West Coast Salmon Vulnerability:
Species Specific Results

We assessed Pacific salmon’s vulnerability to changing climate and ocean conditions to better understand these changes and their impact on different population groups of Pacific salmon. The report, the second in a series of planned NOAA Fisheries’ vulnerability assessments, focuses on the 33 threatened and endangered Pacific salmon and steelhead population groups (technically defined as distinct population segments and evolutionary significant units) of greatest concern. Species-specific results for each population group can be explored by selecting the cards below. Chart of species with sensitivity and exposure marking low to high vulnerability by species

Risk Level and Number of Population Groups

Steelhead
Northern California Steelhead
Steelhead
Central California Coast Steelhead
Steelhead
South‑
Central California Coast Steelhead
Steelhead
Southern California Steelhead
Steelhead
Puget Sound Steelhead
Steelhead
Upper Columbia River Steelhead
Steelhead
Snake River Basin Steelhead
Steelhead
Middle Columbia River Steelhead
Steelhead
Upper Willamette River Steelhead
Steelhead
Lower Columbia River Steelhead

Chinook
Lower Columbia River Chinook
Chinook
Upper Willamette River Chinook
Chinook
Puget Sound Chinook
Chinook
Snake River fall‑run Chinook
Chinook
Snake River spring/
summer‑run Chinook
Chinook
Middle Columbia River spring-run Chinook
Chinook
Upper Columbia River spring-run Chinook
Chinook
Central Valley fall/late fall‑run Chinook
Chinook
Central Valley spring‑run Chinook
Chinook
Sacramento River winter‑run Chinook
Chinook
California Coastal Chinook

Coho
Central California Coast Coho
Coho
Southern Oregon/
Northern CA Coast Coho
Coho
Oregon Coast Coho
Coho
Lower Columbia River Coho
Coho
Puget Sound Coho


Chum
Columbia River Chum
Chum
Puget Sound Chum
Chum
Hood Canal summer‑run Chum

Sockeye
Lake Ozette Sockeye
Sockeye
Snake River Sockeye

Pink
Odd-year Pink

Marine Threats

Sea Surface Temperature
Sea
Surface Temp

ocean acidification
Ocean Acid- ification
sea level rise
Sea Level Rise
upwelling
Upwelling

stream temp
Stream Temp
Drought     
Flooding
Flooding    
snow melt
Snow Melt 
other stressors
Other Stressors
population viability
Population Viability
hatcheries Hatcheries