This indicator evaluates the abundance and trend of five coho salmon management units as measured by the number of natural-origin adult fish on the spawning grounds of Puget Sound. Abundance estimates here do not include hatchery-origin fish or coho salmon taken in harvest or by predators like orcas. The indicator is intended to reflect the abundance of wild coho salmon in Puget Sound, which are not federally listed under the Endangered Species Act.
Annual percent change in coho salmon management unit spawner abundance from 2000 to 2023 for each Puget Sound management unit. The lines show the 25th to 75th credibility intervals (CIs). CIs represent a range of values the true annual percent change likely falls within. All CIs contain zero, suggesting no statistically significant change in spawner abundance from 2000 to 2023 for all management units.
No targets are currently set for this indicator.
Washington co-manager agreed-to datasets, as provided by WDFW staff including WDFW Fish Program District Biologists