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Show the County maintains land-use control over private land. Water quality is the poorest of all the Wasatch Canyons. Parleys Canyon is the largest drainage of the Wasatch Canyons and serves as a major Salt Lake City water supply. Interstate 80 passes through Parleys Canyon and limited residential development occurs in the Mount Aire and Lambs Canyon side drainages. Recreational use occurs through developed and undeveloped picnic groundG, a golf course, snowmobiling, cross-country skiing, hunting and fishing. Water quality is excellent. Salt Lake City owns almost all of the available water rights in Parleys Canyon. Subdivisions without water rights or buildings are located in the upper reaches of the Canyon. Little Dell Reservoir and facilities to expand water treatment capacity will be constructed in the next few years. Mill Creek Canyon is a large, high drainage with water flows comparable to City Creek Canyon. Mill Creek has the second poorest water quality of the Wasatch Canyons. It is heavily used for a wide range of rec~eational activities, including picnicking, camping, hiking, second homes, cross-country skiing, hunting, fishing, and car to~ring. Limited commercial and residential use occurs in the Canyon. Salt Lake City has ri~hts to most of the water, and the U.S. Forest Service manages most of the land. Big Cottonwood Canyon has the largest stream flows of any creek in the Wasatch Canyons. It is high in elevation and has a U-shaped, glaciated upper canyon. Water quality is very good, but has deteriorated slightly over the past ten years. Major recreational activities are pursued in the Canyon, including downhill and cross-country skiing, camping, picnicking, hiking, fishing, hunting, snowmobiling, snow playing, and second home development. Substantial private landholdings offer the potential for increased residential and commercial development in the coming years. Salt Lake City owns virtually all of the available water rights in Big Cottonwood Creek, and the U.S. Forest Service manages most of the land. Proposals for ski area expansion, \' I \ 5 |