Lock 20 - Ashburnham

Trent-Severn Waterway National Historic Site

Cancellation of Lock & Paddle 2026

Parks Canada has made the difficult decision to cancel Lock & Paddle, scheduled for Saturday, July 18, at the Peterborough Lift Lock National Historic Site.

The decision has been made out of an abundance of caution due to forecasted weather conditions and concerns about air quality, with the health and safety of participants, volunteers and staff remaining our highest priority.

As this event is dependent on the availability of the Peterborough Lift Lock and operational requirements during the navigation season, Lock & Paddle will not be rescheduled this year.

Lock 20 is located at the northeastern corner of Little Lake in Peterborough. Located away from busy roads, this lock station makes for a quiet stop within the city limits. Boaters can walk or bike on the Trans Canada Trail, which cuts through the site. A beautiful location for overnight mooring.

Getting here
Map locations
NameDescriptionCategory
Lock 20 - Ashburnham

175 Maria St, Peterborough, Ontario

Location
  • Nautical chart: #2022 (more on Nautical charts)
  • Kilometer marker: 144.5 km (mile 89.5)
  • GPS: 44°17'59.0"N 78°18'15.9"W

Hours of Operation

Contact:
Navigational data
  • Lock length: 36.6 m (120 ft)
  • Lock width: 9.7 m (32 ft)
  • Average lift: 3.7 m (12 ft)
  • Max. mooring period: 2 nights
Facilities and services
History
Lock 20 Ashburnham
Constructed: 1896-1900

Located on the shore of Little Lake and the Trans-Canada Trail, the lock provided access to the artificial canal cut leading to the Peterborough Lift Lock. Originally the site of private homes, the property was converted to workshops, a maintenance yard and docking area for the canal work crew. Today the original Lockmaster’s Watch House from Lock 20 is being used as a mini-museum at Lock 32.

Tourism information
Google StreetView
Videos
Parks Canada on Youtube

Related links

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