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HomeMy WebLinkAboutAPA2616lXl£liill,!l£n ~ So.;",,"Joint VWtUfi Docu",,,"Nu"'bo-' ;;<t.\lo"-",".~,"~,=,.,=.-­ DOCUMENT CONTROL I IJ 'J J Fisheries and Marine Service Manuscript Report 1527 November 1979 WATER REQUIREMENTS FOR THE FISHERIES RESOURCE OF THE SOOKE RIVER,B.C. by ROY E.HAMILTON C.C.GRAHAM Habitat Protection Division Resource Services Branch Fisheries and Marine Service Department of Fisheries and Oceans Vancouver,B.C.V6E 2P1 Key Words:hydrology,fisheries resource maintenance flows,salmon In March,1977,the Greater Victoria Water District made application to divert water from the Leech River and Deception Gulch,two tributaries of the Sooke River,B.C.The Fisheries and Marine Service of the Department of Fisheries and Oceans, expressed concern to the Water Rights Branch of the Provincial Ministry of the Environment over the possible effects of such a diversion on the salmon stocks in the river.Subsequently,a study was initiated to determine the fisheries resource maintenance flow requirements for the Sooke River. This report presents the results of the study and includes a review of the fisheries resource,the hydrology and the resource maintenance flow requirements.The calculated resource maintenance flow was compared to past stream discharge records to determine whether the requirements for fisheries and the Water District were compatible. The Comptroller of Water Rights held a public hearing on March 1,1979 to review the license application.A formal presentation was made by Federal Fisheries at that hearing.On June 21,1979,a license was issued to the Water District.The clauses of this license are reviewed. n [: -~ [ [ [ [ [ fl.'U f' lJ o U D U C [ L [ [ r Hamilton,R.and C.Graham.1979. Resource of the Sooke River,B.C. ABSTRACT Water Requirements for the Fisheries Fish.Mar.Servo M.S.Report 1527. RESUME En mars 1977,le District de gestion des eaux de la region metropolitaine de Victoria a demande l'autorisation de detourner des eaux de la rivi~re Leech et de Deception Gulch, deux affluents de la riviere Sooke (C.-B.).Le Service des peches et de la mer du ministere des P@ches et des Oc~ans a exprime son inquietude a la direction des droits d'utilisation de l'eau,(Water Rights Branch)du minist~re provincial de 1 I Environnement Quant aux effects possibles dlun tel detournement sur les populations de saumons de ce cours d'eau.On a donc lance une etude pour deter- miner les debits necessaires au maintien des ressources halieutiques dans la riviere Sooke. Le rapport presente les resultat~de l'etude et comporte un examen des res sources halieutiques,de l'hydrologie et des debits necessaires au maintien des ressources halieutiques.On a calcule le debit necessaire et on l'a compare aux ecoulements enregistres afin de determiner si les besoins des res sources halieutiques et ceux du District de gestion des eaux sont compatibles. Le controleur des droits dlutilisation de lleau a tenu, le 1 mars 1979,une audience publique concernant la demande de permis;a cette occasion,Peches et Oceans a presente la position officielle.Le 21 juin 1979,le District de gestion des eaux se voyait accorder un permis,dont les clauses sont examinees dans le rapport. Mots cles:hydrologie,debits de maintien des ressources halieutiques, saumon. r [ [- [- [ l~ [' G [ j; --.d G- e c rJ [.•..'. ._., r~ [ [ [ L [ [ [ [ [ [ [ 0·:1.·,··2 D n·.·..]bj C ~ C C [ [ [ L l 1. 2. 3. 4. 5. TABLE OF CONTENTS INTRODUCTION . . . FISHERIES RESOURCE FISHERIES RESOURCE MAINTENANCE FLOWS HYDROLOGY .•... . . . . • . . . . CONCLUSIONS AND RECOMMENDATIONS SUPPLEMENT . . . . . . . . . . . APPENDIX S1 -DECISION OF THE WATER COMPTROLLER ... Page 1 3 8 10 15 30 32 2 Sooke Ri ver Spawning Di stri bution . • • . . • . . . .5 3 Freshwater Life Cylces for Sooke River Salmon ....7 4 Sooke River Spawning Habitat Related to Flow . . ..9 5 Sooke River Watershed Map .....•...••...16 6 Isohyetal Map of South End Vancouver Island - Mean Annual Precipitation • • • . • . . • . . . • . .17 7 Isohyetal Map of South End Vancouver Island - May -September Preci pi tation • . . . . . . • . • . .18 8 Leech River Hydrograph -1963 -July -Dec •.•...19 9 Leech River Hydrograph -1964 -Jan.-June ..••.20 10 Leech River Hydrograph -1965 -July -Dec ••••.•21 11 Leech River Hydrograph -1965 -Jan.-June ••...22 12 Leech River Hydrograph -1965 -July -Dec ..••..23 13 Leech River Hydrograph -1966 -Jan.-June .••..24 14 Sooke River Hydrograph -1963 -July -Dec ..••..25 15 Sooke River Hydrograph -1964 -Jan.-June .••..26 16 Sooke River Hydrograph -1964 -July -Dec.• . . . •27 17 Sooke River Hydrograph -1965 -Jan.-June .••..28 18 Sooke River Stage Discharge Curve •e.'• e e ••••29 [ [ r [ [ [ [ o o o o c [J c [ L [ L [ Figure 1 Table 1 2 3 4 LIST OF FIGURES AND TABLES Sooke River Location Plan ..••. Five Year Average Escapements for Sooke River . Sooke River Watershed Areas . Average Monthly Flows for Leech River and Sooke River . . . • . • . . . Flow Measurements of Sooke River and Tributaries ...••...• Page 2 4 11 12 13 [ r f.'f _~ [ [ L~ [ o o o C D--::; :_~ [ C [ C [ L [ ACKNOWLEDGEMENTS We would like to thank:Messrs.F.C.Boyd, W.J.Schouwenburg and R.A.Robertson for their critical review of this report;Messrs.W.J.Field,K.Johansen, and B.R.Eliasen for their field a~d office support;and Mrs.T.Collins for typing of the manuscript. [ ~ [ r l: l: [ D C F1U DlJ nt3 r-~ l ~ L r bd p I l..~ L L...:I - 1 - 1.Introduction The Greater Victoria Water District,which includes Victoria,Saanich,Sooke and interlying areas,has obtained its domestic and industrial water supply for several decades from the Sooke-Goldstream watersheds lying to the northwest of the City of Victoria (Figure 1).During 1969 -1970,to increase the capacity of their supply system,the G.V.W.D.constructed a 91 inch diameter tunnel between the Sooke Lake Reservoir and Japan Gulch Reservoir and raised the Sooke Lake dam to provide 42,000 acre feet of storage.It was then estimated that the system would meet the demands of the Victoria District with no further expansion until 1991 1 •In 1973 a diversion dam was constructed on Charters Creek,a tributary of the Sooke River, by the G.V.W.D.to supply water to the Sooke-Saseenos area. The Charters Creek flow is supplemented by flow from the old 42 inch diameter concrete pipeline fron Sooke Lake (Figure l) during low flow periods,which occur almost every summer and occasionally during winter. The drought conditions which occurred during the fall and winter of 1976,led the Greater Victoria Water District to consider another expansion of their water supply system.There- fore,on February 21,1977 they applied for a water licence for waterworks and storage of 80,000 acre feet per annum from the Leech River and the total flow from Deception Gulch.On March 7,1977 these licence applications were reduced,so that the proposed diversions are now 25,000 acre feet from Leech River, and 1,500 acre feet from Deception Gulch.In addition,the Water District proposed to allow a minimum of 10 cfs to continue flowing in the Leech River,or the natural flow if less than 10 cfs, for protection of the fishery resource.In Deception Gulch they proposed to allow 1 cfs or the natural flow if less than 1 cfs. On April 12,1977 representatives of the Greater Victoria Water District,the Ministry of Environment,Water Rights Branch and Department of Fisheries and Environment,Fisheries Management Service,met to discuss the details of these proposed diversions. At that time the Assistant Comptroller agreed to hold the water licence applications in abeyance subject to the submission of a report prepared by the Fisheries Management Service that would review the fisheries resource of the Sooke River system and address the flow proposals suggested by the G.V.W.D. 1 Report Proposed New Storage Dam at Sooke Lake by Ker~Priestman &Graeme Engineering Ltd.~Aprit~1968. r [ [- [ [' [~ [ E1L o G b b [ L L L [ L L FIGURE I o I 2 mil •• Scale in Miles -.,i i SOOKE RIVER LOCATION PLAN l.~~.,.') .,..1 •I I ,-.Ir-------r---./.I II.1/ I .I i/I·/\.~.\I't\....'DAM /J .,I •(.•/L ,-/\ .Il.:~.\'nell •INE /<.\,.,'.....................pIPE':._...,....\I"'.--\-',./~'-.......,/..-....._........... - 2 - r-----1 rl I -l r·.J,i L-__'! .-J I C'l! .'L..J ----·l_.i [ [ [ [ [ [ [ D o o B C [J [J [ [ L [ L - 3 - 2.Fisheries Resource The Sooke River system (excluding DeMamiel Creek)supports populations of chum (Oncorhynchus ketaJ,coho (0.kisutchJ,and chinook (0.tshawyt§chaJ salmon as.well as steelhead trout (SaZmo gairdnerii.) This system is a major contributor to the commercial,recreational and Indian food fisheries of Statistical Areas 19 and 20 located along the southeast coast of Vancouver Island.Public interest in the fisheries resource of the Sooke River system is very high,with local groups actively involved in salmon enhancement projects on DeMamiel and Mary Vine Creeks. Quantitative data on spawning escapement for the salmon species utilizing the Sooke River system are available since 1934. Maximum escapement to the spawning grounds over this period of time were:chum,75,000;coho,3,500;and chinook,3,500.Five year average escapement data over the time period 1953 -1977 is given in Table 1. The major spawning area in the Sooke River is between the power line,approximately two miles upstream from the river mouth, and the canyon falls,six miles upstream.Spawning distribution by species within this river reach is shown in Figure 2.The canyon falls are an impassable barrier to anadromous salmonids.The water- shed above thfs point offers some potential for coho enhancement, and at the present time,the Amalgamated Conservation Society operates a small coho incubation box facility on Mary Vine Creek.Charters Creek,which enters the Sooke River approximately one mile upstream from its mouth,is also utilized for spawning by coho,chum and some chi nook salmon. The freshwater life cycles of Sooke River salmonids are not well documented.However,based on available scale data, limited juvenile sampling,escapement records,and observations of field officers,the following estimate of the timing of the various fresh- water phases has been developed: 1.Chum salmon first appear in the system in mid-September with peak spawning occurring in late October or early November. Incubation continues until March or April when the fry emerge from the gravel and migrate downstream into salt water.Migration is complete by the end of June. 2.'Chinook salmon first appear in the system in mid- September and peak spawning occurs between mid-October and mid-November. Incubation continues until approximately April.Following emergence from the gravel,fry reside in the stream for about 90 days before migrating downstream into salt water. -4 - TABLE 1:FIVE YEAR AVERAGE ESCAPEMENTS FOR SOOKE RIVER r" [ [ [ *ESCAPEMENT is the number of adult fish returning to spawn each year. PERIOD 1977 -1973 1972 -1968 1967 -1963 1962 -1958 1957 -1953 CHINOOK 832 1,100 1,030 260 20 COHO 160 40 45 120 115 CHUM 20,600 45,000 24,000 14,400 36,000 nL. [> [ C n n.'.lJ B n~~ [' [ [' L L. [, L SOOKE BASIN FIGURE 2 RiVER- CHINOOK COHO CHUMS LEGEND ~ II m~ , I I I \ \ l I ,....-"-_. ...".....- SCALE:1.25 Inches =I mile approx. SOOKE RIVER SPAWNING DISTRIBUTION -.-_.--.- J 1'1 BONEYARDVLAKE I I / I [ ~ [ [ [ [ [ o o o ~ u o [ [ [ [ Co [ - 6 - 3.Coho salmon arrive in the system in late September with peak spawning occurring in mid-October to mid-November.Incu- bation continues until about April.The majority of coho fry remain in fresh water into their second year of life,and then migrate down- stream into salt water as smolts in May and June. The freshwater life cyle of each of these salmon species are summarized in Figure 3. r [' l-~ [ [' r-- [ o D D tJ [ [ L [ [ L [ ·L r:rr;c:l r-:--J cr-1 ~rr:-J c:l ~,[J U,I ..I.,.J ~LL"JO L J [._...uJ ~r---i ;---\.,r----""I L .J c-Jr' i r----""I J c-J FRESHWATER LIFE CYCLES FOR SOOKE RIVER SALMON REARING and DOWNSTREAM MIGRATIONINCUBATION UPSTREAM MIGRATION and SPAWNINGCHINOOK COHO CHUM .._--- - I /UPSTREAM MIGRATION //,r--,----::'*and SPAWNING INCUBATION REARING .. L.YEARlING SMOlT MIGRATION .I /UPSTREAM MIGRATiON //DOWNSTRt::AM /and SPAWNING INCUBATION MIGRATION ...... SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUl AUG- *YEAR ROUND RESIDENCE :!1 (i) C ::0m ~ - 8 - 3.Fisheries Resource Maintenance Flows In April,1977 two study sites were established in known spawning areas on the Sooke River between Charters and Todd Creeks (Figure 1).Four transects were permanently established at each study site,and detailed measurements of velocities and depths were made at each transect several times during the year.The behaviour of spawning chum salmon was observed during the last series of measurements in October.Using the data so obtained and the average velocity/depth ranges preferred by the three species of salmon present in the system,a graph was prepared relating spawning habitat to river flow (Figure 4).The graph,obtained by averaging the results from both study sites,shows that the optimum spawning flow is about 230 cfs,although there is very little difference in amount of spawning habitat over the flow range 200 to 300 cfs.In any case, the hydrographs for the few years of records (Figures 14 to 19) show that during the spawning and incubation periods the flow seldom went below 200 cfs. Upstream migration into the Sooke River begins in September and continues until the end of October.During this migration period it is desirable to maintain natural flows in the river,including peak flows,to provide attraction for the upstream migrants.During the spawning and incubation periods,through to April 1,a minimum flow of 200 cfs is desirable.After April 1 natural flows,again including peaks,should be maintained to promote both downstream migration and gravel turnover and cleansing. [ [' [ [ r-'L~ [ [ B U o b C [ LJ, [ [; L [ L +--- ..-........---H-t-H-+-H++-H++H-H-+++++H++H-H-+++-H-H-++HI-+++++-H-H++HH+~j.++H •...._._..- -- -..-+.-11+.1-I~I!I~j ~+:::::::i ,---+.-H-++--H --_::~::-:==---':f1~If:-rr :~[.f:'~l~:l~-r ...=.~~~~.._-__1-++++++-+-H~-I-++4H -H -H-++H-H-++++'++_+-+-H'-++-H-~..~~--~-I~;f~__t- ------rr -._.-t-.-t-r+--+-H-++-jH++++-H-IH++++++i-H-H--+-++I-++++++H-H-t--H-I---H-+++-oIo-H--H-l ~.'~ l J J ] J U D U o o o J 'l J ] J J J "r!i-!r1j.~:I::~-f~ht :·1-:-l·-:I··:~~:::'-1-~=~-~~'--~r~I~!-l~I~·=-.~~t~l>tj·-~1>~tl'~*~~1':f':'~'I-ll:-j~~:_--j-"---''j~:':f~'--~=-.l~..r 'i";'-!-1"---r I-..--T ---'Tr--T-.-r -.~---i'-'1-1"1 r "+1 T--r ..·..·-"'1'....,--.--, +.1 i.-j·:-!··l.!-T:j:Tln-'-'T---r-.-J'"--1---'-.-J-i·,··- _..-----T ·-rt.-r ..._-.-.T---'n---'-h.-i-i-.--iT:!i !1 IT TllTrrJ 1:-J LT-iT=Ff~'.~.--fr-l]rrrI"'!]:=r ~"r::~,+rl-Tfl:JJj-!-:~:rill'f~r -Jjrrl~l Tfl--FL'L....L~~..LLLJ.L _LLU_LL J __uJJJ_ml.J -,_:L_1LL.lL-LU ".'_I~Ii_IILL V 3~n91.:1 -6 - -10 - By analyzing the records of the Koksi1ah River,which has 18 years of records,and the San Juar River,which has 15 years of records,it was determined that the 1964 -65 period (November 1 to April 1)represents the lowest runoff likely to occur about once in 8 years. 4.Hydrology The Sooke River watershed above Charters Creek (Figure 5) has an area of 108.4 square miles.The Leech River is the main tributary with a watershed area of 39.3 square miles.Table 2 and Figure 5 give watershed areas for all the significant tributaries. Calculations using precipitation data given in Figures 6 and 7 indicate that about 50%of the annual Sooke River runoff comes from the Leech River.This agrees closely with the runoff data available (Table 3)which shows that,on the average,the Leech River represents approximately 52%of the annual runoff.There is,however, considerable monthly variation.Table 3 shows that the Leech River has contributed from 21%to 122%of the total runoff.Random flow measurements by the Fisheries and Marine Service in 1977 in the Sooke River and tributaries (Table 4)indicate that the Leech River repre- sents from 64%to 100%of the total.Both sets of information show that there is no definite monthly pattern explaining the range of contributory flows,but some of the variation will be due to the operation of the Sooke Lake reservoir.For the purposes of this report it is assumed that the Leech River represents,on the average, 75%of the runoff of the Sooke River watershed above Charters Creek during the months November to March inclusive. Therefore,to provide the recommended Fisheries·Resource Maintenance Flows of 200 cfs for spawning and incubation in the Sooke River above Charters Creek,it follows that,during the period November 1 to April 1,G.V.W.D.should only divert water when the flow in the Leech River is in excess of 150 cfs.This requirement has been superimposed on the Leech River hydrographs,Figures 8 to 13. The shaded areas above the 150cfs line show the amount of water available for storage.The upper boundary of the shaded areas repre- sents the n~ximum diversion capacity of a 400 cfs tunnel.The volumes represented by the shaded areas add up to the following: Nov.1,1963 to April 1,1964 -62,000 ac.ft. " II II II 1964 " 1965 II " II " II 1965 -30,000 " 1966 -38,000 II II II [ r [ [' [ L C o C 0- Q C: .-~ [ L [ [ [ L l Leech River -39.3 Sooke Lake -26.8 Deception Gulch -1.9 Council Creek -4.6 Old Wolf Creek -5.4 Golledge Creek -10.7 Sooke Mainstream -19.7 (Charters Creek to Sooke Dam) L [ [ [ [ I: [ D C o ~ c U L [ L [ [ l -11 - TABLE 2:SOOKE RIVER WATERSHED AREAS Watershed Total Sooke watershed above Charters Creek Charters Creek Hatershed Area in Sq.Mi 1es 108.4 8.1 TABLE 3:AVERAGE MONTHLY FLOWS FOR LEECH AND SOOKE RIVERS (in cfs)FOR THE PERIOD OF RECORD (1963-65 Gages:8HA18 SOOKE 8HA17 LEECH Jan.Feb.Mar.-Apr.May June July Aug.Sept.Oct.Nov.Dec.Mean A Leech R.459 382 259 211 120 26.1 13.1 7.7 11.7 185 393 386 193 I --0 NBSookeR.888 1240 259 336 228 125 19.1 11.8 9.6 415 412 524 372 A If x 100%52%31%100%63%53%21%69%65%122%45%75%74%52% ~CJ r-;CJ c--J CCJ c=J l._.J ITCJ l.._.]!LLJ l.iU c:=J ~~CJ r----"J C":"J TABLE 4:FLOW MEASUREMENTS OF SOOKE RIVER AND TRIBUTARIES Watershed Date of flow measurement (cfs) Area in April 20 May 5-6 Sept.28-Oct.26 Sq.Mi.1977 1977 29,1977 1977 A Leech River 39.3 105.7 41.8 20.0 450.0 B Sooke River above Leech R.25.6 5.1 0.4 0.5 C Council Cr.4.6 0.8 D .01 d Wo 1f Cr.5.4 5.5 1.2 dry 2.0 E Go 11 edge Cr.10.7 22.4 4.4 4.2 118.0 F Todd Cr.0.8 0.4 dry 2.0 G Sooke R.above Charters Cr.108.4 150.0 65.6 20.0 555.0 H Charters Cr.8.1 2.5 -0.7 5.0 [ [ [ [ [ L' [ C C D ~E C l [ [ l L L t A IT x 100% -13 - 70%64%100%81% -14 - As it is unlikely that the diversion works could operate with 100%efficiency,the volumes available would be somewhat less. However,the amount that could be diverted each season between November 1 and April 1 would represent a large part of the 42,000 acre foot capacity of'the Sooke Lake reservoir.The diversion works would have to be designed in such a way (possibly utilizing an arrangement of weirs)that the tunnel does not operate until the flow in the river exceeds 150 cfs. Deception Gulch has a watershed area of 1.9 square miles. As this represents less than 2%of the Sooke River watershed it could be diverted into the Sooke Lake reservoir without appreciably affecting the salmon fishery.However,the Provincial Fish and Wildlife Branch should be consulted respecting the effect of this diversion on resident sport fish. [ [ [ [' [ l-' [ u [J G C C- i-:, C--': --1 ~ C L L l' L L (-:c [ [ [ [ [ [ [ o c o B C lJ C [ L [ [ lJ -15 - 5.Conclusions and Recommendations The suggestion that a minimum flow of 10 cfs be provided in the Leech River for fisheries is not acceptable for the high flow period November 1 to April 1.Figures 8 to 13 and Table 3 shows that the natural monthly flow may be approximately 10 cfs during the dry,late summer months,but from November 1 to April 1 the natural flow has seldom dropped below 150 cfs. As a result of our study of the fisheries resource of the Sooke River system,and of the hydrological characteristics of the watershed,we recommend the following: 1.No diversion of the Leech River except during the period November 1 to April 1. 2.No diversion of the Leech River when the natural flows are less than 150 cfs. 3.The diversion works be designed to pass a minimum flow of 150 cfs down the Leech River during every period of diversion. 4.The gage established by Fisheries Management Service on the Sooke River above Charters Creek be read daily,and a record of the readings be made available to Fisheries Management Service upon request.(The stage discharge curve for the gage is included as figure 18.) As the amount of water available for diversion from the Leech River between November 1 and April 1,after provision of a fisheries flow of 150 cfs,is greater than the 25,000 acre feet specified in the licence application,except possibly in extremely dry years,Fisheries Management Service does not object to granting a licence providing it incorporates the foregoing recommendations. J U>" 0 ,j 0 A IT1 ] ::0- 0 <.~~l (TJ ::0 l:E :t> -I :](TJ ::0 N U> !:c J•(TJ• 0 ••• ] J ] J J ] J (I) 0 0 J~ '"CD ~ (I)Jz J "(i)Jc:::u ITI (JI J r'~ L [ [ [ l~ [ I' LJ [ n [ n [ [ o D D n o c LEGEND o SOOKE WATERSHED ~LEECH WATERSHED40 ISOHYETAL MAP SOUTH END VANCOUVER ISLAND MEAN ANNUAL PRECIPITATION __-17 -FIGURE 6 ISOHYET AL MAP SOUTH END VANCOUVER ISLAND MAY-SEPT PRECIPITATION \. -18 -FIGURE 7 ~ -=<& LEGEND [J SOOKE WATERSHED ~LEECH WATERSHED l J J 1138W3030 5l Ol 51 01 1138W3AON 5l Ol 51 OI 5 , + , 11380100 5l Ol 51 01 5 1138W3ld3S 5l Ol 51 01 5 lsnflnlf 5l Ol 51 OI 5 Alnr 5l Ol 51 OI 5 .t+; 001 '] I;'t++ J002 ,'"-.+.f+'-::'''-+,:,1+;-1+;-;' I- o r "tM .r-:.. ,f ..;.J ~ .c,--.:. ,"~ " ~',J-;-;-~!+"-iJ.-'.;.L~i· 5l Ol 51 OI S Alnr ,....;' .c ,.;::::;-".....JJ+.~,.;.;....~.-+~.i.' .~'-,.:-1.:<~ *+i-:i-+_:.l..g:L ..;..c.~ :.:...+.:...c.!-'-'-c "-'- .;..~"+H:::;:;..,.~~"";'h-'-'-:--~ ....c..:....;...c.:..,. r .":"-'--== ,-..J.~_~l.h-l~_':~.~-<­ ~.~-;.h-i-:""L,T'-' ..~P-h+:::::=P:\ .1,.J-i : i...L:_: ~~...;..+• ,~-+- .i..'" .-'-'....: -4;-'-t++I""'+-+i-''!±',;:;:R:;'.L.t:t=;::;P+t-~: ~.-. ~~:::"1 +t-'-'"~4+•;':t~iC~;':~ ,T""..':~~-H 0 -#dt~ "t ", 5l Ol 51 01 5 lSnflnlf 5l Ol 51 OI 5 1138W3ld3S 'tM , +-i! '1' 5 '-f ." . +~, 5l Ol 51 OI 11380100 .+t '-to s rr. ".,...i-J.+i.,. .'~,......I Sl Ol 51 01 1138W3AON 5l Ol 51 01 1138W3030 :,.:I-H -;::"H-i .~,!-+-; +',.OOl, 008 006 o J ] e 3~nel.:l £961 LI'fHB 'f.lS Hd'f~~O~aAH ~31\1~H~331 -6l - ., +t ~~L 5 ,4', ,~H- h i+i 4++'--'+; .'tt ;';"'j- +.f' -"'++H-~ ++ ~+~..:. ~-i-+f+t~;. -~J:4t:;+,..n~ + JUNE J.+' 'of ;,I H+H+H'Tr'-'- :i 1- " ;~' -t--!-r ~ .,. + ++ JUNE o 1.5 2.0 T, h+!-thtrt+-h'. ++"; "'+W' FIGURE 9 .'~-. ~.!. 5 2 ' +;. +H-H1' .' + +;.l.t!:t+ H' LI'.... '~mmm:4.'··,•"'T71 t',. .,+H+H-W MAY MAY o 15 20 ±t~.uu.u ~j ~i iF' -t', ,,-+ .~'1' H' .cr 'J'tt'H+'..:±ti .., t "t'htt·'·~~-m~+t tt I-H ,.±;:jj,rt-n:Ri . .lH' :It ,' t ..• :; 'r 1'0 1'520 2 ' APRIL ......., l-' 't-f +t, '1 , '~-I-iitl 1'.~ ,,+I-'-H" ~4, ,.tm-; 'l++ H-H- '+; LEECH RIVER HYDROGRAPH STA 8HAI7 1964 .tW+ti 1'0 1'5 MARCH f ~, i-H ++t1 j -20 +-++-+-14.- ~; +':'+f+t-i-+ '"'!- ii-m+;. +, tTi-t-t-f c 0800' bI~III'II'I"IIIIIIIIII,1 II [0 10 15 0 5 1'0 1'5 iO 25 JANUARY FEBRUARY --"B700,',:",'" [ [ [ [ [: uc; iC~ n:.:• t l ] ]o ~38V113::)3a £iZ C Z S Lei ~~1~-n~h' ~380J.::)O 9Z ~38l1\13J.d35 Z 91 J.5n~mt Z 9L 01 9Z OZ A-,nr rj 00 11=;··:;tt"'··f.:::'Ttf·.~':;::#'+++:;:'i:j:~j:t'i±' ~:ft'±+f .:::. 1-h:.+-' _1-1-"Ttt '+t, .+,.,. +i: ri•.IT :."" ~; :....-,-. "~ ..~ +++ t+:jj +++.:t;:r:i .:f2 ti +H+q:q-. :'+-+,-, +.i..t+~ ...~- -+~. -t ~i, ..-;..,-+'--:1 ~8"::-;-11-,12 ·11".~ ."'" 9'z OZ 9L 01 A-,nr .~ .;.; ,-t' ·tt-li "j ~. ..;.~t+t±~-:-~ -M +. +t. Elf:, ,'.........T ' +i +:; ;~-,-_~,r.~-++''11 --.-., ,··!I 'j M'I' 9Z OZ 91 OL J.5n~n'lt i· 'H+.,..,, 't-! •'.:-~~~':~-Y .~ .~+;;'I,f-t-H~,-i-+T ~~ +-4 :i-!-£~+++:-4~'" ,. -tt+~, .';+'-t±pJ~w-etirtiti*'-' .,.. -i' .-+-;+. ,-'+' ".-.I',• '-ltt±±tI :±i±+.,"'~+,...- .~~f-+~~++-H -i-;-i +,I .t+ r+':,~~.~ :+t ! ',T,-i+i+., + 9Z OZ 9L OL ~38V113J.d35 t-i++ 'Ti .,.....: --4-t H:~++t +! ,4-"; 17961 ll"H8 'V1S Hd'V~~O~aAH ~3AI~H~331 LZ - 9Z OZ 91 OL ~380J.::)O ".', 9Z OZ 9L OL ~38V113AON ~' SZ 0"9L 01 ~38l1\13::)3a OOSI ~ 00..........· J J J J00£_ 00. n '....J n.... I • L.- [j [ L [,-I -22 - FEBRUARY o 15 20 25 LEECH RIVER HYDROGRAPH STA 8HAI7 1965 MARCH o 15 20 25 .' o 5 FIGURE II JUNE o 1.5 2.0 2.5 t-'- r:-:--- H+ "; j '4+ ';1-+ lm*tii'i";'t'.+t-lf,,S -I "++-r:;r: o 1'5 2025 JUNE i..j: i'~~+t' I+' h-t -l-l - tti: U-i-l_-++1't¢' +f+J~;'H ;..; h-"ttr 1T:' 5 Lf-l . --+., 2' t' ..·H-l .'r; ,HU ++r~ t' roo .:...... MAY -I- ,r H+· 'tH+H+-!~t, -, ~++ t"" ~1HIl'1In-f '+' .L 1'0 1'520 2' APRIL +rH-H' '-4..j, 2'5 ... -t-, H-f .;..,'" ';' MARCH j-: ,~t d f ;'"1' -H + +-' ,W-H++ ~t i+!' ".- ...,-; t:i -++-1-1- -M"t JANUARY .~ .,t-,.,[0 800 D 5001 0'1lI"';T'tt'.1/000 ~~._........~~I-'- 1,4j;2 I ,., : CIOO 0800 0400 CIOO~" c...~ D -100 _~H-'+f oTOO [ 1:1&1 .(!) J:a: .~ Ci [ l -23 - LEECH RIVER HYDROGRAPH STA aHAI7 1965 JULY 1.0 1.5 2.0 2.5 AUGUST 1.0 1.5 2.02.5 SEPTEMBER 1.0 1.520 2.5 OCTOBER 1.0 1.5 2.0 2.5 NOVEMBER 1.0 1.5 2.02 FIGURE If [~ ~ [ 500 I' ,t1"t"'!'"+'; 't" f.,. ", 15 2'0215 JULY ~, 11521()2 AUGUST . 1 !:i,EPTEMBER ,-t .,~ ,rt-r- ;...;....,..+ OCTOBER NOVEMBER 1&1 ..~l, X ~[.. a " "loooD '''.00 f] 'il tJ 800 0 700 C 800 n l; [' 400 IOOL. ROO [ 100 [ o [ DECEMBER [ L fj _24 _FIGURE 13 LEECH RIVER [HYDRO GRAPH r-,STA 8HAI7 .,1966 [ ,JA:'lUARY FEBRUARY MARCH APRIL MAY JUNE ~5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 [ •"Il"""""""""""""",,,,,,,,,,,,,,,,,,,,,,,,,""""""""""'"''''''''''''''''''''''''''''''''''""""""""""""'.'"""""""""",, j-" "-i+,.,H+;,;"m::~~[~J 'I,"il ,""'~'~ C!), "'"', ",i (t:,I " ,J J J ;I TTlTflTJ JI j !;J T",TrTi ;I I ,iC~"",,""",TiT!'"'",I "I ITTTTTTTlTTTHTTITTTTTTTTTTT ,.ITfTTTTTTTl''''TTTTTTfTl''''"TTTTTTTTn'"IITfTTTTTCTF, en n,/S ",CT ,''''':';,:t·IO :.'~""":1':':._~"u "".,",,':-t.".,. 1000 .;,~o ",,,',+~* "900;':.,,,","".'m;'''''''H-++ I.,',.t .",o ',.:,*~ 800 ,!.., ,P:.++H+H--!-"C~IT'~":~fh-;,t ","R:,,,"Ti-f,1±t±±t±~TOO a:',"'.. rr'H-H-t+H-t-+tl4,I. aeooL...,,,i ~::'I',"",:r ",CT'err,r ,',~~if" [Jaoor',,,.,'"" -'II1111 to:i:l!iQ.GitJf4 m:dt mtJ:j:iIj: [:400 11__,tL~:IJ 1"I 1,1.,-_!.II. L:•••mr""'.'"Ii1I'IEllllllfllllHIIIIJIIIII 'lllllllllllllllllllll l lllllllllli"III"'1"""""""III"I"""'''''1'"""Ii 11II1 i""i"j III "!,"'i!:"",j.::'I~~=h " [200 ,""".,';''''";" 100 L 0 1111\111 I1II !!!llItllllllll!I!1111111111 iIII lllllllllllllllllllllllll\11111111111111111 iIIII11111111 iI!11I1I1111 i III II!IIIIIIIIII!II iIII II!I!II!III i! i!Ili!1 i 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25LJANUARYFEBRUARYMARCHAPRILMAYJUNE t -25 - SOOKE RIVER ABOVE TODD CREEK FIGURE 14 [ [ HYDROGRAPH STA SHAIS 1963 [ JULY 5 10 15 20 25 ,1+;· :':':.-'.~~+'11-!-.':.r~ ~~+:-:-:",''1 cit ,t',.--!t,+I+i++++,++ AUGUST 5 10 15 20 25 5 SEPTEMBER 10 15 20 25 OCTOBER 5 10 15 20 25 NOVEMBER 5 10 15 20 25 DECEMBER 5 10 15 20 25 r-' -""" ~[J [J ~l0::' « X [-'~-~ o '2000 .ci"".'~~~-'"",;_. r;TIE :f1~.~7_" '> ;-H-i'~. ,-,-i-+-:--' -HI-'+, ..........-i ,::ifr:H ':'+.f..+ i"'. I~+ht'-H+tt:;::q:::::l~ +t'i L..iip ...l.4; t:-:- ·,fF.,..j·" ~.o-" ...!-, .L+n -t.!~-t.~1 .,++ 'H¥ +~I 'I+r+- t-;~f+'+t-;--";i-:-, ;. L+ttI".i4J::W:'-tt++, --t---.>.-....=t:-: "'1";-'"L .~-~"'-'1.Lt+:,f~-'-:+. III'·..·· .:i f.o.rr '."'+~.::~~:±:+:+':>::_~ -t-:'.~-~-s.~ ~-:.i:::-t+i.;'-:.:: ~-,.,.......'"'.-..-;-~ ::~t~ n D c "..:.~ +-j..-"::::J ,I .~ ~-'lii~;~800 l~ ..,:1 700 -EJ L~~p:·T;t+tf::j:-9-i 600 r~ 1500 __0 i+H-H+ f.-H .............·- -'--'-' .=4'.,.':J3f?I?3P""+f =l c~':-'::: ~+2:!: ~~- "]':.;.. n.l~-l.-F· 1~.q.;...J';~ ~+-;"~._~-+-,,-_.,,-":,+!++~""H-;-:--r; +~:;:j:;';:P:I;I.:';";'l'-""ic,-,:r:~::+.:::l ,iI-:-~ ....,; I-i::j.:~.j:r-;:q~C::J::-.: .H-'J-'· f; '-1'+ 14-1 "' "".l~·;-'-':.'"',lL ",'" ,::-i :IT,-t- I~~-H- ''i-Ti- ii +H: 4' t"T"j ~-+-+-: L' r,. ~' h" -:;±hIT.;., 5 10 15 20 25 DECEMBER 5 10 15 20 25 JULY 5 10 15 20 25 AUGUST 5 10 15 20 25 SEPTEMBER. '.'1"-,'~j. ,:i,..,", ,. 5 10 15 20 25 OCTOBER t-i 5 10 15 20 25 NOVEMBER .H+j+"'~iH+F"H..!+' 400 aoo[ 200 100 L o L L [ [ -26 - SOOKE RIVER ABOVE TODD CREEK FIGURE 15 [HYDROGRAPH STA SHAIS 1964 2000'" ;;i 'hi+'-' ,.....,~+j- - h+r+;:+~ H-H1i-H+tt+i-H<:"'" ,,-r"i .,W..l t";';\il:, JUNE 5 10 15 20 25 BBiI :--+1-1l""..2±~+::-i i"~,':Tt',rtfllI:t~~~"+c iT I !++' ~~,,"h,.r-t ,~,l'+h ,~'I ;H-HTH -M-t ,1t'+H:1+!+;,-rtg-h.j.J++:+1+i.j.i+i +i 5 MAY 10 15 20 25 -P. ::;1: $ r-l,O ++-t 4- i'~~7~ ,'J_Oi-7-;,-;-r -r;~ -i :,+ ! APRIL 5 10 15 20 25 ..-r+ ~"'--;-r;TTlI--:i1 L,LLi ,-'-' MARCH 5 10 15 20 25 ,I TTTt rtf ,HH' ,ITTI",'I, FEBRUARY 5 10 15 20 25 +H -1 "'i""!'" n++ ih+!+tH-itHi -;i+i:im.,.,., JANUARY 5 10 15 20 25 im'j::g,+,-Cj- I ..~';':r'++,;rp: la,,",+,,;,J 'T••, I . :, ,..+-4-+ •:,;~ ";.-J;'"--.-:, '.+-;-~'#tW-r ·.;...rr-:r~...,. [ o B [0-u-[~ a: [,~ ,(,) eno o D [ ·'-';-H. ,-H-H-+I+-·iitt Y1f-i+"+,-, 5 10 15 20 25 JUNE p~~:- +Hj'\-· "R#: ~+H-H-H+ -+H~ l+tt'i-i+rr ,H-I~ .,HiH-~ ,.!+Fffii+,-'+ fttttr~'~;<t~ ;HH;';H...w,..;."~~~t...-;+- ,-!'t1f!g~:'-",+'-,,: ,.-'''',-;-;-+;.;.,,-"='+-1,,-:-1 ,,'T"~ H-ti-,-i +-t-t H+H-H-!-t T' me _1""'III!I'IIII!I.'" ,, 5 10 15 20 25 MAY ++"H"1Tn ++ :1+1; t 5 10 15 20 25 APRIL 5 10 15 20 25 MARCH +tU..U Llj, j:ji-; ..1'; 5 10 15 20 25 FEBRUARY 1';'+ WE" ;1,1+t+ -t" C D C C 400'n1i~"6 aoo\t -T+ 200 j [100 _ o 5 10 15 20 25 JANUARY l -27 - SOOKE RIVER ABOVE TODD CREEK FIGURE 16[ r~ HYDROGRAPH ST A SHAIS 1964,~ L~ :jf~-:tnttk~t~h~, g±~ttm·:$~:,':-"~;";-L '~" ,:..;' [ _C' cnL-u;[ a:: «r-' DECEMBER 5 10 15 20 25 ~~;i NOVEMBER 5 10 15 20 25 ,T OCTOBER 5 10 15 20 25 ;itt.. SEPTEMBER 5 10 15 20 25 TrrtTtit tin. i Trrl';+~" 1---; •',"~;~W " ::,,. ,·rFfTTI !;;'+++ ;-8~, "92:F,.::+-+dH r+r+:, JULY 5 10 15 20 25 :~:'~~.j.-i·H+·; ~::.:::r~,,;:;;'·H '-14H..,+I-;-;.+·Hp.;,!lilii, ~lV'-++H'ITT ,-ttH ;::r:¢f+ +-i-t-m±!=H,..,..".." ,'!Ih-tt-!L.r= 2000 C ,mFr'i r1.i C' '~ilifJffi 'j'""':""T,• fJl~J ._-.'i T-iTT ·-H+-r-'"ffi-t+H,-i-i,!I 'iT! 1+ ++7-i1+~l=+==t==-.;.[J :.-~:::t~,.~~~i •~",".;:!±t"~", '-.[,...,,..."~'FfI+R"!F..','',,,"-y ...,...,.. [ [ 600[' SOO .C :::[ i~~200r~,ool w 0 25 ,-! P~~'''''.C..:.,;"~::t:4J:J '.+--"7 +.-,~::.- '1+'~r WiliHr ,""f 5 10 15 20 DECEMBER 'j .'T"!Tf ir H;'· t-' ill 5 10 15 20 25 NOVEMBER Hiim 5 10 15 20 25 OCTOBER I 5 10 15 20 25 SEPTEMBER 5 10 15 20 25 AUGUST ilj.... ;...,-i- ..,.., ~..i 5 10 15 20 25 JULY _-'-:-!-i·;+...t!·t-t'- .-.-t-~ ~Tt. :,.;.W.U.Lf-'- L [ [ -28 - SOOKE RIVER ABOVE TODD CREEK FIGURE 17 [HYDROGRAPH STA SHAIS 1965 JUNE _ 5 10 15 rr2~,25" .,,'r '"'"!-" ;i j"T'-;~'!-:-;::,:+;-',.' .',:.",.".,. I '.,.' .H+H++..!..-r1 THT n _.'.,.~h MAY 5 10 15 20 25,.. APRIL 5 10 15 20 25 MARCH 10 15 20 25 FEBRUARY 5_1015202~5 ,',:,'.H ",...!..~- 1!';;:Ttl 'TiT1T1",IIBrrn~~.'TT~'':''';-H-I"',', ,_~_!1-.l-!~-'•,-=-_ JANUARY RiijlUBlf' .l',.,. ......'.'.,,t ..T',""!" [ 'T~~~ ,";++-!----'--'-+-;--i--' ,_,!i ,,;-ti+t-H-;--,;'; ,.tti-'+H-H ++--t--H ~"j±~,-'-F- ~~-1-',::,.~.,: •.+-i-+":'~-i'r:~ j':;:ffii'".';-;:; t-~· ,'!; ~B~1IE--;r-HH;';,,,·tiL.I ,.,., ;~ iT~;+i ,,',t+'-¢i , -;';,:lid ._.".H'; .' 1""",,,,,1:: ,I "I ,i-l->4-'I,-r li 'ri'; l±'++;-'-i -, ,TT ~~". F.fTf1IT;;.""T tTTj. H iTt" ~I++;; ~~. i"~,t;'T p:, ~, I+- 18;rt;r-, 'atE ·H -+H1tffiHtt ;+T ..;.-;, .lal.i-!-c 0,11" l.t+++H++-I-H+t-H+..,])IHtttuttttfH-tP+t+t..-; '-'ft.",.",.';"t1 .....~, 'n' •;;:;-.'.-~."-i,",'!":.),.-,'"M c D ;-i±±:r::_!±,l-l",.,r~.+;--t++-tm-m 200°1;8f'>':' OJ .>-~:!' , -~:,;.," -'.!.1 .t-++ o u- [.UJ _J C) a: C:~len -- C'..:::---B:"';:·i--+I.:~::-:~ ,....'~ t·~;,; ·H ''''':±±''!b'-•'., •'1 "'"f-::.::r- .H8-H';L.~F"_~~..----r'-o'-...,.l+'"•........,...:.-rio.-'.j ;-1-.'.',",-- ~.,~;.~."..-l.mtts'......,....,.......l ',,',.,,';,;.,l.;...;..; 1,;,1,;-:::+1 ",I ~~ l.1J.LL!..il1-RTTTT '" :I,~ ~1'4 t-!-! ijE ,iT, ,-, 4 ~II4~, j..;."g c:it, '~" j\-i.T "it .,t" ",~..t ,hi ,f-t-; n 91000 [$lJ 8!t 900 Ceoo 700 c o 5 10 15 20 25 JUNE t-+t+-t-+-H+r-i-C·,800 '500 400 0500 200 [100= o 5 [ "n: ~:ilJ.;r~-1 r r 'j ,..-,,-r': , . -,~ +-:-+~ i-h-;--.-:ifTT- 10 15 20 25 JANUARY 5 10 15 20 25 FEBRUARY 5 10 15 20 25 MARCH 5 10 15 20 25 APRIL t, I±1:±ili~', 5 10 15 20 25 MAY j:j:q: j:j:'" ...'1+-17+,-+ -r-t 'tc *,.;. :-...... ,~J+,-;- D -6Z - ]mm~::r:m:::l=++=m~l=I=+m++++=+~m:=q::++++i=p::J::J:Hf+I+=H=t++++m J t±±tttd±tt:t±t±tt±:l:±tl:\:::t::t:n~d±tt:t±t±tt±:l:±tl:f::l::!:tttt:t+td±tt:t:J:l:++:+W ]I-+-+--I--WI--l--I--l-l-+....\--++-I--t--l--I-+-I--I-+++++~f-+++-H+I-H-+-H-H+-H+H-+++++-H-++-H-H-++-t-t+-l ]tttttt±±ttt=l±l±l:±t±tt±:l:±tltt:t+twttl:l=l±l±l:±:I:±tl:f::l::!:tttl=l+l=d±tt:t:J:l:++:+W ]I-+-+--I--WI--l--I--l-l-+....\--++-I--t--l--I-+-I--I-+++H-H-H-Hf--I--H+++I-H-+-H-H+++++rb-+++++-H-++-H-H-++-t+t-i ~J t±±tttd±tt:t=l±l±l:±:I:±tl±:l:±tlt:l::l:t!:jd±tt:tti::l:l:t:t±:l:±tl:f::l::!:tttt:t+td±tt:t:J:l:++:+W J t±±tttd±tt:t±t±tt±:l:±tlt:tt:t:l=l±ttt:jd±tt:t~±:I:±tl:J+l:ttl±ttt:jd±tt:t±:l:±tl+t=1 DI--I--W-J.-l-I.-U-+--l--l--!-+-+-I--I--I-I--~+++-H-+-H+-H-+-I--++++++++-++++1I-+H-1-++++-H-+-I-H++-++-i Dt±±tttllilli±t±tt±:l:±tl±:tt±t:t:l::l:t!:jd±tt:t::t::tt\:t:±:I:±tl~~d±tt:t:J:l:++:++t=1 o t±±ttt±tt:±f±t±tt±:l:±tlt:tt:t:l=l±ttt:jd±tt:t:t:t:tt:t±:l:±tltt:l=l+~d±tt:t±:l:±tl+t=1 [J 1-+-+--I--W1--l--I--l-l-+-+-f..+-I-+.-l--I-+-I--I-+++++H-H-HM++H+++++4+H+-t-H-I-+~H-H-H++t++++-l D t±±tttt±±ttt±t±tt±:l:±tl±±±±:t:t:l::l:t!:jd±tt:t±t±tt:ttl=t:t:ttttt~d±tt:t±:l:±tl+t=1 J t±±ttt::l±l:l:t±t±tt±:l:±tlt:tt:t:l=l±ttt:j=l±l±l:±:I:±tltttl:tttt:l=l+l±ttt:jd±tt:t±:l:±tlm ']m~~~~ma:t:~~Sa:mif~ J ~wum~um~~d±tt:t±:l:±tl+lmmJ+l±ttt:jd±tt:t±:l:±tlH ]EtBmEm'-imi••mBiiitmMmmooBOO J ••••••••- J ••••••••mJ.81 3~n91~ -30 - SUPPLEMENT TO FISHERIES RESOURCE MAINTENANCE FLOW STUDY OF THE SOOKE RIVER,VANCOUVER ISLAND,B.C. On March 1,1979,the Comptroller of Water Rights held a public hearing to consider the application by the Greater Victoria Water District to divert 25,000 acre feet of water from the Leech River.Presentations were made by the Water District, by our Department,and by others who could be affected by the proposed water diversion.Our presentation was based on the contents of the report,of which this is a supplement,and on information on fisheries values (given in the following table) requested by the Water Comptroller at the hearing and forwarded to him subsequent to the hearing. On June 21,1979,the Water Comptroller made his decision (Appendix Sl).It varies from the recommendations given in our report as follows: The Comptroller specified a "cut-off flow"(that is, the flow below which no diversion will be allowed)of 200 c.f.s. on the Sooke River,rather than 150 c.f.s.on the Leech River as our report recommended,although these values are nearly equivalent insofar as fisheries value is concerned. A major difference in his decision is covered by clause (f) which permits diversion from the Leech River at any time of the year,rather than only during the period November 1 to April 1 as our report recommended.This could result in reduced upstream migration attraction flows in October if the Water District were to start diverting during that time (which they would likely want to do after a dry summer). Clause (k),however,provides for some flexibility and participation in water management,allowing changes in the "cut-off flow"(either upward or downward)"so that a higher "cut- off flow"could possibly be negotiated if conditions warranted. The Comptroller agreed with the recommendation that the diversion dam be designed to pass flows as required,and he went further in specifying that two guaging stations be established and maintained by the Water District. [ l~ [ [ [ L [, D o o [j [ C [1-c; [ [ L [ L [ [ [ [ [ [ [ o c o B C U C [ L [ [j t~ -31 - WHOLESALE VALUE ASSOCIATED WITH SALMON OF THE SOOKE RIVER 10 year 1 average escape-Catch Wholesale Estimated ment escape-Estimated value value 1968-1977 ment catch per fish of catch Species pieces ratio 2 -'p'ieces $1977 $1977 chinook 966 3:1 2,898 24.64 71,407 coho 100 1 .2:1 120 10.60 1,272 chum 32,800 1:1 32,800 15.13 496,264 -- TOTAL $568,943 I J\verage annual escapement-1901f-1977. 2 Catch escapement ratios were designed to estimate total coastal salmon populations and consequently tend to be very conservative. . ['~"~~,~~t.:t .J .~t.;.}_.~~l..i"~~i~r J':...n..•.·~.....ll;,_l~L,~' Province of British Columbia Ministry q.\f)T.OF THE -32 - the Envirerlm~n\~~.';.:r VWATER'I?I~HT~m.~t-?Ali 9 1 2 Enclosures The terms of this Water Licence have taken all the foregoing conc.:=rns into consideration. (1)The need for addit:ional water in view of the increasing demand on the Sooke Lake watershed. H.D.DeBeck, Comptroller of Water Rights. o ~"1 f'8.,1...l V Fil c No.0340847 21st'June,1979 ~­~. Yours truly, ~ He:Application for Water Licence by Greater Victoria Water District to authorize cC'lstruction of a dam and tun'1el on the Leech River. I found that evidence and statistics provided by the Greater Victoria Wa~er Board indicated a realistic need for additional water and that suffi~ient lead time is required to provide for the forecast demand. Enclosed is a copy of the Notice of Decision and the Water Licence which I have issued today authorizing the construction .and operation of a dam and tun.'1el on the Leech River. With respect to the effeCt of the darn on fish habitat,evidence was produced by Federal Fisheries members,vlhich convinced me that pro- visicn should be Trude'in the Wat.cr L:i.cci"lC(;lo ensLU~C t.l-iit t11cl"E:. would be no reduction in the amount of \'Jater required to provide adequate water for the needs of the various fish species. (2)The possibility of adverse effects on fish habitat and productivity,and on the envi ronment in general. At the Hearing,concern was mainly directed at b.'IO aspects of the project,namely:-- Attention:W.J.Schouwenburg Dear Sirs: Fisheries Pacific Region, 1090 West Pender St., V<lncouver,B.C. V6E 2P1 [ [ [ [ L o 6 o B C C C [ [ [ [ fj ] l J ] ] '1J ] J J J J 8 ] ] ) J J J J ] LS XION3ddV IN '!HE fv1ATIER OF CERTAIN OBJECTIONS TO THE SAID APPLICATION NOTICE OF DECISION and [ [ [ [ f' [ [ B C C C C [ [ L [ L l l -33 - WATER RIGHTS B~ANCH Ministry of the Environment Province of British Columbia Dated at Victoria,B.C.this 21st day of June ,1979. THAT Greater Victoria Water District has shown good and sufficient reason for the construction of the proposed project and that the proposed project would be in the public interest; ~..-.'/~'-'..'.?:_/...,.,..'f .,-.~&,%/~.~..--.__... L.t/?-....>.c·~~/~/...- H.D.DeBeck, Comptroller of Water Rights. AI'lD THAT a Conditional Water Licence will issue to the Greater Victoria Water District authorizing construction of the proposed project subject to the terms and conditions set out in the said Conditional Water Lic'7-"1ce,a copy cf \·±1ich is heretc attFlched. IN 1HE fv1ATIER OF 1HE WA1ER PeT TAKE NOTICE TK~T following a Public Hearing held by me pursuant to the provisions of the Water Act at Sooke,British Columbia on 1st March, 1979,having heard and duly considered all evidence including exhibits produced at the said Hearing,and having carefully considered all argu- ments submitted both for and against the above mentioned application for a Water Licence,and having considered all representations made wi.th respect to the effects on existing and potential resources,and of the environmental and social impacts of the project,I find: and IN 1HE fv1ATTER OF'AN APPLICATION BY GREATER VICTORIA WATER DISTRICT FOR A vJATER LICENCE TO DIVERT,STORE AND USE WATER OUT OF '!HE LEECH RIVER [ [ [ [ [ [ [' -' o o o G C D C [ [ [ [ c -34 - LAND AND WATER MANAGEMlHl WATER RIGHTS BRANCH MINISTRY OF THE ENVIRONMENT The Province of British Colwnbia -Water Act CONDITIONAL WATER LICENCE Greater Victoria Water District of 479 Island Highway,Victoria,B.C.V9B lH7 is hereby authorized to divert,store and use water as follows:- (a)The source of the water-supply is Leech River and the reservoir is Sooke Lake. (b)The point of diversion and storage is located as shown on the attached plan. (c)Th€datA from which this licence shan hav~precedence is 231~d Fc:bru?,Y"y,i977. (d)The purpose for which the water is to be used is waterworks. (e)The maximum 'quantity of water which may be diverted and stored is 25,000. acre feet per annum and such additional quantity as the Eng~!1eer n~ay from time to time determine should be allowed for losses., (f)The period of the year during which the water may be diverted into storage is the whole year,subject to clause (k).The period dUI"ing which water may be used is the whole year. (g)T~e land upon v/hich the water is to be used and to which this licence is appurLel1ant is the I,vaterworks undertakiny of G('eaLel"Vi(;Lorid i-:aLer'Di~Lr'icL. (h)The works authorized to be constructed are diversion dam,tunnel,canal and dam which shall be located approximately as shown on the attached plan. (i)The construction of the said works shall be commenced on or before the 31st day of Decembel",1982,and shall be completed and the 'tlater beneficially used on or before the 31st day of December,1992. (j)Hydrometric guaging stations shall be constructed,maintained and operated on the Sooke and Leech River to the satisfaction of the Comptroller of Water Rights. (n)The rights granted under this licence are subject to reserves established by Order-in-Council No.156/1909 and by Order-in-Council No.444/1915. (1)The diversion dam authorized under clause (h)hereof shall be·designed to allow a continuous flow in the Leech River in an a~ount to be determined from time to tiw.e by the Comptroller of Water Rights. (m)The \'!crks authorized .under clause (h)hereof shall not be commr:nced until plans of same have been submitted to and have been approved by the Comptroller of Water Rights.Upon completion of construction,the licensee shall submit to the Comptroller of'Water Rights,two copies of drawings of the dam and appurtenances as built,certified by the licensees engineer. -35 - [ [ [ [ [1 [; [ r1lJ B C E o o c n [ [ L [ 52452LicenceNo. ~~~;' ,'f?!~,.--:'~;;~'"7/~.,/-~~?~N ' .0.DeBeck Comptroll .'er of .~·Jater Ri h'"9 loS. not authorize the diversion of water at any time when at a hydrometric guage,located on the Sooke River above 200 cubjc feet per second or less or such other amount as by the Comptrol1er of Water Rights,a!ter consultation and with Federal and Provincial fisheries agencies. Date issued 21st June,1979FileNo.0340847 (k)This licence does the flow of water Charters Creek is may be authorized with the licensee ~ I( Dau s.~.~.~~.~.~.~!~J~' CL 5"2.45'2.. File 034084, eLK 954 .~~#/7/ S'gnat:JTe ~>~~~/~..~/~....................:::::-~~:..~-:=~.~.L _ Qrnl.1tlillliit PrecinctVic\:.o~ia 1 <,,--; '-':1"')'~"f··r·.,'t~ ...t .":'.,«..~::~'.~:.\, :L~..~~.j~~.~*r:C Scalc:40 Chains'to 1 inch MALAHAT DIS1~RICT BLK 754 itlritinl1 VICTORIA WATER DISTRICT ~ i\' :)0 eLK 1419 e 92 B/12 C 8,97--- ...... BLK 1418 I })$00)<£~ 667 I BL:K 569~I J LAKE:l ~I I L.3\.. ~C'CS',<:)~• '0" .. "I //\r l BLK 48,I BLK 486-~/c~ll~-'-~MLKc'II -~L 32 I ~-_..-' cuuu.u~Diversion Ref'.Map w.R.Map Tunnel Canal eLK 486 [LEGEND. ~_!~.-_..: C [ 6 t [ [ [ [ [ [ [ BelK R~.U fj bJ B C