Coats Marsh Weir

Share Coats Marsh Weir on Facebook Share Coats Marsh Weir on Twitter Share Coats Marsh Weir on Linkedin Email Coats Marsh Weir link

The Regional District of Nanaimo (RDN) is planning on removing the concrete weir in Coats Marsh Regional Park, in Electoral Area B on Gabriola Island in fall 2024.

The existing concrete weir in Coats Marsh does not meet provincial safety standards and requires removal or replacement. The RDN is planning to remove the weir from Coats Marsh while keeping the upstream beaver dam in place to preserve the majority of the wetland ecosystem in its present state.

Coats Marsh Regional Park includes approximately 10ha of wetland which drains into Coats Marsh Creek. The wetland is retained by a concrete weir and by a beaver dam, which is approximately 55m upstream of the weir. The locations of the weir and beaver dam have effectively created a "lower" pool located between the weir and beaver dam, and an "upper" pool whose water level is determined by the beaver dam elevation. The upper pool is considerably larger than the lower pool and forms most of the marsh.

More information on the history of the project and how this decision was arrived at can be in the FAQ section of this page.

The Coats Marsh Dam Preliminary Decommissioning Plan is the initial phase of design and planning and is available for review in the Documents section of this page.


Want to get involved and stay updated about this project?

  • Sign up for project updates by subscribing and leaving your email address and we will email updates about the project as it progresses
  • Check out the Project Updates tab below for project updates
  • Attend our public information session on Saturday, January 20, 2024
  • Submit a question or comment through the Q & A tab below. The comment period will be open until Friday, January 26, 2024.

The Regional District of Nanaimo (RDN) is planning on removing the concrete weir in Coats Marsh Regional Park, in Electoral Area B on Gabriola Island in fall 2024.

The existing concrete weir in Coats Marsh does not meet provincial safety standards and requires removal or replacement. The RDN is planning to remove the weir from Coats Marsh while keeping the upstream beaver dam in place to preserve the majority of the wetland ecosystem in its present state.

Coats Marsh Regional Park includes approximately 10ha of wetland which drains into Coats Marsh Creek. The wetland is retained by a concrete weir and by a beaver dam, which is approximately 55m upstream of the weir. The locations of the weir and beaver dam have effectively created a "lower" pool located between the weir and beaver dam, and an "upper" pool whose water level is determined by the beaver dam elevation. The upper pool is considerably larger than the lower pool and forms most of the marsh.

More information on the history of the project and how this decision was arrived at can be in the FAQ section of this page.

The Coats Marsh Dam Preliminary Decommissioning Plan is the initial phase of design and planning and is available for review in the Documents section of this page.


Want to get involved and stay updated about this project?

  • Sign up for project updates by subscribing and leaving your email address and we will email updates about the project as it progresses
  • Check out the Project Updates tab below for project updates
  • Attend our public information session on Saturday, January 20, 2024
  • Submit a question or comment through the Q & A tab below. The comment period will be open until Friday, January 26, 2024.

Questions and Comments

Submit a comment or ask us a question about the Coats Marsh Weir project. We'll do our best to share and respond for all to see. 

loader image
Didn't receive confirmation?
Seems like you are already registered, please provide the password. Forgot your password? Create a new one now.
  • Share I am a retired hydroelectric engineer living on Gabriola and I visit the Marsh and dam regularly. I have technical questions regarding the design. Will there be a chance to discuss my comments/thoughts at the meeting on the 20th? on Facebook Share I am a retired hydroelectric engineer living on Gabriola and I visit the Marsh and dam regularly. I have technical questions regarding the design. Will there be a chance to discuss my comments/thoughts at the meeting on the 20th? on Twitter Share I am a retired hydroelectric engineer living on Gabriola and I visit the Marsh and dam regularly. I have technical questions regarding the design. Will there be a chance to discuss my comments/thoughts at the meeting on the 20th? on Linkedin Email I am a retired hydroelectric engineer living on Gabriola and I visit the Marsh and dam regularly. I have technical questions regarding the design. Will there be a chance to discuss my comments/thoughts at the meeting on the 20th? link

    I am a retired hydroelectric engineer living on Gabriola and I visit the Marsh and dam regularly. I have technical questions regarding the design. Will there be a chance to discuss my comments/thoughts at the meeting on the 20th?

    tvernon asked 6 months ago

    Yes, there will be an opportunity to discuss technical details of the project, or any other questions you may have, at the January 20th public information session. Members of the project team attending the information session will include engineers from Northwest Hydraulics, a biologist from Environmental Dynamics, and the Regional District of Nanaimo project manager. 

    You may also submit questions or comments any time through this Q&A tab or directly to Jordan Vander Klok, Parks Planner, at jvanderklok@rdn.bc.ca

Page last updated: 20 Jan 2024, 08:03 AM