Coos Canyon
River · Maine
About this swimming hole
Coos Canyon on the Swift River in Byron is a 32-foot gorge where water depth occasionally exceeds 20 feet, with Toby’s Beach just downriver. Wikipedia notes the Swift River is a popular place to swim at the canyon, which also has a 20-foot ledge used by jumpers. A campground sits across Route 17, and the canyon is free to visit.
Good to know
| Water type | River |
|---|---|
| Best season | June-September |
| Fees | Free |
| Reservations required | No |
| Parking | Roadside lot on Rt 17 |
| County | Oxford County |
| Nearest town | Byron |
| Safety notes | Deep water; cliff jumping hazards; slippery rocks |
Map
Nearby swimming holes
Frequently asked questions
Does Coos Canyon require reservations?
No reservations are required at Coos Canyon based on current information — but verify before you go.
Is there a fee to visit Coos Canyon?
Reported fee info: Free. Fees can change — confirm with the official link.
When is the best time to visit Coos Canyon?
The best season is typically June-September.
⚠️ Verify before you go. Conditions, fees, reservations, and access can change — confirm details with the official link before visiting. Last verified: September 2026