This report is a living document. It will be updated as we add new Regions to the Pacific Salmon Explorer, as updated data become available, as our data sources, methods, and approaches incrementally evolve, and as we receive feedback on this report. We will update the version number with each new version of the report. To access old versions of the report, please contact

Illustration by Aimée van Drimmelen.


Thank you to everyone who has supported and been a part of this collaborative effort to gather, synthesize, and improve access to data on salmon and their freshwater habitats in British Columbia. In particular, we thank the members of the Advisory and Technical Committees who helped guide this work, ground the assessments in local knowledge, and ensure that the products of this work are relevant and useful for decision making across scales. These Technical committees have included First Nations groups and individual Nations across all seven Regions currently within the Pacific Salmon Explorer, as well as local and regional Fisheries and Oceans Canada staff, staff from the Province of BC, and other salmon experts. Our Population Science Advisory Committee has helped us adapt and hone our methods as we have expanded our work in both scope and geography. Our sincere thanks for your interest, support, and trust in us and in this work, and for sharing your time and expertise with us. We would also like to thank Periscopic Inc. for their technological proficiency in building the Pacific Salmon Explorer tool with us.

We also thank our funders for supporting this work to date. Thank you to the Gordon and Betty Moore Foundation, the Government of Canada through Fisheries and Oceans Canada’s Coastal Restoration Fund, the Pacific Salmon Endowment Fund Society, the Government of British Columbia, Environment and Climate Change Canada’s Habitat Stewardship Fund, and the Willow Grove Foundation.

This report was produced by the Pacific Salmon Foundation’s Salmon Watersheds Program. Thank you to all program staff who have been involved in the body of work described in this report, including Katrina Connors, Eric Hertz, Leah Honka, Eileen Jones, Katy Kellock, Christine Stevenson, Charlotte Whitney, and Vesta Mathers.

Illustration by Aimée van Drimmelen.


Pacific Salmon Foundation. 2023. Methods for Assessing Status and Trends in Pacific Salmon Conservation Units and their Freshwater Habitats. The Pacific Salmon Foundation, Vancouver BC, Canada. Version 12.