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. ~ c"" , to~-l The planned operation of Turquoise Lake for water year 1988 will be to maintain the reservoir at or near capacity by the storage of Project imports, Busk-Ivanhoe imports, and Homestake Project imports. The Pueblo Board of Water Works and the City of Aurora each own one-half of the Busk-Ivanhoe imports. The Pueblo water will either be bypassed through Turquoise Lake for storage in' Clear Creek Reservoir or for direct flow usage at Pueblo or be stored in their long-term storage space in Turquoise Lake. The City of Aurora water wi 11 be stored in their long-term storage space. The city of Colorado Springs can store all of the native inflow to Turquoise Lake when they are in priority (maximum of 17,416 acre-feet). Water released from Turquoise Lake in excess of either instream minimum flow or flow to meet downstream senior rights along Lake Fork will be diverted into the Mt. Elbert Conduit. The water will flow through Mt. Elbert Powerplant and then be released to the Arkansas River from Twin Lakes via Lake Creek. The minimum release into Lake Fork is 15 cubic feet per second, or natural inflow, whichever is less. . Table 14 and exhibit 22 show the proposed operation of Turquoise Lake in water year 1988. E. Federal Fish Hatchery and Halfmoon Creek Diversion The Federal Fish Hatchery near Leadville, Colorado, will be supplied flow-through Project water at a rate of up to 6.7 cubic feet per second as has been done in past years. Thi s fl ow is released from Turquoise Lake through Mt. Elbert Conduit to the fish hatchery and then into the Arkansas River. The flow is later stored, less appropriate transit losses, in Pueblo Reservoir. The planned operation of Halfmoon diversion is to divert all the flow in Halfmoon Creek, to the maximum diversion capacity of 150 cubic feet per second, which is in excess of the downstream call on Halfmoon Creek or the instream minimum flow. The diverted flow will pass through Mt. Elbert Powerplant and will be released to the Arkansas River via Lake Creek. . F. Twin Lakes/Mt. Elbert Forebay Twin Lakes/Mt. Elbert Forebay will be operated to maximize power generation. Twin Lakes will always: 1. maintain sufficient water in storage to be pumped into Mt. Elbert Forebay to allow 1 day of genera- tion or 2. provide sufficient space in Twin Lakes to allow the evac- uation of the I-day demand from Mt. Elbert Forebay. At no time will the water surface elevation in Twin Lakes be less than 9168.7 feet while the powerplant is in service. 25