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<br />ro ~~.C', <br />'i.{..';U <br /> <br />C. Twin Lakes Reservoir and Canal Comoanv/Frvinqoan-Arkansas Proiect <br />Exchanqe <br /> <br />The Bureau of Reclamation is obligated to maintain minimum streamflows in the Roaring <br />Fork River by the authorizing legislation of the Project. This is accomplished through an <br />exchange of water with the Twin Lakes Reservoir and Canal Company. On October 1, <br />1999, the company began bypassing water into the Roaring Fork River on the West Slope <br />in exchange for Project water stored in Twin Lakes on the East S lope, The exchange was <br />performed per the operating criteria as shown in Appendix C, The total amount of the <br />exchange at Twin Lakes Reservoir was 1,696 acre-feet. The monthly summary of the <br />exchange is also shown in Appendix C, <br /> <br />D, Turauoise Lake <br /> <br />On September 30, 1999, there were 128,881 acre-feet (elevation 9866,86 feet) of water <br />stored in Turquoise Lake, which was 132 percent of average, Releases to Twin Lakes <br />through the Mt. Elbert Conduit drafted Turquoise Lake to 96,414 acre-feet (elevation <br />9849.09 feet), the lowest storage of the water year, by May 9, 2000, There were <br />110,300 acre-feet (elevation 9858.47 feet) of water in storage at the end of the water <br />year, which was 117 percent of average, <br /> <br />Hlimestake Tunnel imports totaled 22,958 acre-feet during the water year and were 92 <br />percent of average. Busk-Ivanhoe imports totaled 5,005 acre-feet, which were 93 percent <br />of average, and were divided equally between the Pueblo Board of Water Works and the <br />City of Aurora. Project water imports thro~gh the Boustead Tunnel totaled 44,830 acre- <br />feet and were 70 percent of average, <br /> <br />Exhibits 8 and 9 show the precipitation and pan evaporation at Turquoise Lake. Exhibits <br />5, 6, and 7 show the monthly imports through the Boustead, Homestake, and <br />Busk-Ivanhoe Tunnels, respectively. Table 6 and Exhibit 10 depict the.moathly operation <br />of Turquoise Lake during the 2000 water year, <br /> <br />E. Mt. Elbert Conduit/Halfmoon Greek Diversion <br /> <br />During water year 2000, 79,441 acre-feet of water released from Turquoise Lake and <br />7,703 acre-feet of water diverted from Halfmoon Creek were conveyed through the Mt. <br />Elbert Conduit to the Mt. Elbert Forebay, and subsequently to Twin Lakes through the <br />Mt. Elbert Powerplant. An additional 3,290 acre-feet of water were released into the <br />conduit from Turquoise Lake for use by the Leadville Federal Fish Hatchery, The water <br />delivered to the hatchery was returned to the Arkansas River and stored in <br />Pueblo Reservoir. <br /> <br />6 <br />