Chesapeake and Ohio Canal National Historical Park | LOCK AND LOCKHOUSE 56

Lock and Lockhouse 56 at Mile 136.2 on the C&O Canal towpath

Lock and Lockhouse 56 at Mile 136.2 on the C&O Canal towpath


Lock and Lockhouse 56 are located at Mile 136.2 on the C&O Canal towpath. A dirt road off of Pearre Road leads to a small parking area next to the lock. See the Locks and Lockhouses web page for an interactive location map.


Along with the lock itself stands Lockhouse 56 (it is not open to the public). A lockhouse is the residence of the man who is hired to operate the lock. In addition to a yearly salary, he and his family—almost all lockkeepers were family men—lived in the company-provided lockhouse and had use of an acre of land for farming. Those who tended multiple locks got extra money per lock, up to two. The locks had to be very close together for the C&O Canal Company to assign multiple locks to one person.

Operating the lock was a year-round, 24-hour-a-day job. When a canal boat approached, the captain would blow a horn to notify the lockkeeper. If it were nighttime, somebody had to wake up and go to work. Of course that’s the benefit of being a family man—your kids had to get up for the late night and early morning arrivals!

Like the other lockhouses at the far western end of the Chesapeake and Ohio Canal, Lockhouse 56 is made of wood. As you travel towards Georgetown you will find more and more stone lockhouses. The reason for this is that it was harder to deliver quarried stone to the western end of the canal, so the houses were built with wood, and the stone was reserved for the construction of the locks.

Lockhouse 56 on the Chesapeake and Ohio Canal

Lockhouse 56 on the Chesapeake and Ohio Canal

There is a spot on the Potomac River for launching canoes and kayaks at Lock 56. At the time of this writing, there even appears to be a rental company operating here during the summer.

Canoe rental company operating at Lock 56 on the Chesapeake and Ohio Canal

Canoe rental company operating at Lock 56 on the Chesapeake and Ohio Canal

Canoe launch at Lock 56 on the Chesapeake and Ohio Canal

Canoe launch at Lock 56 on the Chesapeake and Ohio Canal

If you don’t mind walking a little farther, the Sideling Hill Creek Aqueduct is another .4 mile upstream.

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Last updated on June 30, 2026
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