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You are here: Home / Weir Ready

Weir Ready

WEIR READY

The need to design a new weir for Cowichan Lake was set in motion when, in response to increasing frequency of critically low summer flows in the Cowichan River, a partnership was formed by the Cowichan Valley Regional District (CVRD), Cowichan Tribes, the Cowichan Watershed Board and Catalyst Paper (a Paper Excellence company) to conduct a Water Use Planning study as per the Province of BC Water Use Plan (WUP) Guidelines.

A Public Advisory Group was formed and, beginning in the Fall of 2017 and finishing in the Spring of 2018, the group developed a Water Use Plan (WUP) for Cowichan Lake and Cowichan River that provides a balanced, long term solution for storing water on Cowichan Lake in order to maintain sufficient water flows in the Cowichan River into the future. The key recommendation of the WUP is to construct a new weir with an increase of 70 cm of elevation above the existing weir.

A condition of this recommendation is that an assessment be done to understand thepotential impacts to Cowichan Lake shoreline due to the additional storage, (go to the Cowichan Lake Shoreline Assessment Project page to learn more about this effort).

Work is currently underway to design a new weir for the Cowichan Lake that will store adequate water for future needs, while reflecting the visual, environmental and recreation goals of the community. Climate change is driving longer, hotter, drier summers, resulting in reduced water levels and flow in the Cowichan River. A new weir would result in maintaining water levels and river flows that will provide enough water to support:

  • Fish spawning, habitat, and passage
  • Flora and fauna in the Cowichan Estuary
  • Recreation on the Cowichan River
  • Sport fishing
  • Water supply for surrounding community
  • Water supply for industrial use
  • Wastewater dilution requirements

The development of the new weir design is being funded entirely by the BC Salmon Restoration and Innovation Fund through a grant that was awarded by Fisheries and Oceans Canada to address the following key issues:

  • Develop the necessary engineering designs, environmental impact assessments and geotechnical studies, cost estimates and tender documents to allow the partners or others to support a future water license application for a new structure.
  • Design the temporary works and the removal of the existing infrastructure to reduce environmental impacts and allow for the potential beneficial reuse of systems components if applicable.
  • Provide the necessary information to support future regulatory review.

Videos

DOCUMENTS

Posted on December 19, 2018

Cowichan River Weir Replacement Initiative

Posted on February 29, 2016

Cowichan Weir Operations: 2015 Review, 2016 Conditions to Date

Posted on May 21, 2015

Environmental Appeal Board dismisses appeal of new "operating rule curve" for the weir

On May 30, 2013, the Deputy Comptroller of Water Rights issued an order adopting a…

Posted on January 21, 2014

Cowichan Lake Weir, Pumping, and Water Release - Barry Chilibeck

Posted on December 17, 2012

Cowichan Lake Weir - Provisional Rule Band Operating Rules - KWL - 17Dec2012

Check Out Our Other Projects

Khowutzun Forest Services Flows and Fish habitat field crew training. Koksilah River.
Khowutzun Forest Services Flows and Fish habitat field crew training. Koksilah River.
FISH HABITATS
Tim Kulchyski, Cowichan Tribes member, Fisheries biologist, Koksilah River. Taylor Roades
Tim Kulchyski, Cowichan Tribes member, Fisheries biologist, Koksilah River. Taylor Roades
INDIGENOUS FLOWS
Stth'aqwi' the Big Dancing Fish meets friend, MLA Sonia Furstenau.
Stth'aqwi' the Big Dancing Fish meets friend, MLA Sonia Furstenau.
BIG DANCING FISH

Latest News

  • Xwulqw’selu / Koksilah Info Night
  • Job Posting EXTENDED: Executive Director
  • Report: Twinned Watershed Project – Xwulqw’selu/Koksilah River Environmental Flow Assessment
  • Media Release: BC’s First Water Sustainability Plan Being Developed for Koksilah Watershed

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