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is approximately 14 miles. The creekbed slopes at approximately 1.4 percent at Frisco, 2.0 percent in the canyon, and 2.7 percent in the upper basin. Elevations in the basin range from 9,017 feet at Lake Dillon to 13,000 feet above Copper Mountain. The study area is at Wheeler Junction near the Copper Mountain ski area. Development in this area consists of a gas station and the Copper Mountain waste- water-treatment facility. . West Tenmile Creek forms the westernmost portion of the Blue River basin. It flows easterly from the Shrine Pass/Vail Pass area to Wheeler Junction where it joins Tenmile Creek. It is separated from Tenmile Creek by Copper Mountain to the south. The basin has a total drainage area of 21 square miles, and its width varies from 5 miles at Vail Pass to 2 miles at Copper Mountain Resort. The channel slope varies from 3.7 percent around Vail Pass to 1.5 per- cent at Copper Mountain. The elevations in the basin range from 9,600 feet at Wheeler Junction to 13,000 feet at the West Tenmile Mountain Range. The study area is at the base of Copper Mountain and is being developed as a resort area. jt / \,.- Meadow Creek flows easterly from the Gore Range into Dillon Reser- voir at Frisco, just north of lower Tenmile Creek. It has a total drainage area of 5.8 square miles and a length of 4.5 miles. The width of the basin varies from 1.0 to 1.5 miles. The channel slope averages 1.7 percent above Frisco in the Gore Range. The elevations in the basin "range from 9,017 feet at Dillon Reservoir to 12,700 feet. Development along the creek is limited to the upper 0.2 mile near State Highway 9, where there are condominiums and expanding commercial development. . The Straight Creek basin lies just north of the Snake River basin and drains southwesterly from an elevation of approximately 12,500 feet above the Eisenhower Tunnel. It empties into Blue River just below Lake Dillon near Silverthorne at 8n elevation of 8800 feet. The basin has a uniform width of approximately 3 miles. It is 8 miles long and has a drainage area of 20 square miles at the mouth. The channel slope ranges from 3.4 percent in the study area to a steep slope of 7.1 percent in the upper basin. Development in the upper one-half of the basin is relatively dense with many condominium units and single-family homes, whereas, the lower one-half is sparsely developed. .J Soda Creek basin drains northerly into Dillon Reservoir at the mouth of the Snake River. Drainage is from the timbered, rolling hills just east of the reservoir. The total drainage area is approximately 10 square miles. The basin is 5 miles long, and basin width aver- ages 2 miles. The channel slope varies from 1.5 percent at its mouth to 9.0 percent in the upper basin. The elevations in the basin range from 9,017 feet at its mouth to 11,000 feet. Beginning at Swan Mountain Road, 1.6 miles of the creek were studied. Develop- ment is" concentrated near the upper study limit. 7