Marker Logo HMdb.org THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Great Falls in Montgomery County, Maryland — The American Northeast (Mid-Atlantic)
 

A Lift Lock

Chesapeake and Ohio Canal National Historical Park

 
 
A Lift Lock Marker image. Click for full size.
By Don Morfe, November 10, 1994
1. A Lift Lock Marker
Inscription. When a river, such as the Potomac, was too swift or shallow for navigation, shippers built canals with lift locks along the river course. The C & O Canal consists of flat stretches of water connected by lift locks. The use of locks enabled the canal to match the riverís gradient.

Water was permitted to flow into, or out of, the lock by opening or closing a paddle at the bottom of each lock gate.

(Inscriptions on the left)
1. A boat heading downstream enters the lock. The mules are unhitched and let downstream.
2. The lock gates are closed.
3. The downstream paddles are opened, water flows out, and the boat is lowered.
4. With water levels equal, mules are hitched, and the lock gates are opened, the boat continues downstream.
 
Erected by National Park Service US Department of Interior.
 
Marker series. This marker is included in the Chesapeake and Ohio Canal marker series.
 
Location. 39° 0.013′ N, 77° 14.905′ W. Marker is in Great Falls, Maryland, in Montgomery County. Marker is on MacArthur Blvd.. Touch for map. The marker is near the Great Falls Tavern Visitor Center. Marker is in this post office area: Potomac MD 20854, United States of America.
 
Other nearby markers. At least 8 other markers are within

A Lift Lock-C & O Canal image. Click for full size.
By Don Morfe, November 10, 1994
2. A Lift Lock-C & O Canal
walking distance of this marker. Great Falls Tavern (a few steps from this marker); Boats Passing By (a few steps from this marker); Washington Aqueduct (within shouting distance of this marker); Creating a National Park (about 400 feet away, measured in a direct line); Olmsted Island (approx. 0.3 miles away); People and the Potomac (approx. 0.4 miles away in Virginia); River of Change (approx. 0.4 miles away in Virginia); A Globally Rare Environment (approx. 0.4 miles away in Virginia). Touch for a list and map of all markers in Great Falls.
 
Categories. Waterways & Vessels
 
Canal Boat image. Click for full size.
By Don Morfe, November 10, 1994
3. Canal Boat
Potomac River at Great Falls image. Click for full size.
By Don Morfe, November 10, 1994
4. Potomac River at Great Falls
Potomac River at Great Falls image. Click for full size.
By Don Morfe, November 10, 1994
5. Potomac River at Great Falls
Sign at the entrance to C & O Canal National Historical Park image. Click for full size.
By Don Morfe, November 10, 1994
6. Sign at the entrance to C & O Canal National Historical Park
 
 
Credits. This page was last revised on January 9, 2017. This page originally submitted on January 7, 2017, by Don Morfe of Baltimore, Md 21234. This page has been viewed 151 times since then. Photos:   1, 2, 3, 4, 5, 6. submitted on January 7, 2017, by Don Morfe of Baltimore, Md 21234. • Bill Pfingsten was the editor who published this page.
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