Acquiring satellite view…
C&O Canal - Four Locks
AuthoritativeLocation
Off Route 56 on Four Locks Road, Big Spring, MD 21722
GPS Coordinates
Get Directions
About This Ramp
Free to Use
Hours
Sunrise to Sunset
Managed by
National Park Service C&O Canal National Historical Park
Ramps
2
Surface
Concrete
Amenities
RestroomADA Restroom
MD DNR1 data sourceUpdated Mar 2026
C&O Canal - Four Locks is a public boat ramp on Potomac River in Big Spring, Washington County, Maryland (21722). Managed by National Park Service C&O Canal National Historical Park. This ramp is free to use. GPS coordinates: 39.6148°N, 77.9468°W.