Permanent Fish Weir at Duncan Dam

This spring, BC Hydro will begin work to install a new permanent fish weir at Duncan Dam. The new permanent fish weir will be installed in the same location as the old weir to improve upstream migration of bull trout and avoid manual annual weir installation, which will be both safer and more efficient. This will be a permanent structure constructed using a concrete foundation and steel plates that will withstand the full discharge of the low-level outlet gate.

We are aiming to complete construction during one season – from May 1 to August 1, 2023.This is an extension of our originally anticipated work window for this year, which was scheduled from May 15 to June 30, 2023. Construction may resume in the spring of 2024 if we are unable to complete all the work this year.

Please let me know if you have any questions about this project. I can be reached directly at 250-365-4565 or by email at