Bull Run (Occoquan River tributary)

Bull Run is a tributary of the Occoquan River that originates from a spring in the Bull [Run Mountains] in Loudoun [County, Virginia|Loudoun County], Virginia, and flows south to the Occoquan River. Bull Run serves as the boundary between Loudoun County and Prince [William County, Virginia|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] and the Second Battle of Bull Run, both Confederate victories. A narrow part of the creek called Yates Ford is the scene of the Battle of Occoquan, and downstream about one mile is the current Virginia State Route 612 (Fairfax and [Prince William Counties)|Yates Ford Road] bridge between Fairfax and Prince William counties.