Bull Run (Occoquan River tributary)

Bull Run Tributary to Occoquan River
Location of Bull Run mouth Show map of Virginia Bull Run (Occoquan River tributary) (the United States) Show map of the United States
Location
Country	United States
State	Virginia
County	Fairfax Prince William Loudoun
Physical characteristics
Source	Hungry Run divide[2]
• location	Cold Spring Gap[2]
• coordinates	38°56′21″N 077°39′11″W / 38.93917°N 77.65306°W / 38.93917; -77.65306[1]
• elevation	660 ft (200 m)[2]
Mouth	Occoquan River
• location	about 1 mile northeast of Ravenwood, Virginia
• coordinates	38°43′21″N 077°22′51″W / 38.72250°N 77.38083°W / 38.72250; -77.38083[1]
• elevation	120 ft (37 m)[1]
Length	31.80 mi (51.18 km)[3]
Basin size	193.89 square miles (502.2 km2)[4]
Discharge
• location	Occoquan River
• average	229.13 cu ft/s (6.488 m3/s) at mouth with Occoquan River[4]
Basin features
Progression	southeast[3]
River system	Potomac River
Tributaries
• left	Foley Branch, Cub Run, Little Rocky Run, Johnny Moore Creek, Popes Head Creek, Old Mill Branch
• right	Black Branch, Chestnut Lick, Bull Run tributary, Little Bull Run, Youngs Branch, Holkums Branch, Flat Branch, Russia Branch, Buckhall Branch
Bridges	Loudoun Drive, New Road, US 15, Peach Orchard Lane, Auburn Farm Road, Gum Spring Road, US 29, I-66, Old Centerville Road, VA 28, VA 612

Bull Run is a 31.8-mile-long (51.2 km)^[5] tributary of the Occoquan River that originates from a spring in the Bull Run Mountains in Loudoun County, Virginia, and flows south to the Occoquan River. Bull Run serves as the boundary between Loudoun County and Prince William County, and between Fairfax County and Prince William County.

Bull Run is primarily associated with two battles of the American Civil War: the First Battle of Bull Run (July 21, 1861) and the Second Battle of Bull Run (August 28–30, 1862), both Confederate victories. A narrow part of the creek called Yates Ford (near Manassas) is the scene of the Battle of Occoquan, and downstream about one mile is the current Yates Ford Road bridge between Fairfax and Prince William counties.

• List of rivers of Virginia

• Occoquan Watershed Monitoring Laboratory (Virginia)
• Northern Virginia Regional Commission, Occoquan Basin Nonpoint Pollution Management Program (Virginia)
• Prince William Conservation Alliance
• The Potomac Appalachian Trail Club -- Bull Run/Occoquan Trail (Virginia)^{[permanent dead link]}