Public Works and Environmental Services

Fairfax County, Virginia

CONTACT INFORMATION: Our office is open 8 a.m. – 4:30 p.m., Monday - Friday

TTY 711

12000 Government Center Parkway
Suite 449, Fairfax, Va 22035

Shannon Curtis,
Chief, Watershed Assessment Branch

Cub Run and Bull Run Watersheds

map of watershed areaLocation
The Cub Run and Bull Run watersheds (55.3 square miles and 9.7 square miles, respectively) are located in the southwestern part of Fairfax County bordering Loudoun and Prince William counties, upstream from Little Rocky Run.

Major Streams and Tributaries
Cub Run: Major tributaries include Big Rocky Run, Cain Branch, Dead Run, Elklick Run, Flatlick Branch and Round Lick Branch.
Bull Run: The major tributaries are Bull Run East and Bull Run West.

Unique Features
14 square miles of Loudoun County drains to these watersheds. While the impacts of these areas will be evaluated, the watershed plan does not extend into Loudoun County. These watersheds drain into the Occoquan Reservoir, which supplies drinking water for areas of Fairfax County and other local jurisdictions.

Full Plan (23 MB)



Several projects have been completed or are under development from the watershed plan. Please see the project list website for a list of these projects per watershed.

For additional information, please email the Stormwater Planning Division or call 703-324-5500, TTY 711.