Foss Reservoir
| Foss Reservoir | |
|---|---|
Foss Lake Beach | |
| Location | Custer County, Oklahoma |
| Coordinates | 35°34′05″N 99°13′19″W / 35.568°N 99.222°W |
| Type | Reservoir |
| Primary inflows | Washita River |
| Primary outflows | Washita River |
| Catchment area | 1,496 square miles (3,870 km2) |
| Basin countries | United States |
| Managing agency | U.S. Bureau of Reclamation |
| Built | October 1958 |
| First flooded | October 1962 |
| Max. length | 10.91 mi (17.56 km) |
| Max. width | 2 mi (3.2 km) |
| Surface area | 8,800 acres (3,600 ha) |
| Average depth | 23 feet (7.0 m) |
| Max. depth | 89 feet (27 m) |
| Water volume | 256,220 acre⋅ft (316,040,000 m3)(flood capacity) |
| Shore length1 | 63 mi (101 km) |
| Surface elevation | 1,652 ft (504 m) |
| Islands | several islets |
| Settlements | Foss, Oklahoma; Clinton, Oklahoma |
| 1 Shore length is not a well-defined measure. | |
Foss Reservoir, also known as Foss Lake, is in Custer County, Oklahoma on the Washita River, about 15 miles (24 km) west of Clinton, Oklahoma. The reservoir was constructed during 1958–1961 by the U. S. Bureau of Reclamation. The project was known originally as the Washita Basin Project. The lake and dam were named for the community of Foss, Oklahoma, about 6 miles (9.7 km) south of the site. Their primary purpose is to regulate flow of the river and to provide water for the cities of Bessie, Clinton, Cordell and Hobart. It is western Oklahoma's largest lake and lies entirely within Foss State Park.