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<br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. fro, "'; <br />11.:..0 <br /> <br />West Slope recreation interests requested that the reservoir water leve~ <br />not be drawn down below elevation 7706.0 (53,122 acre-feet), which is <br />two feet above the bottom of the forest Service boat ramp. Under reasonable <br />maximum and most probable inflow conditions, the reservoir would theoret- <br />ically be drawn down to this elevation. <br /> <br />However, under reasonable minimum conditions, the lowest reservoir water <br />level would be somewhat above this elevation. In each case, the reser- <br />voir would fill by the first of July to provide optimum recreation <br />benefits during the summer months. <br /> <br />After July 1, operating plans call for drawing the reservoir down to a <br />point two feet below the spillway crest and holding it at this stage <br />until August 1. During August, releases will not be dropped below 150 <br />c.f.s., as requested by Colorado River interests. September releases <br />will be maintained at 100 c.f.s. at the request of the Colorado Division <br />of Wildlife in order to optimize downstream fishery. <br /> <br />Table 4 and Exhibit 8 show the anticipated 1976 water year operation of <br />Ruedi Reservoir. <br /> <br />Turquoise Lake <br /> <br />Reservoir Inflow <br /> <br />Inflow to Turquoise Lake for water year 1976 will be from three sources: <br />Busk-Ivanhoe imports, fryingpan-Arkansas Project imports, and native <br />flow of Lake fork Creek. No imports are being considered in this report <br />for the Homestake Project as the Homestake Tunnel has been shut down for <br />extensive repairs in 1976. Estimates of inflow from Busk-Ivanhoe and <br />native Lake Fork Creek flow were made using historical records and <br />probability analysis. <br /> <br /> <br />The 10-, 50-, and 90-percent chance values were obtained from the <br />probability curves shown on Exhibits 1 and 2 and are considered to <br />represent the reasonable minimum, most probable, and reasonable maximum <br />inflows, respectively. Monthly distribution of these values was made <br />in accordance with historical records. Fryingpan-Arkansas Project im- <br />ports for the three conditions are derived from Exhibit 2 and are <br />discussed in more detail under Western Slope Collection System. <br /> <br />Minimum Reservoir Release <br /> <br />The minimum release is to be maintained at 10 c.f.s. from May through <br />October and 3 c.f.s. for November through April, or natural inflow to <br />the reservoir, whichever is less. Irrigation releases or bypass of <br />natural flow is sufficient to meet minimum flow during the irrigation <br />season. At times when CF&I is on storage and no irrigation release is <br />being made, the minimum release will be maintained and stored in <br />Pueblo Reservoir. <br /> <br />13 <br />