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<br />~ <br /> <br />~ <br />. .~ <br />J"I n, ') 'gn, <br />Hi'. \.) .. .... <br /> <br />l?- ....~- <br />Ii :;'M I I <br />Irsc--'L I <br />r .' <br />11<:," :~ <br />m' <br /> <br />..'\ <br />! ] <br />I ! <br />--' <br />i ' <br /> <br />J.w. PATTERSON & ASSOCIATES, INC. <br /> <br />C'Cu.:JAAr.......: .j.,,';... :~.;;--: <br /> <br />CONSULTING ENGINEERS - GROUND A~D SUEF.A,CE INATEP, HYOP.Oll9~~.f.l~~~'T'S. <br />GEOLOGY. DRAINAGE. AND COMPUTER SIMULATION STUDIES <br /> <br />I, <br /> <br />January 5, 1990 <br /> <br />Colorado Water Conservation Board <br />Department of Natural Resources <br />721 State Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br /> <br />Attn: Mr. William McDonald, Director <br /> <br />RE: Storable Inflows and Required Releases for the Genesee <br />Water and Sanitation District, Job No. 0557. <br /> <br />Gentlemen: <br /> <br />This letter describes analytical procedures used to estimate <br />storable inflows and releases by the Genesee Water and <br />Sanitation District (Genesee) for the Bear Creek Lake Operation <br />Study, The procedures are consistent with the June 30,1989 <br />memorandum from E.I,.Jencsok to the study participants regarding <br />criteria and assumptions for the study. The study period is <br />based on water supply and water demand conditions as existed <br />from 1949 through 1957. These years represent drought, high <br />runoff, and conditions prior to significant urban development. <br /> <br />WATER RIGHTS PROPOSED FOR STORAGE IN BEAR LAKE RESERVOIR <br /> <br />The study assumes that Genesee will use its pioneer-Union Ditch <br />Priority Nos. 11 and 15 for storage in Bear Creek Lake when <br />those rights are not needed to meet the direct flow demand of <br />the Genesee system. Genesee may store water available under <br />other water rights, including decreed conditional water storage <br />rights with an October 2. 1971, appropriation date. Genesee <br />would"obtain court approval of Bear Creek Lake as an alternate <br />place of storage for those rights. In that eveht, Genesee would <br />also use its more senior Pioneer-Union water rights to provide <br />water for storage in Bear Creek Lake when the junior water <br />storage rights may be out-of-priority. . It wa~ not necessary for <br />the purpose of this study to analyze in detail the yield of <br />righ ts other thaR_}he Pioneer-Un ion rights. <br /> <br />The Pioneer-Union Ditch originally diverted from the north bank <br /> <br />6825 East Tennesseg Avenue. Bu;lding 2. SUite 250 . Den'/er. Cc!cia-:c E0222 . ;S(;:l; 321,;-1295 <br />