Hill Island Quarry Restoration

This project will involve restoration work at Hill Island's quarry site. The site was used for aggregate extraction prior to it becoming part of Thousand Islands National Park in the late 70's. Experimental restoration plantings at the site have proven that hyperabundant deer heavily browse all new unprotected vegetation, leading to high seedling mortality. Over the past several years, six test 20m x 20m deer exclusion fence plots were established and have resulted in high tree survival rates. The main project elements include installing a total of 8000 ft. of 7.5 ft. high deer exclusion fence to facilitate restoration of this 5-hectare area. In total, there will be 5-6 fenced areas that will be planted with native tree species starting in fall 2023 and continuing in spring 2024. The majority of the work will be done with the use of hand tools.


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

July 9, 2023 – The public comment period on the project is closed. Parks Canada is 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

Key documents
Document Number Document Title File Date
1 New project being assessed by Parks Canada - Public comments invited from June 9 to July 9, 2023 - June 9, 2023


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

  • Location

    • Thousand Islands National Park of Canada (Ontario)
  • Nature of Activity

    • Remediation and conservation
  • Assessment Status

    In progress
  • Start Date

  • Proponent

    Parks Canada
  • Authorities

    • Parks Canada Agency
  • Assessment Type

    Project on federal lands
  • Reference Number


Nearby assessments

...within 200 kilometres
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