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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 dam serves flood control and recreational purposes and is operated by the U.S. Army Corps of Engineers. [2] The Gathright Dam's intake tower contains nine portals that allow it to release water between reservoir depths of 12 to 87 feet (3.7 to 26.5 m). This allows the dam to manage the temperature and flow of water released downstream. [3]
The Occoquan Boat Club (OBC), founded in 1979 by Rick Evans, is a major boating club located on the reservoir, organizing rowing, sponsoring crew races, sending teams to regattas, and advocating rowing in Northern Virginia. The OBC has 180 members and has over 19 shells, recognizable by their red and black striping on the bow. [4]
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 .
Smaller and lower than Smith Mountain Lake, Leesville Lake covers 3,270 acres (13.2 km 2) and contains 94,900 acre-feet (117,100,000 m 3) of water at full pond. The lake is 17 miles (27 km) long with around 110 miles (180 km) of shoreline.
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. [ 1 ] 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 ...
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The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3).