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NWVI Tsunami Mapping Project – Phase 1 Maps Now Available Online

Phase 1 of tsunami modelling for the northwest coast of Vancouver Island, from Muchalaht Inlet to Cape Scott Provincial Park is now available online at

Campbell River, BC – The Strathcona Regional District (SRD) in partnership with the Ka:’yu:’k’t’h’/Che:k:tles7et’h’ First Nations and Nuchatlaht First Nation have completed Phase 1 of tsunami modelling for the northwest coast of Vancouver Island, from Muchalaht Inlet to Cape Scott Provincial Park. This is a collaborative endeavor with five First Nations, four municipalities, two Regional Districts and several private and provincial stakeholders made possible by through a Flood Planning grant through the Union of BC Municipalities.


We are pleased to announce that the following maps from Phase 1 of this project are now available online at

  • Tsunami amplitude and velocity maps for the entire project area.
  • Overland tsunami inundation maps for 25 areas within the Kyuquot and Nuchatlitz Grids.


“These maps present the anticipated effects of a tsunami at high tide with an additional freeboard (safety factor) to capture the most probable worst-case scenarios from the Cascadia Subduction Zone and Alaska Aleutian Subduction Zone” said Strathcona Regional District Chair Brad Unger. “The Regional District’s next steps will be to host in-person public engagement sessions later this month in the Kyuquot and Nuchatlitz grids to discuss and educate the public about the impact of these maps on land use planning, conceptual mitigation options and evacuation considerations.”


“We always knew that tsunamis are a devastating potential threat to our west coast communities, and we have been taking numerous life safety actions accordingly such as stocking seacans with essentials survival supplies and more, at these communities’ tsunami muster sites” said Shaun Koopman, SRD Protective Services Coordinator.  “Now that we finally know the extent of the overland wave and we truly understand the risk, a number of informed and meaningful community conversations can begin.”


Phase 2 of this project will begin in Spring of 2022 under funding provided by a private donor and will include:

  • The design, purchase and installation of outdoor tsunami inundation map signs to educate the public about tsunami risk in their areas;
  • Production of a short film sharing the indigenous story of the 1,700 Cascadia tsunami event and information from the risk assessment;
  • Development of an interactive, internet-based ‘Story Map’ to illustrate the tsunami risk assessment data;
  • Delivery of a “Waves of Knowledge” earthquake and tsunami science education module for K-12 students in four communities; and
  • Conducting higher-resolution tsunami risk assessments for the Mt. Waddington Regional District (Quatsino Grid) and Gold River (Nootka Grid).


To learn more about the Northwest Vancouver Island Tsunami Mapping Project and view the Phase 1 maps, visit

Media Contact:   Shaun Koopman – SRD Protective Services Coordinator      250-830-6702   |

Pictured – four grids represented in the high-resolution overland tsunami mapping. Phase 1 of the project focused on the Kyuquot & Nuchatlitz Grids and phase 2 will be Quatsino & Nootka Grids