Replacement of the doors of locks 1 and 2 at the Lachine Canal

The project consists of the complete replacement of the gates of Locks 1 and 2 of the Lachine Canal NHS in Montreal. Preliminary analyses of the gates of Locks 1 and 2 have determined that the gates and the mechanical systems for opening and controlling the water levels (valves) cannot be repaired and, therefore, must be completely replaced and modified. The project will replace the lock gates, currently made of wood, with gates made entirely of steel. The project includes dewatering of the work area and relocation of aquatic wildlife. 


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Latest update

September 22, 2023 – The public comment period on the project is closed. Parks Canada and Transport Canada are considering comments received to help inform its determination on whether the carrying out of the project is likely to cause significant adverse environmental effects.


Key documents


Lachine Canal National Historic Site
105, McGill Street, 6th Floor
Montréal, Quebec H2Y 2E7
Telephone: 450-447-4832

  • Location

    • Lachine Canal National Historic Site (Quebec)
  • Nature of Activity

    • Other, not otherwise specified
    • Maintenance activities (fences, walls)
  • Assessment Status

    In progress
  • Start Date

  • Proponent

    Parks Canada
  • Authorities

    • Parks Canada Agency
    • Transport Canada
  • Assessment Type

    Project on federal lands
  • Reference Number


Nearby assessments

...within 200 kilometres
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