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TAAPPEB 1CI~I~6 IBC. <br />July 2ti, 1995 <br />cEltr>FIED tezo67or>bal l <br />Mr. John a Kuzar <br />District Manager <br />US Department of Labor - MSHA <br />P.O. Box 25367 <br />~ Denver, CO 80225 <br />Dear Mr. Kurer: <br />Su6jeet: Annual impoundment Report <br />Coyote Dam (i.D. No. 1211-C0~9-028.'i8-Ol) <br />Tapper Mice (05-02838) <br />The structural integrity of Coyote Dam has remained uncJ~anged All appurtenant structures <br />including trash racks, decant, valves and discharge CMP are in place and operating as designed. <br />There have been rro modifications to the structure in the past year. <br />During the past year, the dam remained virtually dry at a sediment elevation of approximately 6298.0, <br />until the begimrurg of May, 1996. During the month of May, the water level increased to a maximum <br />elevation of 6301.0 on June 6, 1995. This wrresponds to apprmdmately 3.0 feet of impcwrided <br />water. During May, 1996, Trapper recorded 6.21 iurbes of precipitation -the wettest month oa <br />record Since June 6, the water level has steadily declined to an elevation of 6299.3 on July 25,199s. <br />It is estimated that 1.0 m 1.5 feet of water is currently impounded. This would indicate s sediment <br />elevation correlatable to 6298.0. This was the average sediment elevation in a dry condition <br />determined by a direct sediment survey in 1993. <br />These correlations indicate the capacities determined by that survey are still representative for Coyote <br />Dam It is estimated that the sediment volume is 37.9 sae-feet and the runoff capacity m the <br />emergency spillway is 98 acre-foot <br />If you have arty questions <br />report, please call. <br />Sincerely, <br /> <br />Mww~n~+.murss <br />o rvtr. <br />25518 ~ ~ iNarti w. Wehmanen <br />8 sr. Project Engineer <br />~, CO PE No. 25518 <br />P.0. Box 187 Craig, Colorado 81626 (303) 824-4401 <br />