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CRDSS <br />TASK MEMORANDUM 1.15-20 <br />Water Rights Planning Model <br />Dallas Creek Project (Ridgway Reservoir) - Project 7 Water Authority <br />1.0 ISSUE <br />This memorandum describes the operation of the Dallas Creek Project and its principal component, <br />Ridgway Reservoir, constructed on the main stem of the Uncompahgre River near the Town of Ridgway. <br />The purpose of this project is to provide supplemental water supplies for municipal, industrial, and <br />irrigation uses in the Uncompahgre valley. This memorandum also describes the operation of the Project <br />7 Water Authority, which was formed to provide domestic/municipal water treatment capabilities for its <br />participants, each of which is responsible for providing raw water to the Project 7 treatment plant. These <br />supplies derive, in large part, from municipal allocations in Ridgway Reservoir. <br />The repayment of the Dallas Creek Project and the normal operation and maintenance of Ridgway <br />Reservoir is the responsibility of the Tri-County Water Conservancy District (TCWCD). TCWCD also <br />provides management services to the Project 7 Water Authority, which, in turn, provides the majority of <br />treated domestic and municipal water supplies to the residents of the Uncompahgre River Valley. <br />2.0 DISCUSSION/ANALYSIS <br />General Description of Dallas Creek Project <br />Ridgway Reservoir was constructed by the U. S. B ureau of Reclamation (USBR) as a participating <br />project in the Colorado River Storage Project (CRSP). Construction of Ridgway Dam and Reservoir was <br />completed in 1987. The total capacity of the reservoir is 84,410 acre-feet, 25,000 acre-feet of which are <br />inactive (including dead storage). Tables 1, 2, and 3 provide information regarding the physical features <br />and water rights of Ridgway Reservoir. <br />TABLE 1 <br />RIDGWAY RESERVOIR PHYSICAL FEATURES <br />FEATUREWATER RIGHT <br />Outlet Works Capacity500 cf s <br />Active Capacity 59,396 ac-f t <br />Dead and Inactive Capacity 25,014 ac-f t <br />Total Capacity 84,410 ac-f t <br />1 <br />A275 01.09.95 1.15-20 Fosha, Hyre <br />