Lock 4
Lock 4 is the last of the four lock raising the canal in under half a mile. Stone for the first four locks was boated 40 miles upstream from a quarry along the Aquia Creek in Stafford Country, VA. Aquia Creek sandstone, or Freestone, was a popular source for construction of many buildings in Washington, including the U.S. Capitol.
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Mile Marker: 0.4
Nearby Amenities:
- Georgetown Visitor Center
Approximately 0 miles away. - Douglas Bust
Approximately 0 miles away. 
Georgetown Parking (Streets and Garages)
Approximately 0.1 miles away.- Georgetown
Approximately 0.2 miles away. - Thompson Boat House Parking Lot
Approximately 0.3 miles away.
