Guide to Clowes Lock – Rideau Canal

The Rideau Canal is now closed for navigation for 2022 as of October 10th. Locks will not operate outside these dates, but you can still paddle the canal. The exact opening times for locks are available on the official Rideau Canal website; opening hours vary throughout the season.

The entrance to Clowes Lock is east of Merrickville on Highway 2. Keep a good lookout, it is signposted but looks a bit like you are driving into someone’s yard. Parking is just as you enter the property although it seems to be OK to drive down to the lock to drop off your kit.

Portage at the lock - Clowes Lock - Rideau Canal
Portage near the campsites at the lock - Clowes Lock - Rideau Canal
Planning the next part of the trip - Clowes Lock - Rideau Canal

General Information

  • Lock Number(s)/Flights: #20
  • Lock Lift metres (feet): 2.3 (7.6)
  • Co-ordinates (Google maps): 44.94618, -75.82246
  • Civic Address: 495 Heritage Drive, Montague, Ontario
  • Lock Station Phone: 613-269-4426
  • Portage: Yes
  • Boat launch: No
  • Kayak/Canoe Launch: Yes
  • Previous Lock(Distance): Upper Nicholsons Lock (0.8)
  • Next Lock (Distance): Merrickville Lock #21 (3.5)


  • Parking: Yes (free). It’s located as soon as you enter the property. No parking down by the lock.
  • Camping: Yes ($), if arriving by water and also for cyclists and hikers.
  • BBQ/Picnic Tables: Picnic tables & BBQs
  • Washrooms: Yes
  • Power Supply: Nothing dedicated but you can charge electronics in the washrooms (not secure)
  • Garbage/Recycling: Yes
  • Potable (Drinking) Water: Yes, but do check with the lockmaster.
  • Public Telephone:


  • Local Supplies: No
  • Hiking Trails: No
  • Cell Phone Reception: