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Summersville Lake

Huntington District
Published Jan. 10, 2024

Summersville Dam was authorized by Section 4 of Flood Control Act of 1938. The primary project purposes are flood risk management, fish and wildlife enhancement, water quality, recreation, and low flow augmentation. The dam was completed in 1966 and serves a drainage area of 803 square miles. The lake is impounded by a rock-fill dam with a central impervious core, 390 ft. tall and 1,780 ft. wide, with an uncontrolled saddle spillway. Outlet works are located in the right abutment of the dam through a circular tunnel which splits into three conduits. Flow is controlled by fixed cone diversion valves. Low flow is controlled through a 3 ft. conduit with a fixed cone dispersion valve.  Conduits and the tunnel can be closed and dewatered with butterfly valves and two sloped sliding gates. Other structures include two dikes on the west rim of the reservoir. Hydroelectric plant operated on the project. There are nine recreation areas including a campground with 117 sites and a marina with 473 slips.


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