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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 river is 24.7 miles (39.8 km) long, [6] and its watershed covers about 590 square miles (1,528 km 2).It is formed by the confluence of Broad Run and Cedar Run in Prince William County; Bull Run, which forms Prince William County's boundary with Loudoun and the northerly part of Fairfax counties, enters it east-southeast of Manassas, as the Occoquan turns to the southeast.
The dam is overseen by the ARWA. [2] Based on the last yield study, [5] the total storage volume of Lake Chesdin was 9.66 billion gallons (BG), with a safe yield of approximately 41.3 million gallons per day (mgd). [2] To provide a municipal water supply, the city of Petersburg purchases water from ARWA. [6]
Burke Lake is formed by a dam on South Run, a tributary stream of the Potomac River. Fairfax County permits visitors to use the lake for fishing, electric-motor, and paddle/row boating. The lake has 4.5 miles (7.2 km) of fishing shoreline, three fishing bulkheads at the state game area, a fishing pier, a public & marina & public launch ramps ...
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]
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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 ...