6.2 2145 6 Aug 2145 - 6/62 3 3 8.5 6.0 10.5 8.0 9.5 7.0 10.0 3.3 2150 12 Aug 2030 - 16/168 11 5 9.5 6.0 11.5 8.0 10.5 7.0 13.6 6.0 2040 12 Aug 2050 - 2100 20/190 8 7 5 10.0 6.5 6.0 12.0 8.5 6.5 11.0 7.5 6.2 13.8 5.7 2.0 12 Aug 2110 - 15/151 8 7 8.5 6.0 13.0 8.0 10.8 7.0 13.8 4.3 2120 12 Aug 2135 - 19/177 8 11 9.0 4.0 12.5 7.5 10.8 5.8 16.3 3.6 2145 12 Aug 2155 - 9/73 5 4 9.0 5.5 12.0 7.0 10.5 6.2 14.0 5.0 2205 ' 13 Aug 1535 - 1545 15/1500 3 5 7 9.0 7.5 5.5 10.0 .8.0 7.0 9.5 7.8 6.2 9.0 5.4 2.3 -45- Table 9, cont'd. Sp«eie«t Spottall shiner Collecting method: Seine Depth; Q - 1.5 Date & Tlae No. sampled/ Total No. Caught No. £l8h Mln. Igth(ca) Max. Igth(ca) Mean Igth(cm) Mean wgt.(g) 13 Aug 1550 - 1600 13 Aug 1605 - 1615 13 Aug 1625 - 1635 7 Sep 2053 - 2100 7 Sep 2105 - 2115 7 Sep 2200 - 2205 10 Sep 1A23 - 1429 10 Sep 1435 - 1440 10 Sep 1447 - 1453 10 Sep 1510 - 1516 10 Sep 1521 - 1526 5 Oct 1630 - 1642 5 Oct 1650 - 1710 7/7 13/13 9/97 1/1 1/1 1/1 5/5 2/2 1/1 4/4 11/11 1/1 2/2 1 6 5 8 2 7 1 4 2 2 1 6 3 1 8.5 5.0 7.0 5.5 11.0 7.0 8.0 10.5 11.0 13.5 3.5 5.0 6.5 9.5 7.0 11.0 8.0 7.0 5.5 11.0 8.0 8.5 6.5 9.5 6.5 12.0 8.5 8.0 10.5 11.0 13.5 5.0 5.0 6.5 10.5 7.5 11.0 9.0 7.5 5.5 11.0 10.5 8.5 5.8 8.2 6.0 11.5 7.8 8.0 10.5 11.0 13.5 4.2 5.0 6.5 10. 7.2 11.0 8.5 7.2 5.5 11.0 9.2 3.0 2.0 3.0 2.6 15.5 4.6 5.0 9.0 16.0 19.0 1.3 1.0 3.0 10.0 3.5 9.0 5.2 2.3 1.0 12.0 7.5 -46- Table 9, cont'd, Sp«cles; Spottail shiner Collecting method: Seine Depth; n - i.s Date & Time 5 Oct 1720 - 1730 5 Oct 2115 - 2145 5 Oct 2215 - 2240 1 Nov 2020 - 2040 1 Nov 2040 - 2110 No. sampled/ Total No. Caught 8/8 15/154 15/150 1/1 1/1 No. fish 8 5 10.0 9 8.0 1 5.0 4 11.5 7 9.0 4 4.5 Min. Igth(cm) 8.5 12.0 8.0 Max. Igth(cm) 11.5 12.0 9.0 5.0 13.5 10.0 5.0 12.0 8.0 Mean Igth(cm) 10.0 11.0 19.0 8.5 6.7 5.0 1.0 12.5 23.8 9.5 10.7 4.8 1.0 12.0 8.0 Mean wgt.(g) 12.5 18.0 4.0 -47- Table 9, cont'd. Sp^clftS ; Alevlfe Collecting method: Gillnet Depth : 6.1 Date & TlB« No. santplftd/ Total No. Caught No. fish Mln. Igth(cm) Max. Igth(cm) Mean Igth(ciii) Mean wgt.(g) 25-26 May 1800 - 0845 1/1 1 17.5 17.5 17.5 50.0 14 Jul 1130 - 1500 6/6 6 15.0 20.0 17.5 35.8 14 Jul 1600 - 2030 17/17 17 15.0 18.0 16.5 38.8 15 Jul 1230 - 1600 2/2 2 16.0 19^.5 17.8 35.0 17-18 Jul 2100 - 1000 46/287 3 43 20.0 13.0 22.5 19.0 21.2 16.0 71.7 37.1 18-19 Jul 2045 - 0930 49/322 49 14.0 20.5 17.2 40.7 12 Aug 0830 - 1345 13/115 13 15.0 19.0 17.0 38.3 12-13 Aug 2000 - 1115 40/225 18 18 4 16.0 14.0 12.0 18.5 15.0 13.5 17.2 14.5 12.8 41.3 31.4 21.3 4-5 Oct 1330 - 1030 7/7 1 6 19.5 14.0 19.5 17.0 19.5 15.5 80.0 35.8 6 Oct ^SOO - 1300 3/3 3 1 15.5 17.5 16.5 40.0 1-2 Nov 1330 - 0830 4/23 3 1 17.0 15.0 18.5 15.0 17.8 15.0 60.0 40.0 -48- Table 9 , cont'd. Sp«cl«s i , Alewlfe Collectlns aathod: Glllnet Dapth: 9.1 Date 6 Time No. s«Bpl«d/ Total No. Caught No. fish Mln. IgthCcm) Max. Igth(cm) Mean Igth(CB) Mean wgt.(g) 11-12 Jun 1415 - 0900 15/75 6 6 3 17.5 16.0 15.0 21.0 18.0 16.5 19.3 17.0 15.8 57.5 42.2 27.0 11-12 Jun 1415 - 0900 18/18 18 16.5 19.0 17.8 43.8 13 Jun 0915 - 1545 4/4 4 18.0 21.3 20.2 55.0 13 Jun 0915 - 1545 2/2 2 18.2 18.7 18.4 40.0 15 Jul 1230 - 1600 1/1 1 17.0 17.0 17.0 30.0 17-18 Jul 2050 - 1000 18/18 18 15.0 19.0 17.0 40.6 18-19 Jul 2045 - 0930 15/15 7 8 18.0 14.0 20.0 17.5 19.0 15.8 51.4 40.0 10-11 Aug 2030 - 0830 56/256 5 51 18.0 12.0 20.0 17.5 19.0 14.8 53.0 31.6 12 Aug 0840 - 1330 4/42 4 14.5 17.0 15.8 37.5 12-13 Aug 2015 - 1100 46/213 46 13.0 19.0 16.0 37.6 4-5 Oct 1345 - 1045 9/9 1 8 19.0 15.5 19.0 17.5 19.0 16.5 50.0 43.8 -49- Table 9, cont'd, SpttclM t Alewlfe Collttctlng SAthod: Glllnet D«pth; 9.1 Tla« 1-2 Nov 1330 - 0830 No. saaplad/ Total No. Caught No. fish Mln. IgthCcm) 17.0 Max. Igth(cn) 17,0 Maan Igth(cm) 17.0 Naan vgt.(g) 45.0 -50- Table 9, cont'd. Date & Tim* Mo. saaplad/ Total No. Caught Mo. flail Mln. Igth(cm) Max. Igth(cB) Maan Igth(cm) Maan vgt.Cg) 28 Jun 9/9 9 14.5 19.5 16.5 28.8 2030 - 2050 28 Jun 2050 - 11/11 10 1 13.0 7.5 17.0 7.5 15.0 7.5 27.0 3.0 2110 28 Jun 15/26 15 14.5 19.0 16.8 61.3 2200 - 2230 13 Jul 2100 - 37/37 7 30 14.0 6.5 19.0 9.0 16.5 7.7 30.7 6.7 2115 13 Jul 2115 - 92/92 2 90 14.0 7.0 18.0 10.5 16.0 8.8 30.0 5.7 2120 13 Jul 2130 - 32/32 3 29 16.5 7.0 17.0 11.0 16.8 9.0 35.0 6.9 2135 lA Jul 56/56 56 6.5 10.5 8.5 5.4 1320 - 1330 14 Jul 26/26 26 7.0 9.0 8.0 4.4 1330 - 1341 14 Jul 33/33 33 7.0 9.5 8.2 5.5 1347 - 1355 15 Jul 7/7 7 8.0 10.0 9.0 7.1 1355 - 1405 15 Jul 1/1 1 8.5 8.5 8.5 6.0 1407 - 1412 15 Jul 25/25 25 7.0 9.0 8.0 5.2 1417 - 1421 18 Jul 2130 - 26/26 19 7 12.5 .6.5 20.0 11.0 15.8 8.8 28.9 6.4 2145 -51- Table 9, cont'd, Sp«cl«s t Alewife Collecting nftthod: Seine Depth; o - 1.5 Dete & Tlae No. sampled/ Totml No. Caught No. fish Mln. Igth(coi) Max. Igth(cm) Mean IgthCcm) Mean wgt.(g) 6 Aug 2040 - 2047 6 Aug 2050 - 2057 6 Aug 2102 - 2108 6 Aug 2125 - 2132 6 Aug 2140 - 2145 6 Aug 2145 - 2150 12 Aug 2050 - 2100 12 Aug 2135 - 2145 12 Aug 2155 - 2205 13 Aug 1535 - 1545 7 Sep 2105 - 2115 7 Sep 2130 - 2140 10 Sep 1435 - 1440 31/31 5/5 1/1 4/4 17/17 22/22 1/1 5/5 7/7 1/1 3/3 1/1 1/1 2 18 11 3 1 10 7 4 18 13.5 8.5 7.0 8.0 8.0 15.0 10.5 10.5 7.0 14.0 8.0 8.5 15.0 3.5 3.5 8.0 14.0 18.5 6.5 17.5 10.5 8.5 10.0 8.0 17.5 10.5 14.0 9.5 17.0 10.5 8.5 16.0 4.0 4.5 8.0 17.0 18.5 6.5 15.5 9.5 7.8 9.0 8.0 16.2 10.5 12.2 8.2 15.5 9.2 8.5 15.5 3.8 4.0 8.0 15.5 18.5 6.5 30.0 7.8 3.6 7.0 2.5 33.3 10.0 14.0 7.1 23.8 7.8 4.0 30.0 0.3 0.6 4.0 30.0 50.0 3.0 -52- Table 9, cont'd. Spaclsa ; Alewlfe Collecting method: Seine Depth; - 1.5 Date 6 Time 10 Sep 1510 - 1516 5 Oct 2115 - 2145 5 Oct 2215 - 2240 No. sampled/ Total No. Caught 2/2 12/12 9/9 No. fish 12 2 1 6 Mln. Igth(cm) 6.5 6.5 18.0 15.5 4.5 Max. Igth(cm) 7.0 8.0 20.0 15.5 6.0 Mean Igth(cm) 6.8 7.2 19.0 15.5 5.2 Mean wgt.(g) 3.0 2.5 80.0 40.0 1.5 -53- Table 9, cont'd. 8p«cl«at_ Alewlfe Collactlng ottthod : Trawl Depth: 6.1 Dace & Tla* Mo. sampled/ Total No. Caught . No. fish Mln. Igth(cn) Max. Igth(cm) Mean Igth(cm) Mean wgt. (g) 24 May 2/2 2 14.5 16.0 15.2 25.0 1430 - 1440 24 May 1/1 1 16.0 16.0 16.0 20.0 1445 - 1455 24 May 2/2 2 14.5 18.5 16.5 30.0 1510 - 1540 25 May 15/87 15 11.0 19.5 15.2 25.7 11 Jun 1606 - 38/367 25 13 15.5 8.5 18.5 15.5 17.0 12.0 39.0 26.9 1611 11 Jun 1611 - 1616 26/223 19 4 3 15.6 13.3 7.8 19.0 14.8 12.5 16.2 14.1 10.2 39.2 19.5 10.0 15 Jul 2/2 2 16.0 16.5 16.2 30.0 1327 - 1337 18 Jul 3/34 3 15.0 17.5 16.8 51.7 2050 - 2100 18 Jul 9/89 9 13.0 19.5 16.2 35.6 2115 - 2125 12 Aug 13/13 13 14.0 17.5 15.8 31.5 1409 - 1419 12 Aug 1431 - 11/11 6 5 17.0 12.5 18.5 14.0 17.8 13.2 45.8 17.8 1441 9 Sep 1430 - 1445 68/567 1 55 12 16.5 5.0 2.5 16.5 7.5 4.0 16.5 6.2 3.2 40.0 2.2 0.2 9 Sep 1445 - 1500 : '1 1 1 7 17.0 8.0 .5.5 17.0 8.0 6.5 17.0 8.0 6.0 40.0 6,0 2.0 -54- Table 9, cont'd. Spedaa ; Alewif e Collecting method: Trawl Depth :__£J_ Date & No. aampled/ No. Mln. Max. Mean Mean Time Total No. Caught fiah Igth(an) Igth(cm) Igth(cm) wgt. (g) 9 Sep 11/11 1 6.5 6.5 6.5 3.0 2044 - 7 4.0 5.0 4.5 0.9 2054 3 2.5 3.5 3.0 0.3 9 Sep 14/14 1 18.5 18.5 18.5 40.0 2107 - 1 6.5 6.5 6.5 3.0 2117 10 4.0 5.0 4.5 0.9 2 2.5 3.5 3.0 0.5 19 Oct 2/2 2 4.0 4.5 4.2 0.8 1410 - 1420 19 Oct 1/1 1 4.0 4.0 4.0 1.0 1431 - 1441 19 Oct 3/38 3 4.5 5.0 4.8 1.3 1903 - 1913 19 Oct 40/40 40 3.0 4.5 3.8 0.5 1924 - 1934 2 Nov 12/12 2 16.5 18.0 17.2 37.5 1008 - 10 5.5 6.0 5.8 1.1 1018 2 Nov 1/1 1 15.0 15.0 15.0 40.0 1028 - 1038 -55- Table 9, cont'd. SpAclas :_ Alewife Collecting method 1: Trawl Depth: 9.1 Date & Tlm« No. sampled/ Total No. Caught No. fish Mln. Igth(cm) Max. Igth(cm) Mean Igth(cm) Mean wgt. (g) 11 Jun 1710 - 1715 15/149 5 5 3 2 16,5 15.0 12.0 9.5 21.5 16.5 15.0 10.5 19.0 15.8 13.5 10.0 45.7 33.5 28.6 6.5 11 Jun 1715 - 1720 28/192 10 9 9 16.0 14.0 8.5 19.5 17.0 13.5 17.8 15.5 11.0 45.0 33.3 16.7 17 Jul 1415 - 1425 6/6 1 5 20.0 16.0 20.0 17.0 20.0 16.5 - 17 Jul 1445 - 1455 3/3 2 1 16.5 14.5 16.5 14.5 16.5 14.5 35.0 25.0 18 Jul 2137 - 2147 5/5 5 14.0 19.0 16.5 36.0 18 Jul 2159 - 2209 12/12 12 15.0 18.0 16.5 34.2 12 Aug 1451 - 1501 3/3 3 15.0 17.0 16.0 27.2 12 Aug 1513 - 1523 2/2 2 15.0 18.5 16.8 32.5 12 Aug 2116 - 2126 7/7 7 14.5 17.0 15.8 32.9 12 Aug 2139 - 2149 5/5 5 13.5 16.5 15.0 30.0 9 Sep 1400 - 1415 43/418 2 41 15.0 5.5 19.5 7.5 17.2 6.5 45.0 2.9 9 Sep 1415 - 1430 22/?-'"' 1 21 15.0 6.0 15.0 7.5 15.0 6.8 30.0 3.3 9 Sep 2127 - 2137 16/16 6 10 .5.5 3.0 5.5 4.0 5.5 3.5 1.0 0.5 ^=16« Table 9, cont'd. SpttClM ; Alewlfe Collecting method: Trawl Depth: 9.1 Date & Time 9 Sep 2150 - 2200 19 Oct 1320 - 1330 19 Oct 1344 - 1354 19 Oct 1944 - 1954 19 Oct 2008 - 2018 2 Nov 0944 - 0954 No. sampled/ Total No. Caught 10/10 12/12 37/329 17/17 20/20 12/12 No. fish 2 1 7 2 10 5 32 1 16 13 7 2 1 9 Mln. Igth(aii) 16.0 7.0 4.0 16.0 4.0 17.0 5.0 15.0 3.0 3.5 3.0 16.0 8.0 4.5 Max. Igth(cm) 16.5 7.0 5.0 18.0 6.5 18.5 6.5 15.0 4.5 5.0 3.5 18.0 8.0 5.5 Mean Igth(cm) Mean wgt.(g) 16.2 7.0 4.5 17.0 5.2 17.8 5.8 15.0 3.8 4.2 3.2 17.0 8.0 5.0 35.0 4.0 0.7 42.5 1.6 49.0 1.7 35.0 0.5 0.6 0.3 40.0 4.0 1.0 S7 Table 9, cont'd. Rainbow smelt Spttdss : Collecting method: Glllnet Depth; 6.1 Date & Tlae 10 Aug 0930 - 1630 12-13 Aug 2000 - 1115 10 Sep 1050 - 1600 10-11 Sep 1800 - 1000 4-5 Oct 1330 - 1030 1-2 Nov 1330 - 0830 No. sanqpled/ Total No. Caught 1/1 4/4 2/2 11/11 5/18 No. fish 2 2 7 4 Mln. IgthCcm) 9.5 19.0 16.5 13.0 17.0 17.0 14.5 22.0 19.0 Max. Igth(cm) 9.5 19.0 17.0 14.0 19.0 19.0 16.5 22.5 20.0 Mean Igth(cm) 9.5 19.0 16.8 13.5 18.0 18.0 15.5 22.2 19.5 Mean wgt. (g) 5.0 40.0 30.0 16.5 42.5 46.4 30.8 82.5 55.0 -58- Table 9 , cont'd. Rainbow smelt Spedaa : Collecting method: Glllnet Depth; 9.1 Date & Tine 11-12 Jun 1415 - 0900 10 Sep 1105 - 1600 10-11 Sep 1800 - 1000 4-5 Oct 1345 - 1045 6 Oct 0815 - 1300 1-2 Nov 1330 - 0830 No. sampled/ Total No. Caught 16/16 5/5 5/5 8/41 1/1 3/5 No. £l8h 16 3 2 1 7 Mln. Igth(cm) 11,0 17.5 15.5 17.0 22.0 15.5 17.0 18.0 Max. Igth(cm) 16.0 18.0 16.0 19.0 22.0 19.5 17.0 20.5 Mean Igth(cm) 13.5 17.8 15.8 18.0 22.0 17.5 17.0 19.2 Mean wgt. (g) 15.9 33.3 20.0 37.0 70.0 41.4 40.0 63.3 -59- Table 9, cont'd. Spccl«st_ KainDow smelt Collecting method: Trawl Depth ;__^ 6.1 Date & Tla« No. santpled/ Total No. Caught No. fish Mln. Igth(cjn) Max. Igth(cm) Mean Igth(cin) Mean wgt. (g) 24 May 1430 - 1440 15/102 15 — — 7.0 10.9 24 May 1445 - 1455 9/9 9 — — 6.4 1.1 24 May 1510 - 1520 3/3 3 6.0 7.0 6.2 1.0 25 May 3/3 3 5.0 6.5 5.6 1.0 11 Jun 1606 - 1616 173/173 22 28 123 11.0 8.5 4.5 14.5 10.5 8.0 12.8 9.5 5.8 14.8 4.6 1.7 11 Jun 1626 - 1636 189/189 33 156 11.0 5.7 14.5 9.3 12.8 7.5 10.6 1.2 11 Aug 2215 - 2225 2/2 2 8.0 10.0 9.0 5.0 12 Aug 1431 - 1441 1/1 1 6.5 6.5 6.5 1.0 9 Sep 1430 - 1440 8/8 1 2 5 14.0 11.0 9.0 14.0 11.0 9.5 14.0 11.0 9.2 17.0 7.5 4.8 9 Sep 2044 - 2054 104/104 2 102 9.0 3.5 10.5 5.5 9.8 4.5 6.0 0.4 9 Sep 2107 - 2117 42/42 42 3.5 4.5 4.0 0.5 ^y Oct 1410 - 1420 69/69 1 1 1 66 14.5 11.0 8.5 3.0 14.5 11.0 8.5 5.0 14.5 11.0 8.5 4.0 32.0 9.0 5.0 0.6 19 Oct 1431 - 1441 71/7 71 3.5 6.0 4.8 0.6 -60- Table 9, cont'd. Species ; Rainbow smelt Collecting method: Trawl Depth; 6,1 Date & Time 19 Oct 1903 - 1913 19 Oct 1924 - 193A 2 Nov 1008 - 1018 2 Nov 1028 - 1038 No. sampled/ Total No. Caught 19/19 37/37 7/7 2/2 No. fish 19 37 5 2 Min. Igth(cm) 4.0 4.0 17.5 13.0 9.0 Max. Igth(cm) 5.5 6.0 18.0 14.0 11.5 Mean Igth(cm) 4.8 5.0 17.8 13.5 10.2 Mean wgt. (g) 0.3 0.6 42.0 27.5 8.5 -61- Table 9, cont'd. Sped—: Rainbow smelt Collecting nethod: Trawl Depth; 9.1 Date & Time 11 Jun 1710 - 1720 11 Jun 1730 - 1740 18 Jul 2137 - 2147 12 Aug 1451 - 1501 12 Aug 1513 - 1523 12 Aug 2139 - 2149 9 Sep 1400 - 1415 9 Sep 1415 - 1425 9 Sep 2127 - 2137 9 Sep 19 Oct 1320 - 1330 19 Oct 1344 - 1354 No. sampled/ Total No. Caught 157/157 223/223 3/3 4/4 2/2 2/2 26/26 2/2 20/20 6/6 30/30 118/118 No. fish 4 3 15 35 100 5 8 9 201 Min. Igth(an) 1 3 3 8 15 20 12.5 10.0 8.0 7.0 5.5 13.5 10.5 8.5 5.5 6.0 12.0 7.5 8.0 8.0 14.0 10.0 7.5 12.0 3.5 4.0 2 18.0 3 13.0 3 10.5 22 4.0 1 16.5 2 1'2.0 3 10.0 112 4.0 Max. Igth(cm) 14.5 10.5 9.5 7.5 7.0 16.5 13.0 10.0 9.0 8.0 12.0 8.5 8.5 10.0 16.0 12.0 9.0 12.5 4.5 4.5 21.0 14.5 11.5 6.5 16.5 13.5 10.0 6.0 Mean Igth(cm) 13.5 10.2 8.8 7.2 6.2 15.0 12.2 9.2 7.2 7.0 12.0 8.0 8.2 9.0 15.0 11.0 8.2 12.2 4.0 4.2 Mean wgt.(g) 15.0 8.7 3.7 2.1 1.5 30.0 12.5 7.8 1.9 2.8 9.5 2.8 3.5 4.0 23.3 10.0 4.7 11.5 0.4 0.3 19.5 47.5 13.8 21.3 11.0 8.3 5.2 1.5 16.5 35.0 12.8 13.5 10.0 6.0 5.0 0.7 -62- Table 9, cont'd. Rainbow smelt Species : Collecting method: Trawl Depth; 9.1 Date & Time 19 Oct 1944 - 1954 19 Oct 2008 - 2018 2 Nov 0922 - 0932 2 Nov 0944 - 0954 No. aampled/ Total No. Caught 19/19 12/12 15/15 36/36 No. fish 19 12 Mln. Igth(cm) 4.5 4.0 1 12.5 14 5.0 1 13.0 35 4.5 Max. Igth(ctii) 6.0 6.0 12.5 7.0 13.0 6.0 Mean Igth(cm) 5.2 5.0 12.5 6.0 13.0 5.2 Mean wgt.(g) 0.7 0.7 12,0 1.3 12.0 0.8 -63- Table 9, cont'd. Sped—: Rainbow smelt Collecting method: ^^^"^ Depth; Q - ^♦^ Date & Time No. sampled/ Total No. Caught No. fish Min. Igth(cm) Mttx. Igth(cm) Mean Igth(cm) Mean wgt. (g) 13 Jul 2115 - 2120 6 Aug 2125 - 2132 7 Sep 2130 - 2140 7 Sep 2200 - 2205 5 Oct 2115 - 2145 1/1 2/2 1/1 1/1 18/18 5 Oct 3/3 2215 - 2240 1 Nov 4/4 2000 - 2020 1 Nov 3/3 2020 - 2040 1 Nov 1/1 2040 - 2110 -4 7 6 1 2 2 1 2 6.0 11.0 9.5 10.5 16.0 13.0 11.5 8.5 16.5 16.5 13.5 18. J 14.0 20.5 6.0 13.5 9.5 10.5 18.0 15.0 12.0 8.5 18.0 19.0 15.0 18.5 15.0 20.5 6.0 12.2 9.5 10.5 17.0 14.0 11.8 8.5 17.2 17.2 41.5 14.2 21.5 18.5 50.0 14.5 22.5 20.5 1.5 12.5 5.0 9.0 41.3 24.3 14.2 4.0 41.7 65.0 -64- Table 9, cont'd. Species : Yellow Perch Collecting method: Glllnet Depth t 6.1 Date & No. sampled/ No. Min. Max. Mean Mean Time Total No. Caught fish Igth(aa) Igth(cm) Igth(cm) wgt. (g) 14 Jul 35/35 3 28.0 29.0 28.5 391.7 1130 - 5 24.0 26.5 25.3 222.0 1500 13 20.0 23.0 21.5 126.9 13 15.0 18.5 16.8 60.8 1 13.5 13.5 13.5 35.0 14 Jul 38/38 3 28.0 30.5 29.3 363.3 1600 - 8 24.0 26.0 25.0 207.5 2030 14 20.0 23.5 21.8 142.5 13 15.0 19.5 17.2 66.9 15 Jul 53/53 3 27.0 30.5 28.8 356.7 1230 - 4 25.5 26.5 26.0 285.0 1600 13 20.0 24.0 22.0 149.2 24 16.0 19.5 17.8 69.4 9 14.0 15.5 14.8 41.7 17 Jul 96/96 6 30.0 31.5 30.8 448.3 2100 - 5 27.5 29.0 28.2 325.0 1000 11 24.0 26.0 25.0 219.6 38 20.0 23.5 21.8 143.4 34 15.0 19.5 17.2 52.4 2 12.0 14.5 13.2 22.5 18-19 39/107 3 30.0 32.0 31.0 485.0 Jul 5 28.0 29.0 28.5 365.0 2045 - 3 24.5 26.5 25.5 250.0 0930 17 20.0 23.5 21.8 133.8 11 16.0 19.5 17.8 66.4 10 Aug 48/48 8 30.0 32.5 31.2 467.1 0930 - 8 28.0 29.5 28.8 398.1 1630 10 23.0 26.5 24.8 227.0 4 18.0 20.0 19.0 77.5 8 13.0 16.5 14.8 37.5 10 10.5 12.5 11.5 19.5 10-11 24/32 1 34.5 34.5 34.5 700.0 Aug 2 28.0 29.5 28.8 472.5 2015 - 3 26.0 27.0 26.5 281.7 0830 3 23.0 24.0 23.5 178.3 8 15.0 19.5 17.2 68.8 7 11.0 12.5 11.8 20.4 12 Aug 11/11 3 32.0 33.0 32.5 573.3 0830 - 1 29.0 29.0 29.0 310.0 1345 4 26,0 27.5 26.8 312.5 1 22.5 22.5 22.5 150.0 2 10.5 10.5 10.5 14.5 -65- Table 9, cont'd. Sp«clM t Yellow Perch Collecting method; Glllnet Depth; 6.1 Date & Tin* 12-13 Aug 2000 - 1115 8 Sep 1130 - 1600 10 Sep 1050 - 1600 10-11 Sep 1800 - 1000 4-5 Oct 1330 - 1030 6 Oct 0800 - 1300 1-2 Nov 1330 - 0830 Mo. •ampled/ Total No. Caught 4/4 3/3 46/46 26/128 18/18 13/13 9/18 No. fish 2 1 1 Mln. IgthCcm) 22.5 18.5 10.0 20.5 5 24.0 21 20.0 16 17.0 4 14.5 1 30.5 2 28.5 3 22.0 2 20.0 14 16.0 4 11.5 4 23.5 6 20.0 4 18.0 4 15.5 1 30.0 1 26.5 9 20.0 2 16.5 1 25.0 21.0 4 16.0 3 14.5 Max. Igth(cm) 23.5 18.5 10.0 23.0 26.0 23.5 19.5 16.5 30.5 29.0 24.5 21.0 19.5 14.0 25.0 22.5 19.5 16.5 30.0 26.5 23.5 18.5 25.0 21.0 17.5 15.0 Mean Igth(cm) 23.0 18.5 10.0 21.8 Mean wgt.(g) 165.0 70.0 11.0 126.7 25.0 201.0 21.8 126.4 18.2 85.6 15.5 45.0 30.5 520.0 28.8 475.0 23.2 186.7 20.5 119.0 17.8 85.6 12.8 25.0 24.2 216.3 21.2 166.7 18.8 92.5 16.0 53,8 30.0 350.0 26.5 330.0 21.8 128.3 17.5 42.5 25.0 245.0 21.0 135.0 16.8 65.0 14.8 40.0 -66- Table 9, cont'd. Spedea ; Yellow Perch Collecting method: Glllnet Depth; 9.1 Date & Time 11-12 Jun 1415 - 0900 11-12 Jun 1415 - 0900 13 Jun 0915 - 1545 13 Jun 0915 - 1545 14 Jul 1130 - 1500 14 Jul 1600 - 2030 15 Jul 1230 - 1600 17 Jul 2050 - 1000 18-19 Jul 2045 - 0930 10 Aug 0930 - 1630 No. sampled/ Total No. Caught No. flah 102/102 4/4 17/17 3/3 31/31 59/59 30/30 22/85 22/66 33/33 4 93 5 1 3 4 13 Mln. Igth(cm) Max. Igth(cm) 28.0 20.0 15.0 29.0 26.0 19.5 30.0 23.0 30.0 25.5 26.7 21.5 28.7 25.0 28.5 5 26.5 26 21.5 5 28.0 17 24.0 37 21.0 3 28.0 8 24.0 19 22.0 3 31.0 2 28.5 10 24.0 7 22.5 4 27.0 16 23.0 2 21.0 9 30.0 11 27.0 5 25.0 6 22.0 1 19.0 1 11.0 29.2 28.0 25.5 30.5 26.0 23.5 31.0 26.0 23.5 31.5 29.0 26.5 23.5 28.5 25.5 22.5 32.0 29.5 26.5 24.5 19.0 11.0 Mean Igth(cm) 28.5 23.0 17.2 30.0 24.2 27.7 22.8 28.9 Mean V8t.(g) 348.8 166.2 62.0 350.0 216.7 310.0 166.2 339.0 27.2 328.0 23.5 167.9 29.2 396.0 25.0 225.9 22.2 174.6 29.5 373.3 25.0 219.4 22.8 155.8 31.2 480.0 28.7 385.0 25.2 214.0 23.0 145.0 27.8 336.3 24.2 190.9 21.8 142.5 31.0 488.9 28.2 375.0 25.8 246.0 23.2 147.5 19.0 90.0 11.0 15.0 -67- Table 9 , cont'd. SpttclM :_ Yellow Perch Collactins vathodt Glllnet D«pth:__ 9.1 Dat« & Mo. sanplad/ No. Mln. Max. Mean M«an TlB« Total No. Caught fUh Igth(cm) Xgth(c») Igth(ca) vgt. (g) 10-11 9/13 1 30.0 30,0 30.0 430.0 Aug 2 28.5 29.5 29.0 395.0 2030 - 1 22.5 22.5 22.5 150.0 0830 4 18.5 19.5 19.0 86.3 1 12.0 12.0 12.0 10.0 12 Aug 15/15 1 29.0 29.0 29.0 420.0 0840 - 2 20.0 22.5 21.2 120.0 1330 6 16.5 19.5 18.0 76.7 6 11.0 12.5 11.8 19.1 12-13 15/42 1 24.0 24.0 24.0 180.0 Aug 2 22.0 22.0 22.0 155.0 2015 - 6 19.0 21.5 20.2 110.8 1100 5 14.5 17.5 16.0 58.0 1 13.0 13.0 13.0 20.0 8 Sep 4/4 1 23.5 23.5 23.5 180.0 1130 - 1 19.0 19.0 19.0 100.0 1600 2 14.5 15.0 14.8 40.0 10 Sep 30/30 1 32.5 32.5 32.5 590.0 1105 - 4 27.0 29.0 28.0 395.0 1600 4 23.0 24.0 23.5 182.5 8 20.0 21.5 20.8 108.8 12 15.5 19.5 17.0 78.3 1 11.0 11.0 11.0 15.0 10-11 20/210 1 29.5 29.5 29.5 385.0 Sep 2 26.0 27.5 26.8 327.5 1800 - 3 22.5 23.5 23,0 180.0 1000 5 20.0 22.0 21.0 133.0 8 16.5 19.5 18.0 91.9 1 13.5 13.5 13.5 30.0 4-5 22/22 1 34.0 34.0 34.0 710.0 Oct 1 32.0 32.0 32.0 580.0 1345 - 3 28.0 30.0 29.0 401.7 1045 10 21.0 24.5 22.8 184.0 3 16.0 19.0 17.5 70.0 4 13.0 15.0 14.0 32.5 6 Oct 6/6 2 26.0 27.0 26.5 265.0 0815 - 2 23.0 23.5 23.3 177.5 1300 1 19.0 19.0 19.0 90.0 1 14.5 14.5 14.5 35.0 -68- Table 9, cont'd, Spttdaa : Yellow Perch Collecting method: Glllnet Depth; 9.1 Date & Tine 1-2 Nov 1330 - 0830 Mo. sampled/ Total No. Caught 7/38 Mo. fish 1 1 3 2 Min. Igth(cm) 28.0 24.0 21.0 19.0 Max. Igth(cin) 28.0 24.0 22.5 19.5 Mean IgthCcm) 28.0 24.0 21.8 19.2 Mean wgt. (g) 390.0 195.0 161.7 100.0 -69- Table 9, cont'd. Sp«elMt_ Yellow Perch CollactiiiB aathod: ^^^^^ Depth :__ 6.1 Dat« & Tla* No. sampled/ Total No. Caught No. fish Mln. Igth(cin) Max. Igth(cm) Mean IgthCcm) Mean vgt.(g) 11 Jun 1606 - 1611 39/39 3 1 33 2 20.0 18.0 13.5 9.7 21.7 18.0 16.7 10.7 20.9 18.0 15.1 10.2 128.3 80.0 46.5 9.0 11 Jun 1611 - 1616 26/26 1 22 1 2 22.0 14.5 13.5 8.5 22.0 17.5 13.5 11.0 22.0 16.0 13.5 9.8 140.0 43.6 30.0 10.0 17 Jul 1327 - 1337 2/2 1 1 19.0 10.0 19.0 10.0 19.0 10.0 90.0 13.0 18 Jul 2050 - 2100 59/59 2 2 23 29 3 29.0 24.0 20.0 15.0 8.0 31.0 25.0 23.0 19.0 11.0 30.0 24.5 22.5 17.0 9.5 472.5 187.5 120.0 77.4 11.3 18 Jul 2115 - 2125 3/3 3 17.0 18.5 17.8 66.7 11 Aug 2106 - 2116 2/2 2 10.5 12.0 11.2 20.5 11 Aug 2215 - 2225 2/2 2 12.5 13.0 12.8 27.5 12 Aug 1409 - 1419 9/9 6 3 11.0 9.5 13.5 10.5 12.2 10.0 21.6 12.8 12 Aug 1431 - 1441 2/2 1 1 16.5 12.5 16.5 12.5 16.5 12.5 60.0 24.0 9 Sep 1430 - 1445 33/33 4 23 6 19.0 4.5 3.5 20.5 6.0 4.0 19.8 5.2 3.8 105.0 0.9 0.7 9 Sep 1445 - 1500 9/9 1 2 1 5 18.5 14.0 11.5 4.0 18.5 15.0 11.5 5.5 18.5 14.5 11.5 4.8 90.0 35.0 17.0 1.2 9 Sep 2044 - 2054 5/5 2 1 2 19.0 16.5 5.0 20.0 16.5 5.0 19.5 16.5 5.0 100.0 60.0 1.0 -70- Table 9, cont'd. Sp1 Date 6 Tlsa No. sampled/ Total No. Caught No. fish Min. Igth(coi) Max. Igth(cm) Mean Igth(cm) Mean wgt. (g) 11 Jun 1606 - 1616 23/23 5 6 12 11.0 5.0 3.0 13.5 6.5 4.5 11.8 5.8 3.8 18.0 1.6 0.6 11 Jun 1625 - 1635 61/61 9 6 46 8.7 5.5 2.0 12.6 8.2 5.0 10.6 6.8 3.5 13.3 2.9 0.6 18 Jul 2050 - 2100 38/38 38 3.5 5.0 4.2 1.2 18 Jul 2115 - 2125 37/37 37 5.0 11.0 8.0 4.6 11 Aug 2106 - 2116 30/30 6 4 20 12.0 8.0 4.0 13.0 10.5 6.5 12.5 9.2 5.2 26.7 10.0 4.3 11 ^ug 2215 - 2225 33/33 14 19 9.0 4.0 13.0 7.0 11.0 5.5 13.6 1.6 12 Aug 1409 - 1419 3/3 1 2 10.5 5.5 10.5 5.5 10.5 5.5 11.0 1.5 12 Aug 1431 - 1441 5/5 1 2 2 13.0 9.0 4.5 13.0 11.0 4.5 13.0 10.0 4.5 21.5 10.5 0.5 9 Sep 1430 - 1440 20/20 2 18 9.0 6.5 10.0 8.0 9.5 7.2 3.0 3.9 9 Sep 1445 - 1455 16/16 1 5 10 12.5 9.0 6.0 12.5 10.0 8.0 12.5 9.5 7.0 19.0 8.0 3.5 9 Sep 2044 - 2054 54/54 4 13 8 29 13.0 9.5 6.5 2.0 14.0 12.0 9.0 6.0 13.5 10.8 7.8 4.0 27.5 16.2 5.0 1.4 9 Sep 2107 - 2117 25/25 6 3 16 11.0 7.0 4.0 13.5 9.0 6.0 12.2 8.0 5.0 20.0 5.7 1.3 19 Oct 1410 - 1420 2/19 2 IP. 5 12.5 11.5 16.0 -79- Table 9, cont'd. Spttclaa ; Trout-perch Collecting method: Trawl Depth :__6jl_ Date & Tine 19 Oct 1431 - 1441 19 Oct 1903 - 1913 19 Oct 1924 - 1934 1 Nov 2100 - 2110 1 Nov 2123 - 2133 No. saarpled/ Total No. Caught 4/46 14/64 8/79 2/2 6/6 No. flah 3 1 4 8 1 1 2 3 1 2 Mln. Igth(cin) 3 2 1 10.0 7.0 12.0 10.0 7.0 2.0 13.5 12.5 9.0 7.0 12.0 11.5 11.5 9.5 Max. Igth(cm) 12.5 7.0 13.5 10.0 7.0 2.0 14.0 12.5 9.0 8.0 12.5 13.0 11.5 9.5 Mean Igth(cm) 11.2 7.0 12.8 10.0 7.0 2.0 13.8 12.5 9.0 7.5 12.2 12.2 11.5 9.5 Mean wgt.(g) 15.0 4.0 20.0 1.3 3.0 0.5 25.0 18.3 8.0 4.5 17.5 20.0 15.0 9.0 -80- Table 9 , cont'd. Species :_ Trout-perch _ Collecting method 1: Trawl Depth: 9.1 Date & Tine No. sampled/ Total No. Caught No. fish Mln. Igth(cm) Max. Igth(cm) Mean Igth(cm) Mean wgt. (g) 11 Jun 1710 - 1720 58/58 4 4 50 11.0 7.0 2.5 14.0 9.0 6.5 12.5 8.0 4.5 21.4 6.6 0.9 11 Jun 1730 - 1740 94/94 6 4 84 9.5 7.0 3.0 12.5 7.5 6.0 11.0 7.2 4.5 16.7 3.8 0.8 18 Jul 2137 - 2147 128/128 29 99 9.5 3.5 13.0 6.0 11.2 4.8 14.1 1.2 18 Jul 2159 - 2209 182/182 80 102 8.0 3.5 13.0 7.0 10.5 5.2 15.8 1.4 12 Aug 1451 - 1501 16/16 3 13 9.0 4.5 12.5 7.0 10.8 6.2 14.0 1.7 12 Aug 1513 - 1523 25/25 1 19 5 11.5 5.0 4.0 11.5 6.0 4.5 11.5 5.5 4.2 5.0 1.6 0.8 12 Aug 2116 - 2126 36/36 22 14 8.0 3.5 16.0 5.0 12.0 4.2 15.5 1.4 12 Aug 2139 - 2149 53/53 26 14 13 11.5 8.5 3.5 14.0 11.5 5.5 12.8 10.0 4.5 21.2 10.7 1.2 9 Sep 1400 - 1410 7/73 1 1 5 13.0 10.0 6.5 13.0 10.0 7.5 13.0 10.0 7.0 22.0 19.0 3.2 9 Sep 1415 - 1425 3/26 1 1 1 11.5 10.0 5.5 11.5 10.0 5.5 11.5 10.0 5.5 16.0 10.0 2.0 9 Sep 2127 - 2137 36/36 9 9 2 9 7 12.0 10.0 9.0 6.5 4.5 14.0 11.5 9.5 8.0 5.5 13.0 10.8 9.2 7.2 5.0 22.2 14.4 3.0 3.3 1.3 9 Sep 2150 - 2200 5/5 2 1 2 12.5 8.0 4.5 13.0 8.0 4.5 12.8 8.0 4.5 20.0 5.0 1.0 -81- Table 9, cont'd. Specie* ; Trout-perch Collecting method: Trawl Depth; 9.1 Date & Time 19 Oct 1320 - 1330 19 Oct 1344 - 1354 19 Oct 1944 - 1954 19 Oct 2008 - 2018 1 Nov 2011 - 2021 1 Nov 2037 - 2047 Mo. sampled/ Total No. Caught 15/154 10/105 7/72 5/56 1/14 4/4 No. fish 8 1 5 1 6 3 1 4 3 1 3 1 Mln. Igth(cm) 11.5 10.0 7.0 5.0 12.0 10.0 5.5 13.5 5.5 13.5 10.0 8.5 12.5 12.5 8.0 Max. Igth(cm) 14.0 10.0 8.0 5.0 14.5 12.0 5.5 13.5 7.5 13.5 12.0 8.5 12.5 13.5 8.0 Mean Igth(cm) 12.8 10.0 7.5 5.0 13.2 11.0 5.5 13.5 6.5 13.5 11.0 8.5 12.5 13.0 8.0 Mean wgt. (g) 25.0 10.0 4.2 2.0 24.2 13.0 2.0 27.5 2.7 20.0 16.0 7.0 17.0 23.3 5.0 -82- Table 9, cont'd. Species : Trout-perch Collecting method: Seine Depth; 0-1.5 Date & Time 18 Jul 2130 - 2145 6 Aug 2102 - 2108 6 Aug 2125 - 2132 6 Aug 2140 - 2145 12 Aug 2030 - 2040 12 Aug 2050 - 2100 12 Aug 2110 - 2120 12 Aug 2135 - 2145 12 Aug 2155 - 2205 7 Sep 2053 - 2100 7 Sep 2210 - 2220 5 Oct 1630 - 1642 5 Oct 2115 - 2145 No. sampled/ Total No. Caught 3/3 1/1 3/3 1/1 7/7 53/53 19/19 15/15 43/43 1/1 3/3 1/1 5/59 No. fish 1 1 1 Mln. Igth(an) 1 2 3 2 3.0 11.5 15.0 10.0 5.5 10.0 1 8.0 6 4.5 15 8.5 38 4.5 6 8.0 13 4.5 3 9.5 12 5.0 9 8.0 34 5.5 7.5 13.0 8.0 11.0 11.0 8.0 Max. Igth(cm) 3.0 11.5 15.0 10.0 5.5 10.0 8.0 6.5 10.5 8.0 10.0 7.0 13.0 7.5 11.0 7.5 7.5 13.0 9.5 11.0 11.5 8.5 Mean Igth(cm) 3.0 11.5 15.0 10.0 5.5 10.0 8.0 5.0 5.5 1.7 9.5 8.7 6.2 2.4 9.0 8.3 5.8 2.3 11.2 16.7 6.2 3.3 9.5 10,0 6.5 2.6 7.5 13.0 8.8 11.0 11.2 8.2 Mean wgt.(g) 0.5 10.0 30.0 10.0 2.5 11.0 3.0 21.0 16.5 14.0 15.0 5.0 -83- Table 9, cont'd, SpaclM ; Trout-perch Collecting method: Seine Depth; - 1.5 Date & Tlae 5 Oct 2215 - 2240 1 Nov 2000 - 2020 1 Nov 2020 - 2040 No. sampled/ Total No. Caught 24/24 1/1 1/1 No. fish 7 10 7 Mln. Igth(att) 11.5 9.5 8.0 11.5 10.5 Max. Igth(cm) 13.5 11.0 8.5 11.5 10.5 Mean Igth(cm) 12.5 10,8 8.2 11.5 10.5 Mean wgt.(g) 21,2 11,5 5,0 16,0 12,0 -84- Table 9, cont'd. Species ; Johnny darter Collecting method: Trawl Depth ; 6.1 Date & Time 24 May 1430 - 1440 11 Jun 1606 - 1616 11 Jun 1606 - 1616 11 Aug 2106 - 2116 11 Aug 2215 - 2225 12 Aug 1409 - 1419 12 Aug 1431 - 1441 9 Sep 1430 - 1440 9 Sep 2044 - 2054 9 Sep 2107 - 2117 19 Oct 1410 - 1420 19 Oct 1431 - 1441 19 Oct 1903 - 1913 sampled/ tal No. Caught No. fish Min. Igth(cm) Max. Igth(cm) Mean Igth(cm) Mean wgt.(g) 1/1 1 6.5 6.5 6.5 5.0 13/13 8 5 5.0 4.0 6.5 5.0 5.8 4.5 2.3 0.7 18/18 7 11 5.6 3.5 7.0 5.0 6.2 4.2 1.6 0.7 4/4 4 3.5 6.0 4.8 1.3 3/3 3 5.0 6.0 5.5 1.7 1/1 1 4.5 4.5 4.5 0.5 1/1 1 4.5 4.5 4.5 0.5 4/4 4 5.5 6.5 6.0 1.8 3/3 1 2 5.0 3.0 5.0 3.5 5.0 3.2 ■ 1.0 0.5 5/5 5 2.5 4.5 3.5 1.0 1/1 1 6.0 6.0 6.0 2.0 1/1 1 4.0 4.0 4.0 0.5 1/1 1 4.0 4.0 4.0 1.0 -85- Table 9, cont'd. Sp«cla«; Johnny darter Collecting method: Trawl Depth; 6.1 Date & Time 19 Oct 1924 - 1934 1 Nov 2100 - 2110 1 Nov 2123 - 2133 2 Nov 1028 - 1038 No. sampled/ Total No. Caught 3/3 1/1 2/2 1/1 No. fish Mln. Igth(cm) 4.0 4.0 4.0 4.5 Max. Igth(cm) 4.0 4.0 4.5 4.5 Mean Igth(cm) 4.0 4.0 4.2 4.5 Mean wgt.(g) 0.7 0.5 1.0 1.0 -86- Table 9, cont'd. Species ! Johnny darter Collecting method: Travl Depth : 9,1 Date & Time No. sampled/ Total No. Caught No. fish Mln. Igth(cin) Max. Igth(cm) Mean Igth(cm) Mean wgt.(g) 11 Jun 1710 - 1720 2/2 1 1 5.5 3.5 5.5 3.5 5.5 3.5 2.0 0.5 11 Jun 1710 - 1720 19/19 14 5 5.0 3.5 7.0 4.5 6.0 4.0 2.1 0.8 12 Aug 1513 - 1523 3/3 3 5.0 6.0 5.5 3.3 12 Aug 2116 - 2126 1/1 1 4.5 4.5 4.5 1.0 12 Aug 2139 - 2149 2/2 2 3.5 5.0 4.2 0.8 9 Sep 1400 - 1410 4/4 3 1 5.0 3.5 7.0 3.5 6.0 3.5 2.0 0.5 9 Sep 2127 - 2137 3/3 3 4.0 5.5 4.8 0.8 9 Sep 2150 - 2200 3/3 3 3.5 4.0 3.8 1.0 19 Oct 1320 - 1330 3/3 3 4.5 5.5 5.0 1.3 19 Oct 1344 - 1354 3/3 3 3.5 4.5 4.0 0.7 19 Oct 1944 - 1954 7/7 4 3 5.0 4.0 7.0 4.5 6.0 4.2 2.3 0.7 19 Oct 2008 - 2018 4/4 4 3.0 4.0 3.5 0.9 1 Nov 2011 - 2021 7/7 7 4.0 4.5 4.2 0.8 -87- Table 9, cont'd, SpedftS t Johnny darter Collecting method: Trawl Depth; 9.1 Date & Time 1 Nov 2037 - 2047 No. sampled/ Total No. Caught No. fish Mln. Igth(cffl) 3.5 Max. Igth(cm) 4.0 Mean Igth(cm) 3.8 Mean wgt.(g) 0.4 -88- Table 9, cont'd. SpeclMi ; Johnny darter Collecting method: Seine Depth; - 1»5 Date & Tine 28 Jun 2200 - 2230 13 Jul 2130 - 2135 12 Aug 2030 - 2040 10 Sep 1423 - 1429 5 Oct 1630 - 1642 No. sampled/ Total No. Caught 22/22 1/1 1/1 1/1 2/2 No. fish 22 Min. Igth(cn) 4.0 4.5 5.5 6.5 4.5 Max. Igth(cm) 7.0 4.5 5.5 6.5 4.5 Mean Igth(ca) 5.5 4.5 5.5 6.5 4.5 Mean wgt.(g) 1.0 1.0 2.0 1.5 -89- Table 9, cont'd. SpttdttS : White sucker Collecting method: Glllnet Depth; 6.1 Date 6 Time No. sampled/ Total No. Caught No. fish Min. Igth(cm) Max. Igth(cm) Mean Igth(cm) Mean wgt.(g) 25-26 May 1800 - 0845 17-18 Jul 2100 - 1000 10 Aug 0930 - 1630 10-11 Aug 2015 - 0830 12 Aug 0830 - 1345 12-13 Aug 2000 - 1115 10 Sep 1050 - 1600 10-11 Sep 1800 - 1000 4-5 Oct 1330 - iOSO 1-2 Nov 1330 - 0830 1/1 2/2 6/6 11/11 1/1 6/6 3/3 2/2 6/6 7/8 3 2 1 3 2 2 1 3 46.0 44.0 42.0 39.0 35.0 51.0 43.0 36.0 30.5 24.0 43.0 1 42.0 1 29.5 4 25.0 1 49.0 2 35.5 1 46.0 1 36.0 2 49.0 1 46.0 1 35.5 2 31.0 3 48.0 1 44.0 1 40.0 2 31.0 46.0 46.5 45.0 39.5 35.0 53.0 44.0 38.0 30.5 27.0 43.0 42.0 29.5 26.5 49.0 38.0 46.0 36.0 50.0 46.0 35.5 31.0 48.0 44.0 40.0 32.0 46.0 45.2 43.5 39.2 35.0 52.0 43.5 37.0 30.5 25.5 43.0 42.0 29.5 25.8 49.0 36.8 46.0 36.0 49.5 46.0 35.5 31.0 48.0 44.0 40.0 31.5 1050.0 1157.5 1118.3 752.5 500.0 1836.7 1100.0 737.5 385.0 228.3 1240.0 850.0 357.0 210.0 695.0 1450.0 680.0 1650.0 1250.0 575.0 460.0 1216.7 1050.0 925.0 470.0 -90- Table 9, cont'd. Species s White sucker Collecting method: Gillnet Depth; 9,1 Date & No. sanpled/ No. Mln. Max. Mean Mean Time Total No. Caught fish Igth(aB) Igth(cm) IgthCcm) «gt.(g) 11-12 2/2 1 44.0 44.0 44.0 910.0 Jun 1 33.5 33.5 33.5 470.0 1415 - 0900 15 Jul 1/1 1 35.5 35.5 35.5 510.0 1230 - 1600 17-18 1/1 1 31.0 31.0 31.0 420.0 Jul 2050 - 1000 10 Aug 9/9 2 45.0 47.0 46.0 1480.0 0930 - 3 42.0 43.0 42.5 1050.0 1630 3 31.0 36.5 33.8 501.7 1 23.5 23.5 23.5 165.0 10-11 8/8 1 58.0 58.0 58.0 2540.0 Aug 5 42.0 46.5 44.2 1082.0 2030 - 2 32.0 36.5 34.2 580.0 0830 12 Aug 2/2 1 32.0 32.0 32.0 400.0 0840 - 1 26.0 26.0 26.0 250.0 1330 12-13 3/3 2 47.0 47.5 47.2 1300.0 Aug 1 43.0 43.0 43.0 1150.0 2015 - 1100 10-11 4/7 1 45.0 45.0 45.0 1350.0 Sep 1 38.5 38.5 38.5 830.0 1800 - 2 29.0 32.0 30.5 475.0 1000 4-5 2/2 1 46.0 46.0 46.0 1250.0 Oct 1 30.5 30.5 30.5 420.0 1345 - 1045 1-2 3/7 1 55.0 55.0 55.0 2500.0 Nov 1 47.0 47.0 47.0 1550.0 1330 - 1 35.0 35.0 35.0 675.0 0830 -91- V Table 9, cont'd. Species ; White sucker Collecting method: Trawl Depth; 6.1 Date & No. sampled/ Time Total No. Caught 11 Aug 2215 - 2225 9 Sep 1400 - 1410 19 Oct 1431 - 1441 No. fish 1/1 1/1 1/1 Min. Igth(cm) 21.0 43.5 10.5 Max. Igth(cm) 21.0 43.5 10.5 Mean Igth(cm) 21.0 43.5 10.5 Mean wgt.(g) 150.0 L800.0 16.0 -92- Table 9 , cont'd. Specias ! White sucker Collecting method: Trawl Depth ; g . i Date & Time 1 Nov 2011 - 2021 No. sampled/ Total No. Caught 1/1 No. fish Mln. Igth(co) 48.5 Max. Igth (cm) 48.5 Mean Igth (cm) 48.5 Mean wgt. (g) 1080.0 -93- Table 9 , cont'd. Species ; White sucker Collecting method: Seine Depth; - ^-'5 Date & Time No. sampled/ Total No. Caught No. fish Mln. Igth(cm) Max. Igth(cm) Mean Igth(cm) Mean wgt.(g) 13 Jul 2115 - 2120 13 Jul 2130 - 2135 6 Aug 2125 - 2132 6 Aug 21A0 - 2145 5 Oct 1630 - 1642 5 Oct 2115 - 2145 1/1 1/1 2/2 1/1 1/1 4/4 22.5 25.5 24.5 8.0 2.5 12.0 32.0 28.0 21.0 22.5 25.5 24.5 8.0 2.5 12.0 32.0 29.5 21.0 22.5 25.5 24.5 8.0 2.5 12.0 32.0 28.8 21.0 150.0 195.0 185.0 5.0 7.0 30.0 490.0 317.5 130.0 -94- Table 9, contM, Speclea! Longnose sucker Collecting method: Gillnet Depth: 6,1 Date & No. sampled/ No. Mln. Max. Mean Mean Time Total No. Caught fish Igth(cni) Igth(cm) Igth(cm) wgt.(g) 25-26 3/3 3 38.0 44.5 41.2 933.3 May 1800 - 0845 10 Aug 1/1 1 25.5 25.5 25.5 210.0 0930 - 16.30 10-11 3/3 1 34.5 34.5 34.5 500.0 Aug 2 24.0 26.0 25.0 190.0 2015 - 0830 12-13 1/1 1 26.5 26.5 26.5 225.0 Aug 2000 - 1115 10-11 3/3 1 42.0 42.0 42.0 860.0 Sep 2 28.5 29.0 28.8 310.0 1800 - 1000 4-5 2/2 1 52.0 52.0 52.0 2100.0 Oct 1 46.0 46.0 46.0 1400.0 1330 - 1030 1-2 1/1 1 47.0 47.0 47.0 1400.0 Nov 1330 - 0830 -95- Table 9, cont'd. Spades; Longnose sucker Collecting method: Glllnet Depth; 9.1 Date & Time Mo. sampled/ Total No. Caught No. fish Min. Igth(cm) Max. Igth(cm) Mean Igth(cm) Mean wgt.(g) 11-12 Jun 1415 - 0900 10 Aug 0930 - 1630 10-11 Aug 2030 - 0830 12-13 Aug 2015 - 1100 1-2 Nov 1330 - 0830 1/1 3/3 4/4 4/4 4/15 1 1 2 1 2 1 34.0 24.5 26.0 24.5 50.0 35.0 27.0 51.5 42.5 32.5 34.0 25.0 28.0 25.0 50.0 35.0 29.0 51.5 43.5 32.5 34.0 24.8 27.0 24.8 50.0 35.0 28.0 51.5 43.0 32.5 525.0 178.3 222.5 172.5 1500.0 540.0 267.5 2050.0 1262.5 480.0 -96- Table 9, cont'd. Species; Longnose sucker Collecting method: Trawl Depth; 9.1 Date & Time 18 Jul 2137 - 21A7 12 Aug 2139 - 2149 No. sampled/ Total No. Caught 1/1 1/1 No. fish Mln. Igth(cm) 23.0 25.0 Max. Igth(cm) 23.0 25.0 Mean Igth(cm) 23.0 25.0 Mean wgt.(g) 1A5.0 210.0 -97- Table 9, cont'd. Species; Longnose sucker Collecting method: Seine Depth; - 1,5 Date & Time 13 Jul 2130 - 2135 No. sampled/ Total Mo. Caught 2/2 No. fish Min. Igth(an) 23.5 Max. Igth(cm) 23.5 Mean Igth(cm) 23.5 Mean wgt. (g) 145.0 -98- Table 9, cont'd. Species } Lake trout Collecting method: Gillnet Depth; 6.1 Date & Time No. sampled/ Total No. Caught No. fish Mln. Igth(cm) Max. Igth(cin) Mean Igth(cm) Mean vgt. (g) 1-2 Nov 1330 - 0830 12/12 71.0 66.0 61.0 55.0 74.0 69.0 64.0 59.0 72.5 67.5 62.5 57.0 4150.0 3200.0 2800.0 2250.0 -99- Table 9, cont'd. Species ; Lake trout Collecting method: Gillnet Depth; 9.1 Date & No. sampled/ Time Total No. Caught 11-12 Jun 1415 - 0900 10 Aug 0930 - 1630 10-11 Aug 2030 - 0830 4-5 Oct 1345 - 1045 1-2 Nov 1330 - 0830 3/3 1/1 1/1 2/2 1/1 No. fish Mln. Igth(cffl) 77.0 21.0 62.0 62.0 71.0 Max. Igth(cm) 88.0 21.0 62.0 66.0 71.0 Mean Igth(cm) Mean wgt. (g) 81.0 21.0 64.0 71.0 4158.3 80.0 62.0 3150.0 2600.0 4000.0 -100- Table 9 , cont'd, Speclea ; Lake trout Collecting method: Trawl Depth; 6.1 Date & Time 11 Jun 1606 - 1616 No. sampled/ Total No. Caught 1/1 No. £l8h Mln. Igth(cm) 12.5 Max. Igth(cm) 12.5 Mean Igth(cm) 12.5 Mean wgt.(g) 15.0 -101- Table 9, cont'd. Spttdes ; Lake trout Collecting method: Trawl Depth! 9.1 Date & Time 11 Jun 1710 - 1720 No. sampled/ Total No. Caught 1/1 No. fish Min. Igth(cm) 11.5 Max. Igth(cm) 11.5 Mean Igth(cm) 11.5 Mean wgt.(g) 13.0 -102- Table 9 , cont'd. Species ; Lake trout Collecting method: Seine Depth; - 1,5 Date & Time 28 Jun 2030 - 2050 28 Jun 2050 - 2110 28 Jun 2200 - 2230 1 Nov 2020 - 2040 11 Jun 1710 - 1720 No. sampled/ Total No. Caught 1/1 8/8 5/5 1/1 1/1 No. fish Mln. Igth(cm) 13.0 11.0 15.5 10.5 64.0 11.5 Max. Igth(cm) 13.0 14.5 15.5 11.5 64.0 11.5 Mean Igth(cm) 13.0 12.8 15.5 11.0 64.0 11.5 Mean wgt. (g) 12.0 13.8 2900.0 13.0 -103- Table 9, cont'd. Sp«clMt Chinook salmon Collecting method: Glllnet Depth; 6.1 Date & Time 10-11 Sep 1800 - 1000 No. sampled/ Total Mo. Caught T/I No. fish Mln. Igth(cffl) 19.5 Max. Igth(cm) 19.5 Mean Igth(cm) 19.5 Mean wgt. (g) 80.0 -104- Table 9, cont'd. Species; Chinook salmon Collecting method: Gillnet Depth; 9.1 Date & Time 10-11 Sep 1800 - 1000 4-5 Oct 1345 - 1045 No. sampled/ Total No. Caught 1/1 2/2 No. fish Mln. Igth(cm) 22.5 24.5 Max. Igth(cm) 22.5 25.5 Mean Igth(cm) 22.5 25.0 Mean wgt.(g) 120.0 210.0 -105- Table 9, cont'd. Species; Chinook salmon Collecting method: Seine Depth; - 1.5 Date & Time 28 Jun 2030 - 2050 28 Jun 2050 - 2110 13 Jul 2100 - 2115 13 Jul 2115 - 2120 13 Jul 2130 - 2135 No. sampled/ Total No. Caught 15/15 7/7 1/1 4/4 3/3 No. fish 15 Min. Igth(cm) 8.5 8.5 11.5 10.0 10.5 Max. Igth(cm) 10.5 11.5 11.5 11.5 12.5 Mean Igth(cm) 9.5 10.0 11.5 10.8 11.5 Mean wgt. (g) 12.9 17.0 13.8 16.7 -106- Table 9, cont'd. Species ; Rainbow trout Collecting method: Seine Depth: - 1>5 Date & Time No. sampled/ Total No. Caught No. fish Mln. Igth(cm) Max. Igth(cm) Mean Igth(cm) Mean wgt.(g) 13 Jul 2100 - 2115 2/2 2 12.0 13.0 12.5 19.5 13 Jul 2130 - 2135 1/1 1 17.0 17.0 17.0 50.0 14 Jul 1330 - 1341 1/1 1 12.0 12.0 12.0 19.0 10 Aug 0940 - 0945 2/2 1 1 17.5 14.5 17.5 14.5 17.5 14.5 45.0 30.0 10 Aug 0956 - 1002 2/2 1 1 45.0 10.5 45.0 10.5 45.0 10.5 1120.0 17.0 12 Aug 2030 - 2040 1/1 1 12.5 12.5 12.5 21.0 12 Aug 2110 - 2120 3/3 1 2 17.0 13.5 17.0 14.5 17.0 14.0 50.0 30.0 12 Aug 2135 - 2145 1/1 1 11.0 11.0 11.0 20.0 10 Sep 1435 - 1440 1/1 1 19.0 19.0 19.0 100.0 5 Oct 1602 - 1610 1/1 1 14.0 14.0 14.0 35.0 5 Oct 1650 - 1710 1/1 1 17.0 17.0 17.0 30.0 5 Oct 2115 - 2145 1/1 1 15.5 15.5 15.5 45.0 1 Nov 1545 - 1600 6/6 2 1 3 48.0 43.0 21.0 48.5 43.0 24.0 48.2 43.0 22.5 1512.5 1000.0 136.7 -107- Table 9, cont'd. Species » Rainbow trout Collecting method: Seine Depth; 0-1.5 Date & Time No. sampled/ Total No. Caught No. fish Mln. Igth(cm) Max. Igth(cm) Mean Igth(cm) Mean wgt. (g) 1 Nov 1615 - 1630 1 Nov 2040 - 2110 2/2 1/1 28.0 22.0 26.0 28.0 22.0 26.0 28.0 22.0 26.0 340.0 130.0 260.0 -108- Table 9, cont'd. Species; Emerald shiner Collecting method: Seine Depth; - 1.5 Date & Time 7 Sep 2053 - 2100 7 Sep 2105 - 2115 7 Sep 2200 - 2205 5 Oct 1630 - 1642 No. sampled/ Total No. Caught 12/12 6/6 1/1 1/1 No. fish 11 1 Mln. Igth(cm) 6.5 5.0 5.5 6.5 7.0 Max. Igth(cm) 7.5 5.0 8.5 6.5 7.0 Mean Igth(cm) 7.0 5.0 7.0 6.5 7.0 Mean wgt. (g) 3.1 2.0 2.8 2.0 3.0 -109- Table 10. The date, location, type of gear, as well as length and weight of some less commonly captured species in the Cook Plant area. Fish were captured from May to November, 1972. Time Sta- Length Weight Species Date Gear Started tion (mm) (fi) Longnose dace 28 Jun Seine 2200 B 8.5 5.0 13 Jul Seine 2115 A 5.5 2.0 15 Jul Seine 1355 B 6.5 3.0 15 Jul Seine 1355 B 7.0 3.0 18 Jul Seine 2130 B 6.0 2.5 10 Aug Seine 0956 A 6.5 3.0 10 Aug Seine 0956 A 8.5 6.0 12 Aug Seine 2050 A 5.5 3.0 12 Aug Seine 2050 A 6.5 3.3 12 Aug Seine 2050 A 6.5 3.3 12 Aug Seine 2050 A 8.0 4.0 12 Aug Seine 2135 B 5.5 2.0 7 Sep Seine 2105 A 6.5 2.0 7 Sep Seine 2130 A 4.0 0.5 Carp 10-11 Aug Gillnet 2030 D 67.5 5, ,300.0 * 11 Aug Trawl 2215 C 70.0 8, ,200.0 12 Aug Trawl 1513 D 75.0 10, ,000.0 12-13 Aug Gillnet 2000 C 68.0 6, ,150.0 12-13 Aug Gillnet 2000 C 70.0 1 . ,700.0 4-5 Oct Gillnet 1330 C 54.0 4, ,000.0 4-5 Oct Gillnet 1330 C 61.0 5 ,000.0 4-5 Oct Gillnet 1345 D 53.5 4 ,050.0 5 Oct Seine 2115 A 50.5 4 ,000.0 Lake herring 17 Jul Gillnet 2050 D 27.0 190.0 10 Aug Seine 0940 A 4.0 1.0 10 Aug Seine 1059 B 4.0 1.0 13 Aug Seine 1605 A 4.0 1.0 10 Sep Seine 1423 A 5.5 1.0 5 Oct Seine 1630 A 8.0 4.0 1 Nov Trawl 2123 C 7.0 3.0 Coho salmon 28 Jun Seine 2030 A 9.5 10.0 28 Jun Seine 2050 A 7.5 10.0 8 Jun Seine 2050 A 8.0 10.0 28 Jun Seine 2050 A 8.5 10.0 28 Jun Seine 2200 B 11.5 - 28 Jun Seine 2200 B 9.5 - 10-11 Sep Gillnet 1800 D 28.0 225.0 5 Oct Seine 1602 A 18.5 40.0 1-2 Nov Gillnet 1330 C 33.0 500.0 -110- Table 10,contM, Species Mottled sculpin Bloater Brown trout Ninespine stickleback Channel catfish Smallmouth bass Quillback Lake sturgeon Lake chub Time Sta- Length Weight Date Gear Started tion (mm) (fi) 11 Jun Trawl 1606 C 4.0 0.5 28 Jun Seine 2200 B 8.5 8.0 9 Sep Trav/l 204A C 5.0 2.0 9 Sep Trawl 2044 C 2.0 0.5 9 Sep Trawl 2107 C 2.0 0.5 19 Oct Trawl 1944 D 3.0 0.8 19 Oct Trawl 2008 D 3.5 1.0 1 Nov Trawl 2037 D 3.5 0.8 1 Nov Trawl 2037 D 4.5 1.0 1 Nov Trawl 2037 D 5.0 2.0 11 Jun Trawl 1710 D 16.5 37.0 11 Jun Trawl 1606 C 10.5 10.0 11 Jun Trawl 1606 C 8.5 8.0 11 Jun Trawl 1606 C 10.0 8.3 11 Jun Trawl 1606 C 11.2 8.6 18 Jul Trawl 2137 D 11.0 15.0 18 Jul Trawl 2159 D 12.5 20.0 25 May Gillnet 1340 C 30.5 380.0 10 Aug Seine 1012 A 16.0 45.0 10-11 Aug Gillnet 2030 D 40.0 960.0 12-13 Aug Gillnet 2015 D 55.0 3,300.0 12-13 Aug Gillnet 2015 D 37.0 750.0 1-2 Nov Gillnet 1330 C 47.0 1,400.0 1-2 Nov Gillnet 1330 C 43.0 1,000.0 11 Jun Trawl 1606 C 6.0 1.9 11 Jun Trawl 1606 C 6.2 2.0 11 Jun Trawl 1710 D 6.8 2.0 A-5 Oct Gillnet 1345 D 32.0 310.0 1 Nov Trawl 2100 C 17.5 60.0 28 Jun Seine 2200 B 21.5 140.0 13 Jul Seine 2130 A 38.5 820.0 18-19 Jul Gillnet 2045 C 100.0 10,200.0 9 Sep Trawl 1430 C 13.0 20.0 9 Sep Trawl 1430 c 7.0 4.0 --m- Table 10, cont'd. Time Sta- Length Weight Species Date Gear Started tion (mm) (g) Northern pike 5 Oct Seine 1602 A 16.5 20.0 Green sunfish 5 Oct Seine 1720 B 6.0 15.0 Slimy sculpin 19 Oct Trawl 1944 D 8.5 12.0 Gizzard shad 1 Nov Seine 2020 A 13.5 30.0 -112- Table 11. A numerical (sometimes visual) estimate of the abundance of fry captured in seines pulled along 61 m of shoreline during 1972. Numbers and estimates represent a mean of the number of hauls for that month pooled over stations A and B, No. of Spottail Month Hauls Shiner Alewife Smelt Jun 3 Jul 11 Aug 22 numerous numerous numerous Sep 10 some numerous some Oct 6 2000 Nov 7 -113- Table 12, Number of larval fish found in three 10 minute larval tow samples collected during May to November, 1972. Tempera- ture at the towing depth is also given. Species Station Sampling Dates 5/24-25* 6/13 9/10 10/19 11/2 Perch C D Alewif e C D Rainbow Smelt C D 3 3 1 2 Temperature (C) Sta. C 10.9 16.0 17.8 11.9 11.0 Sta. D - 16,3 18.1 11.0 11.0 *One replicate tow 7 miles south of the Cook Plant contained no fish larvae -IIA- Fish, M. P. fishes. LITERATURE CITED 1929. Contributions to the early life history of Lake Erie Bull, of Buffalo Society of Natural Sciences. 14: (3)136-187, Hubbs, C. L., and K. F. Lagler. 1964. Fishes of the Great Lakes Region. The University of Michigan Press, Ann Arbor. 213 p. ~n s-