Sediment Removal at Hope Slough, Chilliwack

The British Columbia Ministry of Environment and Climate Change Strategy proposes to dredge 8,550 m3 of accumulated sediment (i.e., fines and sands) from the mouth of Hope Slough to re-establish the bed elevations and cross sections to pre-November 2021 atmospheric river event (ARE) levels. Indigenous communities are located adjacent to Hope Slough, and the accumulated sediment has increased flood risk and impaired traditional activities. In addition, the accumulated sediment impairs fish migration during low flow conditions. The sediment volume proposed to be removed is equivalent to the volume estimated to have been deposited by the November 2021 ARE. The project is expected to require 21 days of active construction, during the least risk to fish work window of August 1 – September 15, 2024. Fish habitat offsetting measures are proposed, including enhancements to aquatic and riparian habitat of Hope Slough.

Latest update

July 5, 2024 – The public comment period on the project is closed. DFO 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.



Triage & Planning Unit; Fisheries Protection Program; Ecosystem Management Branch
Fisheries and Oceans Canada
200 - 401 Burrard Street
Vancouver, British Columbia V6C 3S4
Telephone: 1-866-845-6776

  • Location

    • Hope Slough, Chilliwack (British Columbia)
  • Nature of Activity

    • Maintenance activities (fences, walls)
    • Remediation and conservation
  • Assessment Status

    In progress
  • Start Date

  • Proponent

    British Columbia Ministry of Environment and Climate Change Strategy
  • Authorities

    • Fisheries and Oceans 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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