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SUMMARY General The Diamond Fork Power System, located in north-central Utah, would be an essential component of the interrelated systems of the Central Utah Project I s Bonneville Unit. Construction of the Bonne- ville Unit began in 1967 and is about 20 percent complete. The Central Utah Project is a major water development project designed to provide water for agricultural and municipal and industrial needs for 12 counties in northern and central Utah and for hydroelectric power generation. The Diamond Fork Power System would develop hydroelectric energy by means of a transbasin diversion of water which would descend about 2,600 feet from the enlarged Strawberry Reservoir in the Uinta Basin, a part of the Colorado River Basin, to the confluence of Diamond Fork and the Spanish Fork River in the Bonneville Basin through a system of tunnels, pipe- lines, reservoirs, and powerplants. Additionally, the system would provide recreation, fish and wildl ife measures, and flood and water quality control. The developed water and energy would fulfill the project objectives of supplying immediate and projected needs for the rapidly growing populat ion along the Wasatch Front. Some of the energy would be used for project pumping and the rest would be marketed for commercial use throughout the Colorado River Storage Project market- ing area. Most of the power system would be located in Utah County; however, a small portion at the upper end of the system would be located in Wasatch County. The system would be constructed in the Diamond Fork and Fifth Water drainages in the Uinta National Forest of the Wasatch Mountain range. Fifth Water is a tributary of Diamond Fork, which is a tributary of the Spanish Fork River. Elevations of project features would range from about 7,600 feet to 5,000 feet. A number of non-Federal entities have expressed interest in partici- pating in development of the Diamond Fork Power System. Under the concept of non-Federal participation, which Reclamation has been directed to explore, such ent it ies could fund part of the cons truc t ion of the powerplants and associated features in return for a comparable portion of the energy produced. Specific guidelines for implementing this partici- pation have yet to be developed, with the exception that the generating units would be an integral part of water resource development projects and, therefore, would be operated to satisfy the multiple purposes of the project. Alternatives During project investigations, five alternatives were developed from several representative alternatives. In four of these alternatives, conventional hydroelectric power would be generated and 197,600 acre-feet of existing Strawberry Valley Project and Bonneville Unit water would be delivered through a system of tunnels, pipelines, dams and reser- voirs, and powerplants. The fifth alternative would not include S-l