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<br />3581 <br />34 <br /> <br />RUEDI DAM AND RBSER\'OIR, COLa, <br /> <br />. A.summary of the reservoir operation stndy (Aug. 1D~D~Jnly 1D4S)' <br />']11 terms of average annual quantitIes of water In acre-feet follows <br />fol' (be W-yenr period. <br />. ..\lthough t.he a.,-crage annual municipal and industrial water re. <br />le:lse from Ruedi Rese.rvoir is 34,nOO acre-feet, eXl1mination of ill- <br />divi,lual years (May through April) in the stndy disr:loses tha~, in <br />years of low stream flows such as ID~H, 1D;14. and 1940, the req11lred <br />j'eleases would be 66,000, 70,000, and 61,000' acre-feet, respeet.ively, <br />all hasefl upon 2014 requirements. HlIedi neseryoir~ therefore, would <br />pro\'ide sl1bstHlIt.la.1 water supplies from storage 111 those ye,ars of low <br />st.ream fton's. <br />Average annual releases to <l,'oid spills and additiolllll willter "ater <br />represent undependable yields as they would not ue arailable ill <br />crit.ical years. <br />"'1tll'respect to releases f()r n.Yolda.nee of sp'H~~ it. was a~s\1med that. <br />by April 1 of eadl year a forecast. of intlow :llld requirecl releases <br />wo1l1(1 be made for the e.nsuing sprin,g- and Summer months. In case <br />any of t.he forecasts iIHlil:atC'd tJmt. spills would occur if only releases <br />foJ' mandatory bypasses lll1d nlllnicipa.l and industrial water reqllire- <br />lllcnts were made, Uwn additioHal rE;'leases would be made in ~\lch a <br />ll1llTlner as to make the totnl reservoir out.How quite uniform and to <br />enhance the operation for flood oont.rol. Such releases to avoid Rpills <br />mig-ht. enhance fish flows :1I1d he heneficial to power generation, if any, <br />and possibly for downstream in'igat.ion use. <br /> <br />INFLOW <br />Undepletell flow at. RuedL______________________________________.__ <br />Less deJlletions: <br />BlJ.'<k-Iv3nhoe dh"ersiomL_____________________________ 4,400 <br />Fryingpan-Arkan~as diversions_________________________ 57,000 <br /> <br />.41!Crage <br />annual <br />flcrc-Jeet <br />171, 500 <br /> <br />62,300 <br /> <br />Depleted resenoir inflow________h__________________n_n_________ 109,200 <br />Less reservoir emporatioll_________________________________________ 800 <br /> <br />Net reservoir water supply __________________________________ 108.400 <br /> <br />OUTFLOW <br /> <br />Dnwn"tream rights and Fryingpan-Arkansas replacell1enL___________ <br />Fish flows: <br />Ideal requir{.menL___________________________________ ::14,100 <br />Lef;s ROl'ky Fork inflows______________________________ -S,100 <br />Less creditAble out.tlow for downstream rights nnd re- <br />p13cement_________________________________________ -1 j, 500 <br />Les~ natural streamflow shortages_____________________ -5,2nO <br />X' ~t tiSJl releases___ _ _ __ _ _ __ __ _____ _ _ _ _ _ _ _ _ ______ __ _ ___ _ _____ <br />Additional relf'a.<:es for Illullicipnl nnd inon."ltrial wnter ______________ <br />Rt'l('3.'<:e~ to H.Vllid spills____________________________________________ <br />Undepemla hIe winter rele3,<:es___ _ ______ ____ ___ ~ _ ____________ <br /> <br />20,000 <br /> <br />1 ~3. 300 <br />34,_ <br />22,1300 <br />7,!)()() <br /> <br />Total reservoi r outflow _ ________ ___ ______ ____ _ _______ ___ _ _ --- <br />1 Availnbl~ fur Ot)wn!;trcllm munleipal aDO IIl(]u~trJlll u~e. <br />Althou,!!h t.he operation st.udy sho\\'s that the.re would be no releases <br />requirect for municipal find industrial water during winter months, <br />some releases would. be made. in t.hese months in sOllle years in addition <br />to t,he ma.1Hlatory l'ele"-lses eXplained previously. Studies show t.hat <br />reserroir eontent'could be drawll down to G7,000 >lcre-feet by Marell31 <br />in allY veal' and that. a.ll manda.tory and mlUlicipnl and industrial water <br />relea.se~ requirements could still be IneL during t.he ensuing year even: <br /> <br />108.400 <br />