Overview
Vallecito Dam is on the Pine River, 18 miles northeast of Durango. The dam is a zoned earthfill structure 162 feet high and 4,010 feet long. The maximum width of the base from upstream toe to downstream toe is 900 feet, and the crest is 35 feet wide. The total volume of material in the dam embankment is 3,738,000 cu/yd
The maximum flow through the outlet works is 3,000 cubic feet per second (cfs). The spillway is a 2,300 foot long, curved, concrete lined open channel that varies in width from 50 to 125 feet. Flows through the spillway are controlled by three radial gates. The total capacity of the spillway is 33,000 cfs. The spillway is located on the crest of the right abutment.
General
| Project | Pine River |
| Dam Type | Zoned earthfill |
| Location | 18 miles northeast of Durango, CO |
| Longitude | -107.57537841796875 |
| Latitude | 37.37775337577529 |
| Watercourse | Pine River (Los Pinos) |
| Reservoir | Vallecito |
| Original Construction | 1938-1941 |
| National ID Number | CO01695 |
Dimensions
| Crest Elevation | 7673.0 ft |
| Structural Height | 162.00 ft |
| Hydraulic Height (Normal Operating Depth at Dam) | 121.5 ft |
| Crest Length | 4010.00 ft |
| Top of Joint Use Pool (Elevation) | 7665.00 ft |
| Volume of Dam Construction Materials | 3,738,000 cu yds |
| Top of Dead Storage Pool (Elevation) | 7582.54 ft |
| Streambed at Dam Axis | 7547.00 ft |
| Spillway Crest Elevation | 7646.00 ft |
Hydraulics & Hydrology
| Auxiliary Spillway | No |
| Outlet Works Capacity at Elevation | 3100.00 cfs at 7665.00 ft |
| Drainage Area | 270.00 sq mi |
| Hydrometeorological Report (HMR) | HMR 49 |
| Maximum Water Surface Elevation | 7668.5 ft |
| Spillway Capacity at Elevation | 30000.00 cfs at 7665.00 ft |
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