A Geologic Barrier
At Widewater the canal builders used a river channel abandoned thousands of years ago by the Potomac when it cut its present gorge. At this bend, just above Widewater, the engineers found a steep cliff where the old channel ended, and had to build an immense buttressed wall to cradle the canal and towpath about 70 feet above the present river level.
Erected by Chesapeake and Ohio Canal National Historical Park - National Park Service, U.S. Department of the Interior.
Topics and series. This historical marker is listed in these topic lists: Parks & Recreational Areas • Waterways & Vessels. In addition, it is included in the Chesapeake and Ohio (C&O) Canal series list.
Location. 38° 59.902′ N, 77° 14.917′ W. Marker is in Potomac, Maryland, in Montgomery County. Marker is on Chesapeake and Ohio Canal Towpath, on the left when traveling north. Marker is located within the Chesapeake and Ohio Canal National Historical Park. Touch for map. Marker is in this post office area: Potomac MD 20854, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Fighting Floods (a few steps from this marker); Creating a National Park (within shouting distance of this marker); Great Falls Tavern (about 700 feet away, measured in a direct line); a different marker also named Great Falls Tavern (about 700 feet away); Washington Aqueduct (approx. 0.2 miles away); Welcome to Great Falls (approx. 0.2 miles away); Olmsted Island (approx. 0.2 miles away); People and the Potomac (approx. 0.3 miles away in Virginia). Touch for a list and map of all markers in Potomac.
Credits. This page was last revised on January 12, 2021. It was originally submitted on January 11, 2021, by Tom Bosse of Jefferson City, Tennessee. This page has been viewed 42 times since then. Photos: 1, 2, 3. submitted on January 11, 2021, by Tom Bosse of Jefferson City, Tennessee. • Bill Pfingsten was the editor who published this page.