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<br />'> <br /> <br />'-"' <br />') <br />e <br /> <br />e <br /> <br />e <br /> <br />" <br /> <br />. <br /> <br />s <br /> <br />:fE ct COLORADO <br />- <br /> <br /> <br />Colorado Water Conservation Bo <br /> <br />Department of Natural Reso s <br />721 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Phone: (303) 866-3441 <br />FAX: (3031 866-4474 <br /> <br />Roy Romer <br />Governor <br /> <br />James S. Lochhead <br />Executive Diredor, DNR <br /> <br />Daries C. Lile, PE. <br />Director, eWeB <br /> <br />TO: <br /> <br />Colorado Water Conservation Board Members <br /> <br />FROM: Bill Green, P.E. <br />Project Planning and Construction Section <br /> <br />DATE: November 12,1996 <br /> <br />SUBJECT: Agenda Item 10.d., November 25-26,1996 Board Meeting - Water Project <br />Construction Loan Program - Requests for Reconnaissance and Feasibility <br />Loan/Grant Approvals - DeWeese-Dye Ditch and Reservoir Co. - DeWeese <br />Dam Rehabilitation <br /> <br />BACKGROUND <br /> <br />The DeWeese-Dye Ditch and Reservoir Co, of Canon City owns and operates DeWeese Dam <br />which is located on Grape Creek about five miles north of West cliffe in Custer County (please <br />see the attached map ). DeWeese Dam is a concrete masonry structure which consists of an <br />original structure built in about 1903 and two raises of the dam by four feet and eight feet <br />constructed separately in years between 1903 and 1931. The present dam has a height of 63 feet <br />and impounds about 4,000 acre-feet of water which is used primarily for agricultural purposes. <br /> <br />The issue of concern is the condition of the top 12 feet of the dam which show considerable <br />spalling and cracking. The dam is not now under restriction by the State Engineer's Office but <br />the dam inspector for Division 2 is concerned about the integrity of the structure during a major <br />flood event. <br /> <br />The Company has retained GEl Consultants of Englewood to conduct a feasibility study to <br />include an assessment of the dam and an analysis of alternatives for any rehabilitation work that <br />may be required, <br /> <br />DISCUSSION <br /> <br />The first part of the feasibility study consisted of borings in the upper portions of the dam and <br />laboratory analyses of the material in the top 12 feet of the structure, This work was completed <br />in June of this year at a cost of$19,500. The company received a CWCB Small Dam Site grant <br />of $5,000 to assist in this part of the study, <br />