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LAKE HA V ASU (COLORADO RIVER) Water Year 1987 At the beginning of water year 1987, the water level of Lake Havasu, impounded by Parker Dam, was at elevation 448 feet with an active storage of approximately 580,000 acre-feel. During October, November, and Dccember 1986, the reservoir fluctuated between elevation 446 feel and 448 feel. In early April 1987, the reservoir was at elevation 446 reet to provide vacant space for runoff from the drainage area between Davis and Parker Dams, The water level was then raised to an approximate elevation of 450 feet near the end of May, with an active storage of about 620,000 acre-feel. At the end of the water year, Lake Havasu was at an elevation of about 448 feet with an active storage of 570,000 acre-feel. During the water year 11,360,000 acre-feet were released at Parker Dam, all of whieh passed through the turbines for ACTUAL RELEASES WY 1987 IOOOOF& .. .. .. " ,. . NDJFMAMJJASO power production, The total release amount included releases from Alamo Dam on the Bill Williams River. In addition to the releases from Parker Dam, approximately!,31 MAFwere diverted from Lake Havasu by MWD, Diversions from Lake Havasu for the CAP were 356,000 acre-feet during the water year, Space in tbe top 10 feet of Lake Havasu (about 180,000 acre-feet) is reserved by the United States for control of floods and otber uscs, including river regulation, Normally, only about tbe top 4 feet, or 77,000 acre-feet of space, have been used for this purpose since tbe Alamo Reservoir on the Bill Williams River has been in operation. LAKE HA V ASU Reservoir Acre-feet Elevation, feet Maximum Storage Rated Head Minimum Power Surface Area, full Reservoir Length, full 619,400 619,400 439,400 450 450 440 20,400 Acres 35 Miles Powerplant Number of Units Total Capacity 4 120,000 KW 19