Potomac River Guide
Interactive Maps
Mount Vernon to Anacostia River
Search Potomac Sites
Also Explore
The Hudson River Guide | The Delaware River Guide |
NEW! The Connecticut River Guide |
Four Locks Area Map
This Site

C&O Canal National Historical Park
142 W. Potomac St.
Williamsport, MD 21795
Nearby Sites
![]() | Schoolhouse at Four Locks Historic Site -- 0.09 miles |
![]() | Lockhouse 49 Historic Site -- 0.28 miles |
![]() | Four Locks Boat Ramp River Access Point -- 0.30 miles |
![]() | North Mountain Hiker Biker Campsite Canal Campsite -- 0.66 miles |
![]() | McCoys Ferry Boat Ramp River Access Point -- 0.97 miles |
![]() | McCoys Ferry Campground Campground -- 0.99 miles |
![]() | Dam No. 5 Canal Site -- 0.99 miles |
![]() | Prathers Neck Wildlife Management Area Maryland Recreation Site -- 1.38 miles |
![]() | Fort Frederick State Park Maryland State Park -- 1.77 miles |
![]() | Back Creek, VA Tributary -- 1.84 miles |