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Sugarland Run and Horsepen Creek Watersheds

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Sugarland Run and Horsepen Creek watershed map Description
The Sugarland Run and Horsepen Creek watersheds are located in the northwestern part of Fairfax County, and cross into Loudoun County. Sugarland Run drains to the Potomac River and Horsepen Creek drains into South Fork Broad Run, which then drains into the Potomac River.

Major Streams and Tributaries
Sugarland Run: Major tributaries include Folly Lick Branch, Offuts Branch and Rosiers Branch, as well as some unnamed streams.

Horsepen Creek: Major tributaries include Cedar Run and Frying Pan Branch as well as some unnamed streams.

Watershed Size
46.0 square miles, total
19.3 square miles within Fairfax County

  • Sugarland Run: 22.5 square miles; 10.5 within Fairfax County
  • Horsepen Creek: 23.5 square miles; 8.8 within Fairfax County

Unique Features
The town of Herndon is on the border between the two watersheds. Part of the Dulles Airport property is in the Horsepen Creek watershed and Frying Pan Park is also in this watershed.