Little Seneca Lake

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Little Seneca Lake
Little Seneca Lake 2008.jpg
March 2008
Location Boyds, Maryland
Coordinates 39°11′17″N 77°18′24″W / 39.18799°N 77.306671°W / 39.18799; -77.306671Coordinates: 39°11′17″N 77°18′24″W / 39.18799°N 77.306671°W / 39.18799; -77.306671
Type Reservoir
Primary inflows Little Seneca Creek
Primary outflows Little Seneca Creek
Catchment area 21 square miles (54 km2)
Basin countries United States
Surface area 505 acres (204 ha)
Average depth 24.7 ft (7.5 m)
Max. depth 68 ft (21 m)
Water volume 4.5 billion US gallons (17,000,000 m3)

Little Seneca Lake is a reservoir located near the Boyds community in Montgomery County, Maryland. The lake was created by the construction of a dam on Little Seneca Creek. It was built to provide an emergency water supply for the metropolitan Washington, D.C. area, and it also provides a recreational amenity for the public. The lake is located in Black Hill Regional Park. Fishing and boating facilities are available at the park.

Oblique air photo of Little Seneca Lake, facing west on 1 August 2011.

The lake was completed in 1984 and the water supply dam is operated by the Washington Suburban Sanitary Commission (WSSC).[1] WSSC shares the drinking water resource with two adjacent public water suppliers, the Washington Aqueduct and the Fairfax County Water Authority.[2][3]

The surface area of the lake is 505 acres (2.04 km2). The average depth is 24.7 feet (7.5 m) with a maximum depth of 68 feet (21 m).[4] The capacity of the lake is 4.5 billion gallons (17 million m3).[1] The lake is stocked for recreational fishing. Fish species found in the lake include largemouth bass, tiger muskie, channel catfish, sunfish, and crappie.[5]

See also[edit]


  1. ^ a b Montgomery County Department of Environmental Protection (MCDEP), Rockville, MD (2003)."Chapter 3: Water Supply Systems." Ten-Year Comprehensive Water Supply and Sewerage Systems Plan, 2003-2012. pp. 3-6, 3-11.
  2. ^ Washington Suburban Sanitary Commission. Laurel, MD (2014). "Adopted CIP: Capital Improvements Program; Fiscal Years 2015 - 2020." p. 12.
  3. ^ Interstate Commission on the Potomac River Basin. Rockville, MD (2005). ”Water Supply Reliability Forecast for the Washington Metropolitan Area:Year 2025.” Report No. 05-06. p. 2-2.
  4. ^ Maryland Department of the Environment, Baltimore, MD (2006-09-01). "Water Quality Analysis of Eutrophication for Little Seneca Lake, Montgomery County, MD." p.3.
  5. ^ Montgomery County Department of Parks, Silver Spring, MD (2011-03-29). "Black Hill Regional Park."

External links[edit]