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The upper and lower reservoirs are created by earth and rock-filled embankment dams.The upper reservoir dam is 460 feet (140 m) high, 2,200 feet (670 m) long and has a structural volume of 18,000,000 cubic yards (14,000,000 m 3).
The John H. Kerr Reservoir (often called Kerr Lake in North Carolina and Bugg's Island Lake in Virginia) [1] is a reservoir along the border of the U.S. states of North Carolina and Virginia. The U.S. Army Corps of Engineers constructed the John H. Kerr Dam across the Roanoke River between 1947 and 1952 to produce hydroelectricity as well as ...
Tainter gate from the back, or spillway, on the John H. Kerr Dam, Boydton, Virginia (USACE) Construction of the John H. Kerr dam was authorized by the 78th United States Congress in 1944 with the Flood Control Act of 1944 but did not commence until 1947. The site was selected because of the granite in the area that could support a large ...
The dam is 250 feet (76 m) high and 916 feet (279 m) long. The earth-filled dam is constructed of rock with a central clay core, which prevents water from passing through the dam. A 1,145-acre (463 ha) lake is formed behind the dam with almost 40 miles (64 km) of shoreline. South of the dam is the emergency spillway.
The dam produces hydro-electric power mostly during hours of peak demand on the American Electric Power system. Water passes from Smith Mountain Lake through generators to Leesville Lake, producing power. In times of low demand, the generators are used as pumps to reverse the flow and return the water to Smith Mountain Lake.
Smith Mountain Dam is a concrete arch dam located on the Roanoke River in Virginia, creating Smith Mountain Lake. The dam was built by Appalachian Power (a division of American Electric Power ) between 1960 and 1963 for the purposes of pumped-storage hydroelectricity .
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On February 23, 2004, the 770 ft (230 m) long, 1910 hydroelectric Embrey Dam was demolished, using 600 lb (270 kg) of explosives, by divers from an engineering detachment at Fort Eustis. [2] The aim of removal was to re-open miles of spawning grounds to aid populations of American Shad , herring, catadromous American eel, and other species. [ 3 ]