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WATER SUPPLY <br />The District has direct flow and storage water rights from the <br />South Platte River. The water is diverted during high spring flows <br />to fill the three reservoirs owned by the District and to irrigate <br />about 32,800 acres of land. When the water rights are out of <br />priority and no further water can be diverted from the South Platte <br />River, the District then uses water from the reservoirs. Bootleg <br />Reservoir is the highest elevation reservoir in the system which <br />offers the greatest flexibility for providing water to all of the <br />water users. In an average year the District provides about 30,000 <br />acre-feet of storage water to 32,800 acres, this is in addition to <br />the direct flow water when available. <br />The reservoir would be filled with irrigation water from the Audson <br />Canal which diverts water from the South Platte River. There is <br />very little flow in Box Elder Creek except during flood flows. In <br />order to maximize the flood control benefits and provide irrigation <br />water, the reservoir could be operated so that it would be the <br />first storage water released by District. In this manner the <br />reservoir would normally be empty by mid to late July, in time for <br />the late summer and fall flood season. <br />RESERVOIR <br />Table 1 shows the elevation-area-capacity values for the reservoir <br />which are based upon the original filing in 1906 and recent Corp <br />estimates. The Corp developed a different elevation-capacity which <br />uses a bottom elevation of 5084 feet rather than 5068 feet and <br />total storage of 4900 versus 6209 acre-feet. The reasons for the <br />discrepancy are not known; a guess might be that the reservoir has <br />filled with sediment since 1906. <br />The reservoir capacity at the proposed spillway crest of 5097 feet <br />is estimated to be 2817 acre-feet, with sediment occupying from <br />1,000 to 1,300 acre-feet. The storage capacity below the spillway <br />is assumed to be 1,800 acre-feet of which 1,500 acre-feet can be <br />used for irrigation storage early in the season and the remainder <br />for flood storage. <br />The 240 square mile drainage area is estimated (Corp) to have a 100 <br />year flood of 8,000 cfs and a PMF of 497,000 cfs. Reduction and <br />storage of all or part of the 100 year flood flow is the primary <br />flood benefit. The dam and spillway was designed to pass larger <br />floods. - <br />Bootleg Dam 4 <br />