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<br />CHAPTER I <br /> <br />INTRODUCTION <br /> <br />Vega Dam and Reservoir <br /> <br />Vega Dam is located about 10 miles east of the town of Collbran on <br />the north side of the Grand Mesa. The dam is a zoned, rolled earth <br />and rockfill structure with a maximum height above foundation of <br />162 feet, a crest length of 2,100 feet, and a volume of 981,825 <br />cubic yards. The outlet works is near the left abutment and <br />consists of an intake structure, a 5-foot-diameter concrete <br />pressure conduit, a concrete gate chamber for a 3.5-foot-square <br />high-pressure emergency gate, an a-foot-diameter concrete horseshoe <br />conduit containing a 51-inch-diameter steel pipe, a control house <br />containing two 2. 25-foot-square high-pressure control gates, a <br />concrete stilling basin, and an outlet channel which discharges <br />into the Souths ide Canal. <br /> <br />, <br />" <br /> <br />Leon-Park Feeder Canal <br /> <br />The Leon-Park Feeder Canal conveys water from Leon and Park Creeks <br />to Vega Reservoir. The 450 cfs capacity canal begins at the Leon <br />Creek Diversion Dam on Leon Creek and extends about 2 miles to a <br />siphon under Park Creek. Water diverted from Park Creek by the <br />Park Creek Diversion Dam, about 1,000 feet above the siphon outlet, <br />then combines with the Leon Creek diversions, and flows abou~~7__ <br />mile to Vega Reservoir. <br /> <br />Southsi4e Canal <br /> <br />Souths ide Canal heads at the outlet works of Vega Reservoir and <br />conveys irrigation water westward from the reservoir to Collbran <br />Project lands. The 32.8-mile-long canal has an initial capacity of <br />240 cubic feet per second and a terminal capacity of 50 cubic feet <br />per second at Mesa Creek. Thirteen siphons carry the canal across <br /> <br />7 <br />