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between items that have been collected for the project library and those that were reviewed but not actually obtained for the project library. C'..) :: ) WATER SUPPLY AND USER ENTITI ES (~") Q:) (,Q N For the purpose of this memorandum, water suppliers and users area were categorized by their primary purpose as either hydroelectric, agricultural or municipal and industrial (M&I). in the study regulatory, The term "regulatory" was coined to describe the Wayne N. Aspinall Unit (Aspinall Unit) of the Colorado River Storage Project which was constructed by the Federal government primarily to regulate Gunnison River flows. The Aspinall Unit is comprised of three storage reservoirs located on the main stem of the Gunnison River; Blue Mesa, Morrow Point and Crystal. Flows of the Gunnison River are largely controlled by Blue Mesa Reservoir, the largest and uppermost of the three. Each of the three reservoirs includes a hydroelectric generating facility. The total installed capacity of the three plants is 208,000 kW. The primary function of the Aspinall Unit, however, is to regulate streamflow so that water commitments to the Lower Colorado River Basin can be met in dry periods without curtailment of the development of water allotted to the Upper Basin. The only commercial hydroelectric power generating station in the study area other than the Aspinall Unit facilities is the Ouray facility. The Ouray hydropower plant is a 700 kW run-of-river facility owned and operated by the Colorado Ute Electric Association. It is located on the Uncompahgre River within the town of Ouray. Agriculture has historically been the largest user of water within the study area. Irrigated agriculture has been practiced in the area since the late 1800's. Three U.S. Bureau of Reclamation (USBR) projects which provide irrigation water from storage serve agricultural lands within the area. These projects are the Uncompahgre Project (Taylor Reservoir), Bostwick Park Project (Silver Jack Reservoir) and the Dallas Creek Project (Ridgway Reservoir). These projects are owned by the USBR but are operated and maintained by the Uncompahgre Valley Water Users Association (UVWVA), the Bostwick Park Water Conservancy District (BPWCD) and the Tri-County Water Conservancy District (Tri-County), respectively. Each of those organizations is also responsible for repayment of the projects. Project Lands irrigated by these three projects are: -2-