Gilholmes Lake Flow Control Structure

The Cape Breton Regional Municipality (CBRM) is proposing to construct a water flow control structure at the outflow from Gilholmes Lake on the Sydney Rifle Range property owned by the Department of National Defence (DND). The proposed work is a component of the larger Wash Brook Flood Mitigation Project initiated by CBRM following a major flooding event that occurred in Sydney in October 2016. This part of the proposed Project will entail the construction of an earthen berm across the outflow of Gilholmes Lake and the installation of a flow control structure and pre-cast concrete rectangular box culvert that will allow water to pass through the berm. The flow control structure is anticipated to regulate the release of surface water from Gilholmes Lake following extreme rainfall events.

Latest update

October 7, 2021— The Department of National Defence issued its Notice of Determination and determined that the project is not likely to cause significant adverse environmental effects.




Civil / Marine Engineer, Real Property Operations Section (Halifax)
Department of National Defence
Joe Williams, Civil / Marine Engineer, Real Property Operations Section (Halifax)
Real Property Operations Section (Halifax)
Maritime Forces Atlantic, PO 99000 Station Forces
Halifax, Nova Scotia B3K 5X5

  • Location

    • Gilholmes Lake, Sydney (Nova Scotia)
  • Nature of Activity

    • Building and Property Development
    • Maintenance activities (fences, walls)
  • Assessment Status

  • Start Date

  • Proponent

    Cape Breton Regional Municipality
  • Authorities

    • Department of National Defence
  • Assessment Type

    Project on federal lands
  • Reference Number


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.


Nearby assessments

...within 200 kilometres
Date modified: