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<br />SYNOPSIS <br /> <br />supply, averaging aboot 69,000 acre-feet annually. Water in nearly <br />uniform annual quantities would be released from the reservoir to the <br />Bonneville Basin through two almost parallel tunnels, approximately 4 <br />and 5 miles long, and then would be conveyed down the western slope of <br />the Wasatch Mountains through Diamond Fork and Spanish Fork Canyons. <br />In its descent from the reservoir to near the floor of the Bonneville <br />Basin, a drop of aboot 2,600 feet, the water would pass through a series <br />of hydroelectric power plants with a ccrnbined capacity of 231,000 kilo- <br />watts, capable of producing 1.1 billion kilowatt-hours of energy annually. <br />The water would pass first through the Old West and Fifth Water power <br />plants located near the outlets of the two tunnels. Water released frcm <br />these plants would flow through the Sixth Water and Fifth Water aqueducts <br />to a common surge pipe. The water would then flow successively through <br />the Hammock and Tanner power plants to the Monks Hollow Reservoir. From <br />Monks Hollow Reservoir the water would enter the Wasatch aqueduct. Eight <br />miles down the aqueduct line, high on the wall of Spanish Fork Canyon, <br />the water would be divided, part continuing in the aqueduct and extensions <br />to the south and part being diverted to the north. <br /> <br />During the irrigation season the water continuing sooth in the <br />Wasatch aqueduct would be distributed for irrigation and other purposes in <br />the area from Salem to Levan. Part of the aqueduct water would be regu- <br />lated in the Gooeenest Reservoir and other reservoirs and distributed to <br />lands that are above canals of the Strawberry Valley project in an area <br />between Salem and York Ridge, a ridge south of Santaquin. At York Ridge, <br />part of the water would be diverted into the potential Mona-Nephi Canal <br />and used as far south as Levan. Some of the water would replace that now <br />supplied for irrigation from Salt Creek near Nephi, thus permitting more <br />of the spring water tributary to Salt Creek to be used for municipal, <br />industrial, and other miscellaneous purposes in the Nephi area. Return <br />flows from irrigation in the Nephi area would be utilized on agricultural <br />lands in the vicinity of Elberta. These flows woold be regulated in the <br />existing Mona Reservoir that would be enlarged under the project. During <br />the nonirrigation season water continuing south in the Wasatch aqueduct <br />beyond York Ridge would be conveyed to the 530,000 acre-foot Dyer Reser- <br />voir and stored for irrigation of lands near Holden and Fillmore. Some <br />of the water from Dyer Reservoir would be used near Delta for irrigation <br />of lands now supplied from the lower Sevier River. Thus more water of <br />the Sevier River could be stored in existing upstream reservoirs and <br />used for irrigation of lands along the upper reaches of the river, <br />principally near Richfield. <br /> <br />Water diverted to the north from the Wasatch aqueduct, including <br />the present Strawberry Valley project supply, would drop through the <br />Castilla power plant. It would then be used for supplemental irrigation <br />and other purposes in the area from Santaquin to Springville now partially <br />served by the Strawberry Valley project. During the nonirrigation season <br /> <br />4 <br />