Fish populations

Overview of the Upper Columbia River valley

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What we know about fish populations in the upper Columbia River

Wild salmon continue to need support

The four subbasins of the upper Columbia River support 16 demographically-independent populations of salmon, steelhead, and bull trout. Thirteen of these populations are listed under the federal Endangered Species Act (ESA), and 7 have sufficient data for determining progress toward recovery goals. Spring Chinook have shown no change, while non-ESA listed summer Chinook have increased steadily. Coho salmon had been extirpated (wiped out) since the 1930s but their reintroduction by the Confederated Tribes and Bands of the Yakama Nation continues to succeed. Steelhead numbers are up slightly. Non-listed sockeye have been doing well in most years.

Indicator Data

Adult Abundance Summary Table

Adult fish populations
Juvenile fish populations

Juvenile populations on the rise

The numbers of juvenile Chinook salmon and steelhead in the rivers where they are measured all showed increases except the steelhead in the Wenatchee River. Fish counts were taken in the Chiwawa, Methow, Twisp, and Wenatchee Rivers. That could be good news for future salmon and steelhead runs.

Peak = [PEAK DENSITY] (juveniles/mile)

Visit How we measure for background about this data, and our Salmon Data Portal for original source data behind the indicator charts and graphs used throughout this site.