A Working Piece of 1830s Engineering
Songo Lock sits on the Songo River in Naples, a hand-operated lock that has been raising and lowering boats between Sebago Lake and Brandy Pond (which connects to Long Lake) since 1830. It is the last surviving lock of the Cumberland and Oxford Canal, a 50-mile waterway that once connected Portland Harbor to the interior lakes and towns as far north as Harrison.
The lock is still operated by hand. A lockkeeper turns the gates using the same basic mechanism that has worked for nearly 200 years, flooding or draining the stone chamber to raise or lower boats the roughly one and a half feet of elevation difference between the two water levels. Watching a boat pass through the lock is a window into a time when canals, not railroads or highways, moved goods and people through Maine’s interior.
Construction on the Cumberland and Oxford Canal began in 1828 and was completed in 1830 at a cost of $206,000. At its peak, more than 100 canal boats, each about 65 feet long, hauled lumber out of the interior and supplies in, towed by horses and oxen through the canal sections and sailed across the lakes. The last commercial boat passed through the canal in 1872, made obsolete by the railroad. But Songo Lock survived, and today it serves recreational boaters making the passage between Sebago Lake and the Long Lake chain.
What to See
The lock itself is the attraction. It is a stone masonry chamber 90 feet long and 26 feet wide, built on one side of a small artificial rubblestone island in the Songo River. The stonework is original, nearly 200 years old, and still holding. The wooden gates at each end are periodically replaced but follow the original design.
During operating hours, you can stand on the bank and watch boats enter the chamber. The lockkeeper closes the downstream gate, opens the upstream sluices, and the water level in the chamber rises (or falls, depending on direction) until it matches the level on the other side. The upstream gate opens, and the boat continues on its way. The whole process takes about 10 to 15 minutes per boat.
On a busy summer day, there may be a queue of boats waiting to pass through, and the lockkeeper cycles through them steadily. It is surprisingly engaging to watch. Kids are fascinated by the water rising and falling, and adults appreciate the simple elegance of a system that has worked without electricity or modern machinery for almost two centuries.
The surrounding area is quiet and shaded, with the Songo River flowing through a wooded corridor. A small parking area and footpath provide access for spectators.
If you have a kayak or canoe, paddle through the lock yourself. The $3 per-boat fee is worth the experience. Entering the stone chamber, watching the water level change around you, and floating out the other side is something you will not find at many other places in New England.
When to Go
Summer
The lock is in full operation with the most boat traffic. Best chance to see the lock in action. Can be busy on hot weekends.
Fall
Lock closes after Labor Day, but the site is still accessible and the fall foliage along the Songo River is beautiful.
Winter
The river and lock are frozen. The site is quiet and largely inaccessible.
Spring
The river is running high. The lock does not operate until mid-June. The site is accessible but there is not much to see without boat traffic.
Practical Notes
The best time to visit is mid-morning on a weekday in July or August. You will see boats passing through without the weekend crowds. Weekends can have long lines of boats waiting, which is interesting in its own way but makes parking tighter and the spectator area more crowded.
The lock charges $3 per boat for passage. Spectators do not pay anything. The parking area is small and can fill up on busy summer weekends. If the lot is full, there is additional parking along the road.
Naples village is about a 5-minute drive from the lock and has restaurants, ice cream shops, a general store, and other lakeside services. The Naples Causeway, on Long Lake, is the social center of the town in summer.
The Songo River Queen, a replica paddle steamer, used to pass through the lock on excursion cruises from Naples. Check locally for current schedules and availability.
Getting There
From Portland, take Route 302 west through Windham and Raymond to Naples. The lock is on the Songo River just off Route 302, roughly 45 minutes from Portland. Signs in Naples direct you to the lock. From Route 302, turn onto Songo Lock Road and follow it to the parking area.
FAQ
Is Songo Lock still working?
Yes. The lock operates daily from mid-June through Labor Day, 9am to 5pm. Boats pass through regularly during the season.
How old is Songo Lock?
The lock was built in 1830 as part of the Cumberland and Oxford Canal. It is the only surviving lock from the original 27 that made up the canal system.
Can I take my boat through the lock?
Yes. Any boat that fits within the 90-foot by 26-foot chamber can pass through during operating hours. The fee is $3 per boat.
Is there a fee to watch?
No. Spectators can watch for free from the bank alongside the lock. Only boats passing through pay the $3 fee.
How does the lock work?
The lockkeeper opens and closes gates and sluices by hand. Water fills or drains from the stone chamber, raising or lowering the boat about one and a half feet to match the water level on the other side. No electricity or pumps are used.
For more in the Lakes Region, see our guides to Sebago Lake and Long Lake.
