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<br />COLORADO RIVER STORAGE PROJECT <br />AND PARTICIPATING PROJECTS <br /> <br />A. AUTHORIZED STORAGE UNITS <br /> <br />(Information relative to Storage Units and participating projects has <br />been obtained from reports on investigations and activities of the United <br />States Department of the Interior, Bureau of Reclamation.) <br /> <br />The Colorado River Storage Project was authorized for construction <br />by the United States eongressin the Act of April 11, 1956, (70 Stat. 105). <br />Four storage units were authorized by this Act: Glen Canyon Dam and <br />Reservoir (Lake Powell) on the Colorado River in Arizona and Utah, <br />Navajo Dam and Reservoir on the San Juan River in New Mexico and <br />Colorado, Flaming Gorge Dam and Reservoir on the Green River in Utah <br />and Wyoming and the Wayne N. Aspinall Storage Unit (Aspinall Unit), <br />formerly named the eurecanti Storage Unit and rededicated in July of <br />1981, on the Gunnison River in Colorado. The Aspinall Unit consists of <br />three dams and reservoirs: Blue Mesa, Morrow Point and Crystal. <br />eombined, the four storage units provide about 33,583,000 acre-feet of <br />water storage capacity. The Act authorized the construction of eleven <br />participating projects. Ten additional participating projects have been <br />authorized by subsequent congressional legislation. <br /> <br />The storage units and participating projects are described in the <br />twenty-seventh and earlier annual reports of the Upper Colorado River <br />eommission. Progress in construction, planning, operation and investi- <br />gation of the storage units and participating projects accomplished during <br />the past water year are briefly outlined as follows: <br /> <br />1. GLEN CANYON STORAGE UNIT <br />Glen eanyon Dam and Reservoir (Lake Powell) comprises the key <br />storage unit of the Colorado River Storage Project (eRSP) and is the <br />largest of the initial four, providing about 80 percent of the storage and <br />generating capacity. Glen eanyon Dam was completed in 1964. <br /> <br />33 <br />