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<br />COLORADO WATER CONSERVATION BOARD <br />823 State Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br /> <br />l~ay 1982 <br /> <br />APPLICATION FOR FEASIBILITY STUDY: <br /> <br />BOSS LAKE <br /> <br />INTRODUCTION <br /> <br />The Upper Arkansas Water Conservancy District (District) was <br />authorized by court order in 1979 to assist water users of the <br />District to develop supplemental water supplies and a means of <br />better utilizing the waters of the District. After performing <br />preliminary investigations, the District has identified a <br />potential project, Boss Lake, which may assist its water users. <br /> <br />PROJECT <br /> <br />Senate Bill 335 (1981 Session), a copy of which is attached <br />(Appendix A), provides that the District could, upon agreement by <br />the Board of County Commissioners of Chaffee County, assume <br />responsibility for Boss Lake. The District is willing to assume <br />this responsibility and also rehabilitate the Boss Lake dam and <br />reservoir to its original capacity. <br /> <br />The dam was constructed in 1893 and enlarged by legislative <br />direction in 1919, to be maintained by Chaffee County. The dam <br />is 45 feet high and has a crest length of 285 feet and a crest <br />width of 10 feet. The original storage capacity is believed to <br />have been approximately 700 to 800 acre-feet. The structure is <br />an earthfilled, rock-core, wall-type dam. OVer the years some <br />leakage had been observed on the downstream face of the dam. <br />This condition resulted in an inspection by the U.S. Forest <br />Service and a subsequent review by the State Engineer's office. <br />Ultimately, the spillway, which is built in solid rock, was <br />lowered as a safety measure. This reduced the storage capacity <br />of the reservoir such that its present capacity is about 300 <br />acre-feet. <br /> <br />It is the desire of the District to conduct a study to <br />determine the costs and feasibility of repairing the dam <br />structure and raising the spillway to allow storage of the <br />original maximum quantity of water. This additional water would <br />be used by the District to supplement supplies currently <br />available to its water users. <br /> <br />d123 <br />fs/uacd <br />