TPWD 1968 F-2-R-15 #1176: Region 2-B Fisheries Studies: Evaluation of Catchable Rainbow Trout Fishery, Canyon Reservoir, Comal County, Texas

--- Page 1 --- Job No. Marion Tocle D-J Coordinator JOB PROGRESS REPORT As required by Do FEDERAL AID IN FISHERIES RESTORATION ACT TEXAS K- Federal Aid Project No. F-2-15 REGION 2-B FISHERIES STUDIES E-9: Evaluation of Catchabie Rainbow Trout Project Leader: Richard L.. Write J. R. Singleton Executive Director Texas Parks and Wildlife Department Austin, Texas <=. z , aa Eugene A. Walker Ceca a : Director, Wi November 12, 1968 idlife Services --- Page 2 --- Summary ¢ A total of 6,000 rainbow trout was stocked in the tailrace waters of Canyon Reservoir, Comal County, Texas. Creel census methods indicated anglers harvested 3,549 trout, or 59 per cent of the number stocked. Water quality studies and bottom samples taken indicate a suitable habitat for rainbow trout in the tailwaters. The over-all program was felt to be quite successful ana project personnel recommend that the "put and take" fishery be continued. --- Page 3 --- Job Progress Report State of Texas Project No. F-2-15 Name : Region 2-B Fisheries Studies Job No. E-9 Title: Evaluation of Catchabie Rainbow Trout Fishery Period Covered:_ February 1, 1967 to January 31, 1968 _ _. Background: Rainbow trout, Salmo gairdneri, have peen purchased by a private concer 1 and stocked, with the assistance of Department personnel in tne tailrace waters below Cane yon Dam, Comal County, Texas. This action was instigated by the private concern after they learned that the Canyon Reservoir Project Repert (february 1960, repared by the Branch of River Basin Studies) indicated the possibiiity of the trout Fishery in cold tailrace waters below the dam. A 3-year stcecking progran 30,000 catchable trout which have been donated by the private concern, is nearing midpoint. Over summer survival of trout from an April 1966 stocking of 10,000 was verified by Texas Parks and Wildlife Department fishery personn in Gcteber i966. Water quality studies including temperature, dissolved oxygen, carbon dioxide, and alkalinity over the past year indicate suitable trout habitat. sluation, through rnreel census, of this trout fishery was made to determine if the economic and recre- ational aspects of this program warranted future maincenancs. The Guadalupe River has its origin on the Edwards Plate and flows southeastward through steep hills and limestone bit ; the region. This study was accomplished on a section of the Guetta northwest of New Braunfels, Comal County, Texas. The 3! | ing basin of Canyon Reservoir and continues for 10.35 stream has a gradient of 2.5 feet per mile, and an average wi and an average depth of approximately 4 feet. The iast 3 Tf releases from Canyon Reservoir. The stream is clear t of approximately 50 per cent riffles and 50 per cent dominately gravel and limestone. Some silt deposits are the study area and in natural pools and in 5 pools created at various points on the stream secticn. Aquatic vegetation was sparse in this section of the river because of floods, but since as of Canyon Dam conditions have become more favorable for growth of vegetation. oth pre-emergeat and emergent species are found wit =e ga (Chlorophyceae) oad bushy pondweed (Najas guedalupensis) st al yee aquatic plants found in the reach are sago poridweed t af. feather (Myriophyllum heterophylium), cattail (Typha i (Nuphar sp.}, watercress (Nasturtium Sp. ), southern wi water primrose (Jussiaea sp.), and muskgrass (Chara vulgaris). --- Page 4 --- w De Baldcypress (Taxodium distichum), oak (Quercus sp.), sycamere (Platanus occidentalis), pecan (Carva illinoensis), and cottonwood trees (Fo ulus sp.) are common along the reach. The bulk of the fish pcpulation in this section of the r fish; namely, longnese gar (Lepisosteus csseus), gizzard shad ( river caprsuckers (Carpiodes carpioi, and gray redhorse sucksrs Game fish in the reach are channel catfish (ict (Pylodictu y Fiskhead eabFis ides}, Gsadalupe bass S on yaES bs largemouth black bass (Mic 3 not. (Micropteru i : nS. species mund in the stream include stonerollers ae Semies ketta ait anomalum), commen mosquitorish i Cambusds affinis), logperch (Percina caprodes), dusky dai darter Conran dt scierus), darters (Etheastoma spp.), and various minnows and shiners (Notropis spp. i)» Objectives: pt ° le a J determine the per cent return of stocked fish. 2. To determine the length of time a plant of trout contributes to the fishery. 3, To determine the average catch per man hour of fishing. 4. To determine the average catch per fishing trip. 5. To determine the average length of time per fishing trip. 6. To determine the economic factors involved, namely, the value of the returns. 7. To determine through water quality studies the continuance of Canyon Dam tailwaters to provide suitable trout habitat. 8. To determine through bottom sample studies the available focd supp:v ror a trout population. Procedures: Approximately 6,000 seven to eight inch rainbow trout wege study by the Lone Star Brewing Company, Sar Antonio, Texas al clipped (right pectoral and left pelvic) by project persct 1967 to the Amyx Trout Farm, Rockbridge, Missouri. The tr re inc hatchery for 17 days te observe any mortality or disease outbreak. Maia was flushed through the raceways 3 times during this period to inhibit fungus. Eleven fish died in the raceways during this period. anne _Seeen i/ As part of a wildlife project, the company has puvchassd 22,000 fish to date and donated them for this study. --- Page 5 --- On March 6, 1967 approximately 3,000 fish were stocked in the tailrace waters below Canyon Dam, Comal County, Texas. The remaining 5,000 were stocked on March 10, 1967. Figure 1 illustrates the site of the trout stocking stations on the 10-mile tailrace area. Creel census operations began immediately end each drop site was checked every hours from dawn until dusk. A creel census card, Figure 2, was filled out on each fisherman and a post card, Figure Za, was also given to him te fi fi ii out and mail in at the end of the day. This post cand methed allewed project personnel to compare total catch on the fishermen whe left the ares between creel census rounds. The creel census was conducted for 5 consecutive days and 2 consecutive weekends follow- ing each drop, with creel check coming every other weekend thereafter. In conjunction with the creel census, an economic evaluation sheet, Figure 3, was filled out on every tenth fisherman. This procedure was included to determine what the trout fishery lent to the economy of the immediate area. Bottom samples, using a Surber square foot sampler, cliected from li stations on the tailrace during periods when the water releases were not so high as to impede sampling. The samples were preserved in 70 per cent aicchel solution and returned to the San Marcos laboratory for identification. Water quality studies were run weekly on the tailrace in order to determine the continuing suitability of water for trout. Dissolved oxygen, cuy, alkalinity, and semperature were recorded, Findings: As the data from.the census were analyzed, it became apparent that there was a significant difference in weekday and weekend fishing, with tne latter exhibiting greater fishing pressure and harvest Conseguentiy, the two were treated separately in the statistical projection of che tetal harvest. The catch per man hour was tabulated from the fishermen for which the creel card and the returned post card were availabie. For the : net return the post card, an hour use count was derived. Since the an extra hour was added to the final time Doe was checked at 2:00 P.M. and was not quit at 3:00 P.M.). The total daily catch cry nate en co 5 X= €¥) €24+Q) wheres total daily catch Y = catch per man hour derived from veturnéed post cards %Z = hours use cerived from fishermen returning post cards --- Page 6 --- «i= FIGURE 1. RIVER ROAD * Grop sites o water sample sites ate. --- Page 7 --- «5a FIGURE 2 Fish CENSUS o> PARKS AND WILDLIFE DEPARTMENT LAKE DAT 19. NAME [COPTIGNAL? — — HOURS FIBHEO: MORNING. arTernoo airy. STAT! TOTAL HOURS FISHED——————__ wcbien “TTT I BELOW LIST NUMBER FIGHES CAUGHT UNDER THEIR NEAREST BIZE ike ol ead Wi id a WC cd Kc Ko eg cad A Con es lon MARKED TROUT SN OE OO OD UNMARKED TROU H+ + te TAGGED TROUT ++] ee auNriaN | | yt Ht} HEP carrion NS ND Pt tT PT rr OTHERS per es ee ee TOTAL aaa WO NN ed AE A LA A A a A REMARKB | KIND OF FISNING NUMBER GF FIBH CAUGHT WITH: BOAY €¢ > SHORE ¢ Span € 9 TROLLING ¢ 2 ee MINNOWB EUTBAIT: STILL FIBHING CY BARTING €3 FLY FIGHING ¢ 9 WADE ¢ 3 SPINNERS..____RAYFIEHWW WC THERS? ART. FLIER... WORM Bn anata oenematenes meaanemcarnaes annie aie meme eneneenemeneeeetee ene eee eee rgremnaner FIGURE 2a ale ener ements anata aentincannh vaste shamde tates a “mermnanneceaantendacnin aaa ntdhcatermintinn{ catia nttbesiadssndencie iach ens hceeee a NAME es enter een ADDRESS NO, TROUT CAUGHT NO. HOURS FISHED REMARKS; a NO. MARKED TROUT oe teeny: merece = --- Page 8 --- aie FIGURE 3 ECONOMIC INFORMATION FORM FILLED OUT BY CREEL CLERK ON EVERY TENTH FISHERMAN Economic Information State City Main reason for trip Boat; Type Length Motor (hp): Rental fees: Boat $ Motor $ Launching $ License: Yes No Gas and oil purchased for boat: Gallons Cost $0 Meals purchased today: Number Cost $ Light refreshments purchased for today: Cost $ Ice for today's trip: Pounds Cost $ Lodgingplace last night Cost’ $ Bait and tackie purchased for today's trip: Natural bait $ Artificial lures $ Hooks $ Sinkers § Line $ Floats $ Stringer Dip net $ $ re CRE a RR ARNE NR SE NRE Swivels § Other $ Miles traveled today . Mileage cost (caluclated) License cost $ Total trip expenditure $ . Remarks: : , Ae a ca ne RN ER RR RR Ne EEA IE = acerca - 3 a ‘ re meme meee e: --- Page 9 --- @ = heurs use deri not returning pose The total harvest estimate was cbtsinedc by the ‘i 9 Leslie and Davis (1939) which is based on the principl 26 cana be estimated from d catch per wm poputaricn size decreases. 3 s meth a has been plotted against (X axis) of m th of trout on he me c Was calculated to be 2,330. Pata and compilations for this projection are Ll, Tables | fhe projected catch of trout on weekdays was calculated to b compilations for this prejection are given in Tables 2, 2a, and Graph 2. The sum of these 2 projections, 3,549 fi . of 59 per cent of the 6,000 fish stocked in QMemeh 1967. t to the fishery approximately 7 months, with some limited catches =e recorded as late as September 1967. The decrease in fishing pressure was directly proporticnal to the increase in days following the stocking. Fly fishermen had fairly unaitorn success throughout the 7-month period. a3 $s The average catch per man hour for the census périod was determined by using data from fishermen who had returned the post card. The average catch per man hour for weekends and weekdays was 0.52 and 1.03 respectively. The catch per man hour, Similar to the fishing pressure, decreased steadily over the next 5 months. During the census period, weekend fis! trip and harvested 2.12 fish, while the weekda hours per trip. ft should be noted that the week immediately fellewing the drop, and harvest was ¢ aiso obtained from fishermen for whom both the creel 2. harvest nmued inte The date used hod enplejyed , A and fer appremimately led cut on every tenth one. This figure did not ather represents ont During the period from March 1,600 fishermen censused with sar economic fishermen spent an average ot 53.°4 per fis t a the cost of gasoline used is making the angler spent io the immediate areca for bai was run on an every other weekend basis, number of anglers would approximate 2,505 economic boost to the area of approximately --- Page 10 --- a wy a ad OLS rt a fA colt N at Wy Uy WO om st 00 ON OO DO ¢ be nw Ore OWA AHO ~ at a edd eed wd ee et OM ON +t O ete aa ap EC uy =) ary 7) OO ALN st COED th Ow Ms oO Att N rie iY CO eed ed om CD: et ba rt 3 ie ~ S) eal ool Wo Oo Oo G Et <q “Sanog “papuedxy Axeuunsg snsus9 [3e9c9 AnNcay pu T e19gel ° o € ° 2M 2 ° om .- 6G t G t ° o va get ed oN u ° 3 & co af Pe 0 © © rt N ei wd © of Q COIS wel § [ae uN 4 Le EEN wet ond + Ooo NIN wi ©3200 Yoed pnd ris ENCE aa ;suy Aad YOIey --- Page 11 --- fTabie la Mean Daily 2 Cumulative Catch Xx Catch Per Hour = Y 318 101,124 1.05 333.90 813 660,969 0.69 560.97 1,153 1,329,409 0.59 680.27 1,454 2,114,116 0.57 828.78 1,660 2,755,600 0.49 664.00 1,770 3,132,900 G.23 407.10 1,844 3,400,366 0.40 737,60 1,882 3,541,924 0.14 263.48 1,922 2,694,084 0.27 518.94 1,967 3,869,989 0.16 314.72 1,991 3,964,081 0.19 199.10 2,003 4,012,009 0.08 160.24 2X = 18,777 2x* = 32,575,641 DY = 4.68 DAY = 5,669.10 (2x)? = (18,777)% = 352,575,729 N= 12 (ZX) (ZY) = (18,777) (4.68) = 87,876.36 (ZX) (ZY) Slope of line = b= ZAY = _N 2 ax" - (EX) N 87,876.36 = 3,669.10 2 a ee 35,575,644 = 352,575,729 12 = 1,653.93 3,194,331 = » 0.000517770 In the formula Y = a + bX, we now have b and can firid a by substituting the avevage values for X and Y in the formula: X =X =_18,777. = 1,576.65 Y=yY = 4,68 = 0.39 N iZ N id --- Page 12 --- G = Oo Table la (continued) Y = a + bX or 0.39 = a + (-0.000517770) (1,576.65" or 0.39 = a + (~0.8163420705) or a = 1.206342 The equation of the line is : ¥ = 1.3622167290 + (-0.000517770) CX) If we set Y (catch per hour) = 0 (which it theoretically will become cnly when ne more fish are to be caught), then: 0 = 1,3622167290 + (-0.000517770) (X} then, X = 1.206342 = 2,339 0.000517770 Or X = 2,330 = estimated eventual retura of marked fish on weekends. --- Page 13 --- 009c Fett ie. paren uns is ae ime HOLVO FALLVIONAO 092 aCte o0z2 cooz ATL PELE OOgT oO TET Arty 9T oot PEP er 00eT ae eee 4. ‘0 04°0 09°C OS°O ON'0 O£°0 G20 OT'O SATIBeTNuMO qsuyese *yo4BO peqqgotTd anoy awed yo3xeo JO Sut] uotsmeusey e T ydeap “W Seuarearotne ne T O2°T OTT 00°T 06°0 09 4 Td HODV) NV Y e 1 rt iat YOO UH --- Page 14 --- = ne GSO‘T Z00°7 766 9€8 Old TES 98E LE Bez 78 ; gayey so qe9 aATIeTAUN AU Teq upoWw =— ws = ~~ $junod 8sn Worl papuedxy “ensue. UGC Uaas Azewuing snsuep [eeI9 ynoay, Aepyssm Z eTqel eso ‘tT LyOT LS9 STBIOL TS Gol OT 67°C LY G6 £y% youew 4G 96 7 LG°0 cE 9G gz Yyosren 18 L6 6€ 06°0 cS 8S gt yosew VOT GL LT yy°T 6L GG bl YoreHn SUT VOT cS C7°T HL cS €t yore eniv4 Lig 78 L6°0 6zt Cet GL qorzeW 08 €Y OT C8°T OS LZ & Yyorrn 8E 19 OT €9°0O oe TS 8 yoren OVT CLT G6 06°C CL 08 L yeaew 89T Ld, Le SL’? 601 OS 9 YOreW Sanoy Sanoy Gnoy deTeuy 4nory TeRoL “‘peqsry sanoy “ae Aytea Zaysuy esp deg youre) [PIOL Leq0L ~~ qoae5 --- Page 15 --- Meal Daily Cumulative Cateh = X% 710 836 932 1,002 1,055 2a XY 9 Ko ate Per Bours VL 504,100 1,43 698,896 1.44 868, 624 0.90 1,904,004 G87 1,113,025 0.49 2x = 4535 | ons > © Ut Ga uw Rae) NS ii (2x)? = oN Be er a M ind Ne? i on a © un ies ot Paes (4.82) = Slope of line = ZXY - (2X) GY) N —— 4,188, 649 21,858.70 zx? 2 ~ AEX) N 21,858.70. . a Perea: intrdonnay b = slope =_4,138.93 203. = = 4,188,649 ~ 20,556,225 | p) b = ~0,0039856 In the formula Y = a = bx we now have b and can Find a by suushituring the values for X and Y in the fo - K= X= 4,535 = 907 N 5 Y= 46 + bY or 0.964 = or 0.964 = or a. = The equation of the Line is: x If we set Y (catch per hour) more fish are to be caught, = 3.7626392 ~ 1,219 i or x 1,008.20 , 203.84 838.80 571.14 516,95 IXY =4,138.93 rmulas yj = % = GA: a + (=9.0030856) (997) ~2.7/986392 + a 3.76264 Y= 3.76264 = 0,00390856% = 0 (which it theoretically wil) then: 0.0030856% become Only when no --- Page 16 --- projected catch, wo faa h 2. Weekday 12) a G a ow A GP ne 12-282 = od - —— Sr ct zi i + : a Ho : SES ous Ween eee ; e ieee anne fe - = “as + al tH atrt Becceersescreeseeescez’ sores sess seensatees H | Spat rscegerecsers : Tt ; : ig i Cert at i i + nt + T i i A. t n $ tte +e ae itt { rot aH Eenceeeete = =H See $e PLCS cueseGeeeusbeaieersteeretepenoreeee! rt ee ea eet cr ae -+t n 1 n hoo 600 800 1000 1200 1400 1600 1800 2000 200 2 Squares to the Inch aeeeee oh =o i Ze iN 4 EE : yee. rt oe ey Race 3 Ses SOSSGESESE FERESEERe mens am SUSRERSRSE EER { ret mee 3 z SSS SSS SSS sens ceertneden ententarfartartcteri : persssseis sane Siu0 Se: SSRna ee awSSeaee owes was: | Ht trot aa See HH { Seeeaae HH ae an steeees i aoe 4 t rH - a t : : Seowssaees ceeneccces senaccceas senceeenas ssesaeuaes scaseee rH beet ctHH | I tt Lit co t { n 7 im ++ + OT S*T WT €°T |2t TT oT 670 gro Lo 90 Sto Ho €°0 270 TO 0 youeo eATQeTnuno qsuTeze peqqgoTd anoy aed yoqeo jo eUuTT UoTssedsey °2 ydeay: CUMULATIVE CATCH --- Page 17 --- -15- With the average of 4 hours per fishing trip, this would indicate that the fishery provided 10,000 man hours of fishing during the 7-month period. Prior to the trout fishery, angler hour use in the tailrace would have been less than 500, for the same period of time, with the majority of that being trotline fishermen. The increase in angler hour use or fishermen opportunity is readily apparent and to put it on a percentage basis would provide an astronomical figure of 2,000 per cent increase. A drop of 3,000 trout in November 1967 provided good fishing through the winter and early spring, but harvest immediately following the drop was inhibited by incle- ment weather. A creel census was initiated, but because of the sporadic harvest it was felt that the time could be better davoted to other jobs on the project. Tagged fish from this drop showed a growth cf 4 ounces and % inch per month. By early spring, most of the 8-9-inch fish from this stocking were 11-13-inches long. The results of the bottom sample collections are given in Table 3 of this report. As can be seen, Ephemeroptera and Diptera are readily available in the stream and these two, along with Tricoptera, are most significant in the food demands of rainbow trout. Limited stomach sampling indicated that the preferred diet of the fish seemed to be Tricoptera where available, but with the fluctuation of the water level due to releases, many forms of terrestrial insects were also consumed by the trout. From all indications, the food supply, in the form of inverterbrates, in the Canyon tailrace area is more than adequate for the trout fishery. Water Quality Characteristics Eight temperature and water sample stations were established along an 1l-mile stretch of the tailwaters. These stations are at intervals of approximately 1% miles. Trout were stocked as far downstream as water and temperature station No. 6. Weekly temperature and water samples were taken at each station. Water quality of primary concern, other than temperature, was dissolved oxygen, alkalinity, carbon dioxide, and pH. Turbidity and hydrogen sulfide concentrations were determined as the need arose. The average temperature by season and flow is illustrated in Figures 4 through 7. These figures portray the seasonal fluctuations of temperatures at low flows as well as the almost stable temperature readings at high flows regardless of atmospheric temperature. An over-ail annual average temperature at each station regardless of season or flew is illustrated in Figure 8. Lissoived oxygen concentrations fluctuated very little throughout the entire trout area. A high of 13.0 ppm was recorded at station Nos. 4, 5, and 6 in mid-April 1967. This occurred when the water release was the highest recorded since impound- ment. A low of 7.0 ppm was recorded in mid-May 1967. This occurred just shortly after the release gates had been closed for repair. Normally, dissolved oxygen concentrations ranged from 8.0 to 10.00 ppm. --- Page 18 --- Temperature (CF) September Z2 - Hecember 2. 50 CFS \ \ oo ae SS 259C°S ra 27 per tte ADL CPS oni eee ons an Sa eT ie / Psat 500 CFS ee ae ot ee pe acpi! ) pane wt ee FIER fe mt Se gape ej te 6 ot ” — C : - 7 ; \ \ \ AN ‘© Sample Station --- Page 19 --- Temperature (°F) \- Sample Station 3.4 ~i7- Figure 5 Winter Decenber 21 - March 21 4 A 5 6 7 A River Miles Beiow Dam 10 , 10U CFS ci0 CFS 150 Cis 11 --- Page 20 --- F olRe Figure 6 Spring March 21 © June 21 80 75 L 0) ' / 101: GFS 65) 4 a ol — s5|_ } Temperature (°F) 50 5 scoping mear—nmthTSLE pcinsnema “GN 3 é 7 A 8 eo A iy AGL River Miies Below Pam Ne Sample Station --- Page 21 --- #19 Figure 7 Summer June 21 - September 22 80 CFs 178 CFS te oO” _~ 400 crs y 4 3 42 is] .e wo a =| iy) a 55 50 45 LSS SS SSS SSS RSS 1 A 2 3A 4 A 3 6 7 4 8 9 A 10 All River Miles Below Dam A- Sample Station --- Page 22 --- Average 75 65 Temperature (oR 60 55] 7 eZ Figure 8 f Qo no Annual Temperature ("F) \ of Release Wat Flows 1 2 car er a i rr er ir Sr CL Se As Sample Station --- Page 23 --- -~21- Total aikalinity ranged from 171.0 ppm to 222.0 ppm. Rate of water flow or seasen had little affect. Carbou dioxide concentrations ranged from 5.0 ppm to 0.00 ppm. The high read- ings usuelly oceurred at Low flows in the long deeper pools. Lower concentrations were recorded as the flow increased. pH ranged from 7.4 to 7.8. Excessive turbidity was encountered only when heavy rainfall was experienced on the trout area. The gradient of the stream plus the amount of release water eased this situaticn in a short period of time. Hydrogen sulfide, in trace amounts, was encountered at station No. 1. This occurred during July and Augusc i967 after the take proper had thermally stratified. The concentration of H9S never exceeded 0.1 ppm. The water quality studies indicate that the tailrace area will provide suitable trout habitat during most years. There is the possibility of severe droughts occurr- ing periodically which might affect the lower reaches of the present trout fishery, but these conditions can be overcome by alteration of stocking procedures. Temperature of the water would be affected most by a cutback in the releases from Canyon Dam, while dissolved oxygen seems to vary imperceptibly with different releases. Discussion: After carefully viewing ail aspects of the trout fishery, project personnel were co rie ly satisfied with the results of the program to date. The inexperience of the staff with coldwater fisheries provided many avenues of error, with constant réflecance to the trout Lirerature available. It is felt that by running the creel census on every weekend rather than alternate weekends, better harvest figures will be attained, Fishermen interest is very high immediately following the stocking, with the fly fishermen enjoying their angling as the trout settle down and become somewhat more diffie to creel. Fishermen access poses a problem in some areas, but tne Landownecs have been very considerate in most cases allowing the fishermen entrance te the river. With the exceileac harvest, avaitable food, and water quality available, the experimental trout fishery is mest encouraging. Recommendatiors : Because of tne success of the trout fishery to date, it is recommended that this 9 program be continued for another segment. fo ye “7p ) __ Approved by: ale J Gag COTL- pation Coordinator Prepared by: OR FRED G. LOWMAN Inland Fisheries Supervisor --- Page 24 --- =22= 8 0 0 I 7 0 0 if 0 0 0 0 0 0 111 ¢ 0 6 Lz 9 6 "9 6 z I II 91 9 18S LY 9 SE €8 IL ELT a1€ ze TE SE 62 0 611 STS 8 S l 0Sz T€ "% 61 61 34 Ze 96 90€ 6 6E€ €€ 1 Ls 1] 8Z SLT 8647 ‘T 29 eT 4 Ons 102 19 € OZI 81 €z 81 LI l 7 97S °T 96 0z L6 642 ST an: TesoL 498961 ded 8061 wer 961 99d T96t “aces Toe “SAV T96T ATE yuo! 2eg sTewTUy Jo AequNN [eI] so[dueg woqjog Jeqem{te]l uoAueg € e19PL (4) c9 G6 Tee £1 26 LT aval L96T eunL 1s el 9L c6 80T VE 662 9T eSZ L961 Sen /Z BpozetEN suUIOMpUNOI pequeUsasug le Sep FuyeapAH seq} 10784 €i93d00e Td SeTTJZeU03S Bq eUCpO SoT[J[esweq pur seT[yuoseaq it Bpodor9 ses) sT}eus — Bpodkde Ted ByASTToqany, SWUIOMIET A Ba0}doelo) @PAIBT |1}0eq BY seTIe0q @ia Got, SOTTIST Pow) Bisqdtd seTtd /T By oeyOSTIO suUIOMpUNOA poe QUsUses Bae J doioueydg sot TZAPH @uneg --- Page 25 --- -23- 6972'S ST Ge 92 a TeIOL 6S°2 Zz°z 69°€ ~T 0 oT 0 0 1 0 0 I 0 0 oT ) 0 0 if 9 I 0 0 0 0 0 0 ) 0 ) € i 0 8961 “49d 896T “Uer 8 (96T “Dad 90°S 6T L96T *3¢85 61°9 ce (penufquos) ¢€ a1qeL 2961 “Shy 60°47 2961 AINE ely RE £967 Sunp Ayyueg /€ mnykud /Z ssBelto /T €1°9 S29} eNlIaqUSQ oTqnD UT JQuemMeoR{dstTg [RIO] 0 8320 usTd 0 S339 BOSNTIOW 0 ‘ds Buc soeyIgy 12318q 0 Bioqdtwey SlOepTays 1azeM Zz BiaqdoTesen setTyuoesqo 1 Bout pnaty soyooe'] T IE SEPT TT Fauods sesuods rzeqeMYyseay c epodesaq ystyAeap I /Z BPE Teuty swIOMpUNoYy L BpodFyduy SIBUMITMS-spts pue spnog LO6T ABW euneg --- Page 26 --- =e References Annonymous. 1960. Canyon Reservoir Project Report, United States Department of Interior, Fish and Wildlife Service. 14 pp. Fisk, Leonard. 1966. "Creel Census Method for "‘Catchable Trout Fisheries'" Inland Fisheries Management, California Department of Fish and Game. pp. 187-152. Keuhne, R. A. 1955. Stream Surveys of the Guadalupe and San Antonio Rivers, Texas Game and Fish Commission Inland Fisheries Series No. 1. pp. 56. Leslie, P. H. and D. H. S. Davis. 1939. "An attempt to determine the absolute number of rats on a given area". Jour. Anim. Ecol., Vol. 8, No. 2, pp. 21-30. McAfee, W. PR. 1966. "Rainbow trout.’' Inland Fisheries Management. California Department of Fish and Game. pp. 192-216. Pfitzer, D. W. 1960. Investigations of Waters Below Large Storage Reservoirs in Tennessee. Tennessee Game and Fish Publication. 230 pp. Sharpe, F. Phillip. 1962. "Creel Census of a Puteand Take Teowt Stream in the Cumberland Mountains of Tennessee." Jour. of Tenn. Acad. of Sci. Vol. 37, No. 1, pp. 8-14.