|Location||Howard / Montgomery counties, near Brookeville, Maryland|
|Primary inflows||Patuxent River|
|Primary outflows||Patuxent River|
|Catchment area||77.3 sq mi (200 km2)|
|Basin countries||United States|
|Surface area||800 acres (3.2 km2)|
|Average depth||52 ft (16 m)|
|Water volume||6,200,000,000 US gal (0.023 km3)|
Triadelphia Reservoir, sometimes called Tridelphia Reservoir or Tridelphia Lake, is located on the Patuxent River, in Howard County and Montgomery County, Maryland near the town of Brookeville. The reservoir was created in 1943 by the construction of the Brighton Dam on the Patuxent. It has a surface area of 800 acres (3.2 km2). The reservoir is maintained as a drinking water source by the Washington Suburban Sanitary Commission (WSSC).
WSSC provides recreational facilities to the public on portions of the Triadelphia property, including hiking, picnicing, fishing, boating, horseback riding, and hunting.
See also 
- Washington Suburban Sanitary Commission. Laurel, MD. "The WSSC -- A Thumbnail History." June 2007.
- Maryland Department of the Environment. Baltimore, MD."Total Maximum Daily Loads of Phosphorus and Sediments for Triadelphia Reservoir (Brighton Dam) and Total Maximum Daily Loads of Phosphorus for Rocky Gorge Reservoir, Howard, Montgomery, and Prince George’s Counties, Maryland." Final. June 2008. p. 4.
- FindLakes.com. "Tridelphia Lake, northcentral Maryland." Accessed 2010-11-21.
- U.S. Geological Survey Geographic Names Information System: Tridelphia Reservoir
- Thompson, Vernon C. (Aug 3, 1978). "Triadelphia Lake: Quiet, Serene Spot To Fish For Bass. A Quiet Fishing Spot Between the Highways, Malls: Triadelphia Lake". The Washington Post. Retrieved 2008-07-19.
- Patuxent River Profile - Montgomery County Department of Environmental Protection
- Washington Suburban Sanitary Commission
|This Maryland state location article is a stub. You can help Wikipedia by expanding it.|