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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Lottis Creek was obtained by prJportioning the flows of Taylor River <br />below Taylor Park Dam by drainage area ratio. The average annual <br />virgin flow of Taylor River below Taylor Park Dam was det,~rlnined to <br />be 148,000 acre-feet. The yield of the Union Park Reservoi r was <br />determined under two scenarios. The assumptions made in each <br />scenario and the yield under each scenario are presented in Table! <br />111-3. The study concluded that the firm annual yield of the Union <br />Park Project ranged from 58,700 to 94,700 acre-feet per year. The <br />details of the assumptions used in the two Sc~narios are also <br />presented in the same two tables reFerenced in this section. <br /> <br />3. <br /> <br />Colorado Water Resources and Po~er Development Authoritv (May, 1989) <br />In May, 1989, the Colorado Water Resources and Power Development <br />Authority (CWR&PDA) pulll i shed a pre-Feasibil ity study of the Upper <br />Gunnison-Uncompahgre 8asin. The study was conducted by HDR <br />Engineering, Inc. under an agreement with CWR&PDA. <br /> <br />This study used data from three gaging stations to assess basin <br />hydrologic character'istics. These gages were 1) Taylor River at <br />Almont (corrected for Taylor Dark Reservoir Storage and release), 2) <br />Lake Fork at Gateview (uncorrected), and 3) Gunnison River flow <br />below Crystal Reservoir (estimated virgin f10W). Tile hydrologic <br />characteristics of the three gaging stations are presented in Table <br />! 111-4. <br /> <br />-29- <br />