Fort Gibson Lake
| Fort Gibson Dam | |
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Fort Gibson dam seen from above
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 Location of Fort Gibson Dam in Oklahoma
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| Country | United States |
| Location | Wagoner / Cherokee counties near Fort Gibson and Okay, Oklahoma, US |
| Coordinates | 35°52′11″N 95°13′50″W / 35.869665°N 95.230436°WCoordinates: 35°52′11″N 95°13′50″W / 35.869665°N 95.230436°W |
| Status | In Use |
| Construction began | 1941 |
| Opening date | 1949 |
| Construction cost | $22,000,000 |
| Owner(s) | U.S. Army Corps of Engineers |
| Dam and spillways | |
| Type of dam | Concrete Gravity |
| Impounds | Neosho River |
| Height | 110 ft (34 m) |
| Length | 2,850 ft (869 m) |
| Spillways | 30 |
| Spillway type | Tainter gate |
| Spillway capacity | 986,000 cu ft (27,920 m3) |
| Reservoir | |
| Creates | Fort Gibson Lake |
| Total capacity | 1,292,000 acre·ft (2 km3) |
| Active capacity | 1,287,000 acre·ft (2 km3) |
| Catchment area | 12,615 sq mi (32,673 km2) |
| Power station | |
| Commission date | 1953 |
| Turbines | 4 x 11.25 MWFrancis-type |
| Installed capacity | 48 MW |
| Annual generation | 208,482,000 KWh |
The Fort Gibson Dam is a gravity dam on the Grand (Neosho) River in Oklahoma, 5.4 mi (9 km) north of Fort Gibson. The purpose of the dam is flood control and hydroelectric power production. It was authorized by the Flood Control Act of 1941 and construction began the next year. During World War II construction was suspended and it recommenced in May 1946. In June 1949, the river was closed and the entire project was complete in September 1953 with the operation of the last of the power plant's four generators. The dam and power rights originally belonged to the Grand River Dam Authority but were seized by the U.S. Army Corps of Engineers in 1946.
First Contract: Al Johnson construction co. Winston brothers co. peter kiewit sons co. 608 Foshay Tower. Minneapolis, Minnesota
Second Contract: W. R. Grimshaw company. - Tulsa, Oklahoma
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