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Project Name Table 34. - Projects that appear to have P. L. 566 project possibilities, Uncompahgre Subbasin, Gunnison River Basin * Horsefly Creek Dolores Creek Happy Canyon Spring Creek c.-x) -oJ Shavano Valley Dry Creek Location Creek enters Uncompahgre River approx. 12 miles south of Montrose Approx. 10 miles S.W. of Montrose First drainage north of Dolores Creek Adjacent to south end of Shavano Valley West of Montrose Enters river west of Delta Size Acres 25,900 14,400 18 ,900 30,600 32,000 82,900 Land Status 19.500 private 6,400 B.L.M. 9,600 private 4,800 B.L.M. 7,900 private 7,000 B.L.M. 4,000 F.B. 13,000 F.B. 12,000 private 5,600 B.L.M. 24,000 D.L.M. 8,000 private 56,900 ac. priv. 15,000 B.L.M. 11,000 F.B. Land Use 24,500 ac. range 1,100 ac. irrig. crop 12,400 ac. range 2,200 ac. irrig. crop 17,000 ae. range 1,300 ae. irrig. crop 600 ae. dry crop 25,400 ae. range 5,000 ae. irrig. crop 200 ae. dry crop 27,000 ae. range 5,000 ae. irrig. crop 77,700 ae. range 5,200 ae. irrig. crop Watershed Problems Water and sediment from adjacent range lands deposited on crops lands. Erosion damage on water~ shed lands. Sediment from range lands deposited on croplands. Deep channel through crop- lands. Occasional sediment damage from adjacent range land areas on lower lying irrig. croplands. Channel capacity limited, creek overflows banks. Channel obstructed by weeds and trees. Some damage to road and struc- tures. Sediment damage on crop land. 5 or 6 small washes converge and deposit floodwater and sediment into irrigation canal and onto irrigated cropland. County road and canal also receive damage. Bank cu t ting; channe 1 capacity reduced with vegetative growth; over bank water and sediment damage. Needed Works of Improvement Proper range use. range reseeding, floodwater retarding structures above cropland, agricultural water management on cropland. Floodwater retarding structure above crop- land. Drainage and acricu1tural manage- ment. Range reseeding. Floodwater retarding structures and water- shed land treatment. Floodwater retarding structures; channel clearing and addi- tional capacity; watershed land treatment. Floodwater retarding structure above canal. Watershed land treat- ment and agricultural managemen t. No good suitable sites for retarding structures. 1488 Remarks Channel capacity restricted through croplands. Average annual runoff 2,565 acre-feet from 40 sq. mile drainage area. Average annual run- off 880 acre-feet from 20 sq. miles drainage area. Average annual run- off 1,165 acre-feet from 25 sq. miles drainage area. Maximum recorded runoff 1921--18,000 acre-feet. Average annual runoff--7,400 acre-feet from 45 sq. miles drainage area. Damage by floods in this area initiated action to form Shavano Soil Conser- vation District. 14,000 acre-feet annual average run- off from 101 sq. mi. drainage area. * Determined by reconnaissance surveys, review of existing data and field interviews.