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<br />MINIMUM REQUIRED RESERVOIR RELEASES <br /> <br />Minimum releases are required from some system facilities to satisfy prior water rights and fish <br />and wildlife requirements. <br /> <br />On January 19, 1961, the Secretary of the Interior established specific guides for water releases <br />out of Lake Granby, which satisfy fish requirements. A release from Lake Granby of 20 fr3 fs is <br />required from October through April of each year. During the remaining months of the year, the <br />control point is almost 3 miles downstream from the dam at the YMCA gauging station. <br />Although the seepage from Granby Dam and some inflow from tributaries enter this section of <br />stream, there are also diversions for several irrigation ditches between Granby Dam and the <br />control point. <br /> <br />Except in years of subnormal inflow, a flow of 75 fe/s during the May-July period, 40 ft3/s <br />during August, and 20 ft3fs during September is required at this location, downstream of Lake <br />Granby. The flow during the May-September period can be reduced if forecasts indicate that the <br />inflow during the water year to Shadow Mountain Lake, Grand Lake, and Lake Granby (less the <br />decreed rights in the reach of the Colorado River between Granby Dam and the mouth of the <br />Fraser River) and the water capable of being pumped from Willow Creek Reservoir during that <br />year, are 230,000 acre-feet or.less. <br /> <br />The following reduction of fishery flow below Lake Granby will apply on the basis of a forecast <br />to be made by the Bureau of Reclamation during the last week in April, using information from <br />all available sources. <br /> <br />Forecast Inflow <br />in Acre-Feet <br /> <br />Percentage Reduction <br />in Minimum Release <br /> <br />220,000 - 230,000 <br />210,000 - 220,000 <br />195,000 - 210,000 <br />Less than 195,000 <br /> <br />15 <br />20 <br />25 <br />30 <br /> <br />Adjustments will be made in the reductions, when appropriate, based on revised forecasts and <br />consideration of actual flows during May, June, and July. <br /> <br />Willow Creek below Willow Creek Reservoir is not considered a fishery resource since an <br />irrigation ditch a short distance below the dam generally uses the entire flow in the late summer <br />months. In the Secretarial determination, no releases were provided to maintain Willow Creek as <br />a live stream. <br /> <br />A minimum release of 35 fe/s for September and October, 45 fe/s from November through <br />December, 20 ft3/s from January through May, 50 ft3fs in June and July, and 40 ft3/s in August or <br /> <br />]8 <br />