Lock 40 - Thorah

Trent-Severn Waterway National Historic Site

Lock 40 is situated in a beautiful pastoral setting with an abundance of maple trees and shaded areas. Located away from road traffic, it is a stark contrast of peace, quiet and one of the nicest day use and overnight areas on the Waterway.

Getting here
  • Address: 33245 Region Road #50, Beaverton, Ontario
  • Nautical chart: #2025 (more on Nautical charts)
  • Kilometer marker: 289.8km (mile 180.1)
  • GPS: 44°29'38.0"N 79°08'22.5"W

Hours of Operation


Navigational data
  • Lock length: 36.6 m (120 ft)
  • Lock width: 9.7 m (32 ft)
  • Average lift: 4.3 m (14 ft)
  • Max. mooring period: 2 nights

Facilities and services
aerial view of Thorah lockstation
Constructed: 1900-1907

The Balsam - Simcoe Division was constructed at a time of horse and man-power, and workers measured its length by the number of cuts of blasted limestone. Today, visitors can walk or bicycle on the private canal road between Locks 39-41, which runs along the top of earthen dams. This road is otherwise closed to vehicles, offering a quiet place for boaters to moor overnight.

Tourism information
Google Street View

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