Jimmy Jimmy (Judd) Slough Culvert Replacement

The Jimmy Jimmy (Judd) Slough replacement project consists of the replacement of two existing decommissioned culverts abandoned within the Squamish River Dike with installation of a new flood box designed to control seepage through the dike.  When the dike was first built, two culverts were installed through the dike to maintain flows to the Upper Jimmy Jimmy (Judd) Slough for environmental reasons. In response to flooding in the 1980s, the culverts were closed off and left buried within the dike structure. These abandoned culverts pose a flood threat as they provide a seepage path through the dike. The project proposes to remove the existing culverts within the dike and replace with a 2400mm x 900mm box culvert controlled with automatically operated sluice gates.

The majority of the proposed works would occur on Squamish First Nation Reserve Lands (Wai'wakum Reserve #14). 

Latest update

2022-01-31 - Infrastructure Canada issued its Notice of Determination and determined that the project is not likely to cause significant adverse environmental effects.


Key documents

Key documents
Document Number Document Title File Date
2 Notice of Determination - Jimmy Jimmy (Judd) Slough Culvert Replacement - January 31, 2022
1 Notice of Intent - Jimmy Jimmy (Judd) Slough Culvert Replacement - May 3, 2021


Aboriginal Consultation and Environmental Services
1100 - 180 Kent St
Ottawa, Ontario K1P 0B6
Email: infc.aboriginalconsultenv-consultautochtonesenv.infc@canada.ca

  • Location

    • Jimmy Jimmy (Judd) Slough Culvert Replacement (British Columbia)
  • Nature of Activity

    • Water Management
  • Assessment Status

  • Start Date

  • Proponent

    District of Squamish
  • Authorities

    • Infrastructure Canada
  • 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
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