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<br />. <br /> <br />. <br /> <br />. <br /> <br />COLORADO WATER CONSERVATION BOARD <br />823 State Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br /> <br />January 5-6, 1984, Board Meeting <br /> <br />MONUMENT RESERVOIR REHABILITATION <br /> <br />Introduction <br /> <br />The Monument Dam and Reservoir are located in Gunnison <br />National Forest, Gunnison County, about 6 miles northeast of <br />paonia, Colorado. These facilities are owned by the Minnesota <br />Canal and Reservoir Company. They furnish about 50% of the water <br />supply for 2100 acres of various types of crops in the paonia <br />area. Available records show that these facilities were con- <br />structed about 100 years ago. <br /> <br />Problem <br /> <br />The dam shows signs of seepage on the downstream slope and <br />it has been determined that it may be unstable when filled to <br />near capacity. The main problem, though, is that with the <br />existing spillway the dam would be overtopped and could fail <br />completely during a high hazard design storm. Due to this situa- <br />tion, the State Engineer has limited storage in the reservoir to <br />440 AF, which is 80 AF less than the full capacity. Failure of <br />the dam would not only deprive the users of valuable irrigation <br />water, but it would also cause substantial damage to private and <br />public lands and facilities, as well as possible loss of life. <br /> <br />Current Status <br /> <br />In July, 1980, the Minnesota Canal and Reservoir Company <br />submitted an application to the CWCB for assistance. The Board <br />subsequently authorized 50% funding for a feasibility study on <br />the proposed project. That study has now been completed by <br />Armstrong and Associates, Inc., a Grand Junction consulting <br />engineering firm, and is the basis for recommendations on the <br />project. <br /> <br />Proposed Project <br /> <br />The project, as proposed, would stabilize the dam by rein- <br />forcing the upstream and downstream slopes, adding filter drains, <br />adding a toe drain and increasing the capacity of the existing <br />spillway. It is anticipated that this project would require two <br />construction seasons to complete. The estimated cost is <br />$794,160. <br /> <br />524 <br />ag/10/c <br />