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basin range from 13,000 feet in the headwater areas to approximately 4,900 feet at the mouth. The average slope of the basin is approximately 2.5 percent. Drainage areas at the upstream and downstream limits of detailed study are 1,082 square miles and 1,129 square miles, respectively. Minnesota Creek, a tributary to Gunnison River, has its headwaters in the Gunnison National Forest in Gunnison County, approximately 15 miles upstream of the Town of Paonia. It flows in a northwesterly direction to its confluence with North Fork Gunnison River approximately 0.5 mile downstream of Paonia. The drainage area of Minnesota Creek at this confluence is approximately 53.1 square miles. The average slope of the steep mountainous terrain which comprises the basin is approximately 150 feet per mile (2.8 percent), and the average streambed slope is approximately SO feet per mile (1.9 percent). Surface Creek has its headwaters in Grand Mesa National Forest, approximately 18 miles northeast of the City of Orchard City. Surface Creek flows from its origin near Leon Peak in a southwesterly direction to its confluence with Tongue Creek near the western corporate limits of Orchard City. Drainage areas at the upstream and downstream limits of detailed study are approximately 44.7 and 38.6 square miles, respectively. The drainage basin of Surface Creek drops from an elevation of 11,100 feet at its headwaters to 5,500 feet at its confluence wi th Tongue Creek. The average basin slope through the study area is approximately 120 feet per mile (2.3 percent). Cedar Run has a drainage area of approximately 4. 7 square miles at its mouth. The basin begins at an elevation of 7,160 feet, approximately 2.3 miles northeast of the Town of Cedaredge. It flows southwesterly through Cedaredge and the City of Orchard City to its confluence with Gunnison River at an average slope of approximately 4.3 percent. The topography of Delta County consists sloping valleys and mesas which are drainageways with steeply sloping sides. mainly of moderately highly dissected by The soils in the Delta County study area and the headwater regions of the study streams are classified as (Reference 3): Soil Group Runoff Potential Desert-Sierozem Under Low Brown-Chestnut Low Mountain Prairie-Chestnut Over Low Gray Wooded-Brown Podzolic- Mountain Prairie Under High 5