The Muskingum River system of locks and dams is the oldest of its kind in the USA. No wonder. At the business end of the river is the town of Marietta, the oldest settlement in the Northwest Territory. But during the 1800s and early 1900s, the river flooded terribly in the spring and dried up in the summer. Starting in 1836, Ohio built 11 hand-operated locks and dams that made the Muskingum navigable from Marietta to the Ohio and Erie Canal.
But the locks and dams deteriorated to useless until about 1960 when the state took ownership again. Today it's managed by the Ohio Department of Natural Resources. Thankfully! Today the 11 locks are: #11 Ellis, #10 Zanesville, #9 Duncan Falls/Philo, #8 Eagleport, #7 McConnelsville, #6. Stockport, #5 Luke Chute, #4. Beverly, #3. Lowell, #2. Devol's, and #1 Marietta.
You can see the engineering of #2 in this video of the Valley Gem in lock #2: https://www.youtube.com/watch?v=-F764XLNZaI I have been on the Valley Gem in the lock. The engineering is stunning in its simplicity in controlling the better part of a million gallons of water.
On my visit to #2 way back in the fall of 2018, I got to meet the manager of the lock, who showed us around. Free tour. It's one those places where you can sense the awesome power even when it's quiet. read more