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The lower reservoir dam on Back Creek is 135 feet (41 m) high and 2,400 feet (730 m) in length. It has a structural volume of 4,000,000 cubic yards (3,100,000 m 3 ) and creates a reservoir with a surface area of 555 acres (225 ha) and storage capacity of 27,927 acre-feet (34,447,000 m 3 ).
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 ...
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It is formed by the Occoquan Dam on the Occoquan River. Managed by the Fairfax County Water Authority, it provides an important water supply to surrounding settlements in northern Virginia, with an output of 17 million US gallons a day (64,000 m 3 /d) to 1.2 million people, including over half of the population of Prince William County. [1]
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.
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 .
The rock fill dam was completed in 1963 at a cost of $6.2 million. The dam is 122 feet (37 m) high and 600 feet (180 m) long. Water releases from the dam are controlled by three gates (3 feet wide, 6 feet (1.8 m) high) located in the intake structure. Lake elevation is maintained at 1,611 feet (491 m) above sea level.
The dam impounding the Accotink Creek was built on the site of a previous dam which had existed for that same purpose from 1918 to 1922. [ 2 ] The discharge of sewage treatment plants in Fairfax and Vienna into the Accotink Creek eventually led to the contamination of the water to the point where it was no longer fit for drinking, and the Army ...