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Riley’s Lock

National Park Service Historic Site

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Riley's Lock (Lock 24) and lock house are part of the 184.5-mile Chesapeake and Ohio Canal. They are located at towpath mile-marker 22.7 adjacent to Seneca Creek, in Montgomery County. In its heyday, the area was a hub of commercial activity. Today it is the center of recreational sports, including boating and kayaking. The Calleva School operates a variety of training programs nearby.

The Seneca Creek boat ramp is a popular launching spot for boating on the Seneca slackwater area.

A Riley's Lockhouse History Program is run by local Girl Scouts through a special permit from the park. On weekends in the spring and fall, Girl Scouts give tours of the lock house during the afternoons. Riley's Lock is also part of the Seneca Historic District listed in the National Register of Historic Places along with the Seneca Stone Cutting Mill, Seneca Quarry, and other nearby places. The ruins of the Seneca Stone Cutting Mill are only 0.2 miles (0.32 km) west of the lock.

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Contact Information
C&O Canal National Historical Park
142 W. Potomac St., Suite 100
Williamsport MD 21795