Recreational Boating

Lockage Schedule

The St. Lawrence Seaway Management Corporation (SLSMC) will introduce a new harmonized service model for pleasure craft during the 2016 season, with dates and times of locks in operation the same as those for the locks operated by Parks Canada.

The Saint-Lambert Côte-Sainte-Catherine and Beauharnois locks will be open for passage of pleasure craft from May 12 to October 9, 2017, at the following dates and times:

Friday, May 12 to Sunday, June 11, 2017 9:00 am to 5:00 pm
Friday, June 12 to Monday, September 4, 2017
(Labour Day)
9:00 am to 8:00 pm
Tuesday, September 5 to Monday, October 9, 2017 (Thanksgiving) 9:00 am to 5:00 pm
Outside of these dates, a request for exemption must be sent 72 hours in advance to
(service subject to availability)
72 hours’ advance request

To guarantee passage at day’s end, pleasure craft must be at the lock one (1) hour before the end of the service interval indicated above. Transit of the South Shore Canal or Beauharnois sections will be permitted if commercial maritime traffic allows.

In addition, two (2) daily scheduled lockages are planned during the peak season.

Lockage information is updated twice daily, at approximately 7:30 and 13:00.

The time specified reflects the earliest point at which service may be provided.  Service may be provided at any point within the hour following the time indicated. Pleasure crafts should be at the lock at the indicated time to ensure that they are eligible to be serviced within the one hour period.

This information is provided on a “best efforts” basis only, and we cannot guarantee the accuracy of the information. Changes in traffic patterns or unforeseen incidents may trigger changes or delays in the posted schedule.

The same information on lockage times is available via audio recording at 450-672-4110 extension 2235.

There will be no preset lockage schedules for pleasure craft at the Snell and Eisenhower locks in the US or the Iroquois lock in Ontario.

The schedule for the Laroque Lift Bridge in Valleyfield is also available on our website.