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<br />1.. <br /> <br /> <br />. <br /> <br />. <br /> <br />BEAR CREEK DAM AND LAKE <br />BEAR CREEK, SOUTH PLATTE RIVER BASIN, COLORADO <br />1989-1990 REGULATION <br /> <br />The Omaha District entered into two temporary one year storage con- <br />tracts for municipal and industrial water supply under Section 6 of the Flood <br />Control Act of 1U" (Public Law 3",78tb Congreu), pending development of a <br />long-term contract under the Water Supply Act of 1958, as BIIIended ("3 tI,S,C. <br />390 b-f). The first contract dated September 17, 1987 was for 25 acre feet <br />with the Indian Hills Water District, Tbis contract was renewed on December 5, <br />1989. The second contract dated April 1, 1988 was with the Town of Morrison <br />for "9 acre feet of storage. This contract was renewed on April 1. 1990. The <br />cost of storage per acre-foot i~,~ach of these contracts is $1,650 and $1,726, <br />respectively. <br /> <br />In response to the contracts for temporary water storage a revised <br />Memorandum of Understanding (MOU) between the Corps of Engineers and the State <br />of Colorado was signed on June 20,1988; This memorandum supersedes the <br />previous MOU dated Hay 11, 1977, Under normal conditions the Bear Creek DBIII <br />outlet works is set to automatically pass streamflow up to 500 cfs when pool <br />elevations are above the drop inlet-outlet weir crest of 5558 feet MSL, When <br />conditions warrant, higher releases are made by opening two slide service <br />gates in the dome type gated control structure buried under the embankment, <br />Under the revised MOtl, the State Engineer or his representative will determine <br />the storage and releases necessary to satisfy downstream water right <br />requirements when the pool level is below elevation 5559 "ft MSL. Elevation <br />5559 is one foot into the flood storage zone and was selected to allow <br />flexibility in targeting authorized pool levels, Bear creek Reservoir was not <br />made operational during the reporting period as bas been done in the past, <br /> <br />The State of ColoradO, Department of Natural Resources, Division of Game, <br />Fish and Parks in a letter dated October 1, 1970 agreed to provide water for <br />the initial filling and replenishment of evaporation losses from the <br />recreation pool, by purchase or other means, consistent with Federal and State <br />laws to assure effective operation of the project for recreation. For the <br />1990 irrigation season, tbe Colorado Department of Institutions provided its <br />full entitlement to the Simonton Ditch to replace the evaporation losses from <br />the recreational pool, <br /> <br />Runoff during the reporting period was 47 percent of normal. snowmelt <br />runoff occurred during February and March with inflows reported at 92 percent <br />of the historic average, Record low inflow of 250 AF (8\ of normal) occured <br />in August 1989. A total of 201 AF of the 28,757 AF flood storage zone was <br />utilized, No flood control was achieved during this period, <br />