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<br />- ..,... ~ <br />",~.L <br /> <br />F. Twin Lakes/Mt. Elbert Forebav and Mt. Elbert Pumoed-Storaqe Powemlant <br /> <br />The storage in Twin Lakes was 129,389 acre-feet (elevation 9195.71 feet) on September <br />30, 1999. The combined storage of Twin Lakes and the Mt. Elbert Forebay was 135,402 <br />acre-feet. Twin Lakes releases to Lake Creek were made throughout the winter to pass <br />the entire flow of the Mt. Elbert Conduit, and to transfer the Project water stored in the <br />reservoir to Pueblo Reservoir, The native inflow was stored in the Twin Lakes Reservoir <br />and Canal Company storage space from November 15 through March 15, A total of <br />42,679 acre-feet of Project water was released to Lake Creek, This water was released <br />such that the flow in the Arkansas River at the Wellsville gage was maintained as close to <br />the average October 15 to November 15 trout spawning flow as practically possible. The <br />combined reservoir and forebay storage reached a low point of 107,777 acre-feet on <br />February 28,2000, and reached its high point of 140,416 acre-feet on July 18, 2000. A <br />total of 10,000 acre-feet of project water was released beginning on July 21 and ending <br />on August 9, to augment rafting flows in the Arkansas River, <br /> <br />At least one generating/pumping unit was available at the Mt. Elbert Powerplant <br />throughout the 2000 water year. The capacity of one unit is greater than the capacity of <br />the Mt. Elbert Conduit. A total of 378,712 megawatt-hours of energy was generated at <br />the powerplant with 1,017,967 acre-feet of water; 111,977 acre-feet came through the <br />Mt. Elbert Conduit, and the remaining 917,614 acre-feet were first pumped to the Mt. <br />Elbert Forebay from Twin Lakes during off-peak electric demand hours. Table 8 depicts <br />the monthly powerplant operation for the 2000 water year. <br /> <br />G. Pueblo Reservoir <br /> <br />The storage content of Pueblo Reservoir was 239,895 acre-feet (elevation 4876.69 feet) <br />on September 30, 1999, which was 174 percent of average, The project did not come <br />into priority during water year 2000; therefore, no new East Slope water was stored, <br /> <br />Table 9 and Exhibit 20 depict Pueblo Reservoir monthly operations during the 2000 <br />water year. The 1999-2000 winter water storage is shown on Exhibit 17, and the winter <br />water releases are shown on Exhibit 18, The pan evaporation at the reservoir is shown on <br />Exhibit 19, <br /> <br />H, Storaqe Contracts <br /> <br />There were eight contracts for storage of non-Project water in Project storage space on <br />the East S lope in effect in water year 2000, Six of those were long-term contracts: the <br />Twin Lakes Reservoir and Canal Company for 54,452 acre-feet; the City of Colorado <br />Springs for 17,416 acre-feet; the City of Aurora for 5,000 acre-feet; the Pueblo Board of <br />Water Works for 5,000 acre-feet; Busk-Ivanhoe, Inc., for 10,000 acre-feet; and the <br />Homestake Project for 30,000 acre-feet. The remaining contracts were interim one-year <br /> <br />7 <br />