Long Lake Dam Replacement

The project is a complete replacement of the dam in the same location as the existing dam. The main work involves the complete demolition of the existing main dam, construction of a new dam in the same location and orientation. Other works include clearing for laydown and project staging and construction of temporary cofferdams. Parks Canada owns the asset but not the associated, adjacent properties. Therefore, this is not a "project" as defined under section 81 of the Impact Assessment and is not being conducted under the Act. Rather the assessment is being conducted under Parks Canada's IA Directive (2019), to meet Parks Canada's mandated obligations to protect Canada's natural and cultural heritage.

Latest update

June 1 2026 – Parks Canada issued its Notice of Determination and determined that the project is not likely to cause significant adverse environmental effects.

Participate

Contacts

Trent-Severn Waterway National Historic Site
P.O. Box 567
Peterborough, Ontario K9J 6Z6
Telephone: 705-750-4900 or 1-888-773-8888
Email: trentsevern@pc.gc.ca


Disclaimer

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.

  • Location

    • Trent-Severn Waterway National Historic Site of Canada (Ontario)

  • Nature of Activity

    • Dams and reservoirs

  • Assessment Status

    Completed

  • Start Date

    2025-06-02

  • Proponent

    Parks Canada

  • Authorities

    • Parks Canada Agency

  • Assessment Type

    Project on federal lands

  • Reference Number

    89587

Nearby assessments

...within 200 kilometres
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