24 September 2026

Two locks

It was a picture-perfect, early fall day. Ty and I went to Dam 5 of the C&O Canal for a hike (walk). Dam 5 is currently under construction and was fenced off. There was a detour, around the lockhouse, to get to the towpath. We headed in the direction of  Locks 45 and 46. We walked farther than we had before, past the cliff. After awhile, the path opened up to Lock 46 and Lockhouse 46. There was also construction at Lock 46. The lockhouse was boarded up. While it appears well-preserved, it's not one you can stay at. 

Detour at Dam 5 Lockhouse 45 (such vivid colors!)

Blue waters of the Potomac
My hiking buddy Ty
Cliff ledge
Member of the Aster family
Lock 45
Steep limestone cliffs

Locks 45 and 46 were collectively known as "Two Locks." The pair is situated in an area where steep limestone cliffs along the Potomac River made digging a canal channel nearly impossible and definitely too expensive. Instead engineers used Dam 5 to back up the Potomac River and create a calm channel (called the slackwater) where the boats could safety travel. Lock 46 served as a transition point where mules switched from the river towpath back onto the canal towpath. There are structural remains of the historic mule bridge at Lock 46.


Lockhouse 46
Arched culvert at Lock 46

Lock 46
A scenic path along the cliffs
Honeysuckle (invasive) berries
Danger Dam!
Ty hanging out at Lock 46
Shelf fungi growing on a dead log
Gray rock -- no more graffiti
Dead logs
Peace
River access for Ty