Polly Creek Ecopassage Phase 2 – Ecopassage and Fencing

An ecopassage, along with wildlife fencing, will be installed in the Polly Creek area in the fall of 2027. This area is part of the ecologically significant Jones Creek watershed and is located next to the Highway 401 on County Road 5 near the entrance of the Wolf Trail in Thousand Islands National Park. The project focuses on improving wildlife connectivity and reducing road mortality near the Polly Creek culvert, which crosses an important wetland habitat supporting species at risk. The ecopassage will be 1.8m high x 3.6m wide, allowing for the passage of species as large as medium-sized mammals (e.g., deer, bobcats). Fencing (1m-1.5m in height) will be installed adjacent to the ecopassage on both the east and west side of County 5 to guide animals to the ecopassage and reduce wildlife mortality and vehicle damage. Throughout construction of the ecopassage, traffic will be reduced to a single lane during the approximately month-long project. Project designs are being finalized this fall, with procurement and construction anticipated for summer-fall 2027.

Latest update

October 14, 2026 – Parks Canada intends to make a determination regarding whether the carrying out of the project is likely to cause significant adverse environmental effects. To help inform this determination, Parks Canada is inviting public comments until November 13, 2026 respecting that determination.

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Key documents

Key documents
Document number Document title File Date
1 New project being assessed by Parks Canada – Public comments invited from October 14, 2026 to November 13, 2026 - October 14, 2026

Contacts

Thousand Islands National Park
2 County Road 5, RR 3
Mallorytown ON K0E 1R0
Telephone: 613-923-5261
Fax: 613-923-1021
Email: pnmille-iles-thousandislandsnp@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

    • Thousand Islands National Park of Canada (Ontario)

  • Nature of activity

    • Remediation and conservation

  • Assessment status

    In progress

  • Start date

    2026-10-14

  • Proponent

    Parks Canada

  • Authorities

    • Parks Canada Agency

  • Assessment type

    Project on federal lands

  • Reference number

    90836

Nearby assessments

...within 200 kilometres
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