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<br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />It was the desire of the Study Oversight Panel to allow multiple fills of Pot Hook <br />Reservoir. Since the decreed storage amount exceeds the USBR storage capacity (60,000 <br />acre-feet), the multiple fill operation would allow full utilization of the decreed storage <br />amount providing the water is available. With a one fill operation, 60,000 acre-feet would <br />be the most water that could be stored in any given year. For Scenario No. 1, Pot Hook <br />Reservoir was modeled as both a one-fill and a multiple fill reservoir. The resulting Little <br />Snake River flows at Lily, Colorado are presented in Tables D.2 and D.3 (see Appendix <br />D). There is less than 1 percent difference between the average annual flow for the one- <br />fill operation (271,486 acre-feet per year) and the multiple fill operation flows (271,042 <br />acre-feet per year). Therefore, the results of the one-fill operation were used to <br />determine the impact of the Pot Hook project upon Lily flows. <br />A comparison between Scenario No. 1 flows (at Lily) for the one-fill operation and <br />Water Development Baseline flows is presented in Table DA. Based upon this <br />information, the implementation of the Pot Hook Project as modeled would result in an <br />average reduction in the Water Development Baseline annual flow at Lily of 34,682 acre- <br />feet. Scenario No. 1A reduced the Water Development Baseline flow by an average of <br />34,255 acre-feet while Scenario No. 1B reduced the flow by an average of 38,258 acre- <br />feet. These comparisons are shown in Tables D.6 and D.B. <br />The annual average values given as comparison show the algebraic sum of the <br />monthly difference. During some months the flow at Lily can be greater or less than the <br />Water Development Baseline. More meaningful comparisons are shown on hydrographs. <br />38 <br />