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C&O Canal - Four Locks
AuthoritativeLocation
Off Route 56 on Four Locks Road, Big Spring, MD 21722
GPS Coordinates
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About This Ramp
Hours
Sunrise to Sunset
Managed by
National Park Service C&O Canal National Historical Park
Ramps
2
Surface
Concrete
Amenities
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. GPS coordinates: 39.6148°N, 77.9468°W.