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CWCB Construction Fund Grant Application Grand Valley Water Management Project 2 S. Please provide a brief description of the owner's existing water supply facilities and describe any existing operational or maintenance problems. (Attach separate sheets and a map, if needed.): The Grand Valley Water Users Association operate and maintain the Federal Grand Valley Project. Project facilities include a mainstem Colorado River Diversion Dam capable of diverting 1,620 cubic feet per second, a powerplant, two pumping plants, two canal systems totaling 90 miles, 166 miles of laterals, and 113 miles of drains. Located in the Grand Valley, the Federally owned Grand Valley Project serves two active divi- sions: the Garfield Gravity Division, operated and maintained by the GVWUA under contract with the United States; and the Orchard Mesa Division, operated by the Orchard Mesa Irrigation District. Water is diverted from the Colorado River into the Government Highline Canal at the Grand Valley Diversion Dam, about 8 miles (mi.) (12.9 kilometers (km)) upstream from Palisade, Colorado. Although not part of the Grand Valley Project, water for Mesa County and Palisade Irrigation Districts is also diverted at the dam. The Garfield Gravity Division includes the Grand Valley Diversion Dam and the Government Highline Canal and lateral system. The Orchard Mesa Division includes the Colorado River siphon, the Orchard Mesa Power Canal, the Grand Valley Power Plant, the Orchard Mesa Pumping Plant and the Orchard Mesa Canal system. The Orchard Mesa Division: The Orchard Mesa Irrigation District (OMID) operates and maintains the irrigation facilities in the Orchard Mesa Division delivering water to approximately 4,800 water users. The irrigated acreage of the OMID is approximately 6,900 acres (ac). The Orchard Mesa Division is located on the south side ofthe Colorado River. Water for the Orchard Mesa Division is diverted through the Grand Valley Diversion Dam and is conveyed through the Government Highline Canal to the bifurcation at the inlets of Tunnel No.3 and the Colorado River siphon. At the bifurcation, the water destined for the Orchard Mesa Division goes through the Colorado River siphon to the OMID Power Canal. About 17 cubic feet per second (ft3/s) is delivered directly from the canal to irrigated lands. At the end of the power canal, the water is delivered to the OMID Pumping Plant and the Grand Valley Power Plant. The pumping plant consists of four hydraulically driven pumps which pump water into two different canals. The canals, totaling about 34 mi., deliver water to 37 mi. of privately owned and operated laterals. The four hydraulically driven pumps use about 272 ft3/S to lift 171 ft3/S up to irrigated lands. The 272 ft3/S used to power the pumps normally returns through the pumping plant/power plant tailrace to the upstream end ofthe IS-Mile Reach. The IS-Mile Reach extends from the Grand Valley Irrigation Company diversion dam down to the confluence with the Gunnison River and is believed provide important habitat for the recovery of endangered Colorado River fish species.