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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 ).
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 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.
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 ]
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 ...
Lake Chesdin Reservoir was created in 1968 by construction of the George F. Brasfield Dam on the Appomattox River. [2] Lake Chesdin was built to supply water to Dinwiddie, Prince George and Chesterfield counties, along with the cities of Colonial Heights and Petersburg. [3]
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The Bedford Hydropower Project (Snowden) is a hydroelectric generation facility on the James River near the community of Big Island, Virginia.The project includes a low head structure completely spanning the river; river flow is split into a concrete canal leading to the hydroelectric generation facility and the natural river course.