Gull River Dam 2 Repair, TSW, Minden Hills, Ontario

The proposed dam rehabilitation project is driven by the need to address structural deficiencies identified during inspections, which indicate the dam is approaching the end of its service life. While no immediate safety concerns were observed, critical components such as the sill, abutments, and center pier exhibit significant concrete deterioration, undermining, and scouring, particularly at the bedrock interface. These conditions have resulted in a "poor" asset rating for key structural elements. PCA intends to rehabilitation the dam to maintain structural integrity, prevent further degradation, and ensure continued safe operation of the dam. This project is intended to extend the dam's service life by 10–15 years and defer major maintenance, allowing for more efficient long-term planning. The project is anticipated to initiate in November 2025 with completion in advance of the 2026 spring freshet.

Latest update

October 29 2025 – 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

    2025-07-10

  • Proponent

    Parks Canada

  • Authorities

    • Parks Canada Agency

  • Assessment Type

    Project on federal lands

  • Reference Number

    89720

Nearby assessments

...within 200 kilometres
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