LEVEL OF CONCERN: CRITICAL
Chinook salmon exhibiting spring run timing in the Klamath Basin are likely to disappear in the next 50 years. Small, self-sustaining populations remain primarily in the Salmon and South Fork Trinity rivers, where they are highly vulnerable to climate change, hybridization with hatchery-origin fish, and other stressors.
Recent returns of Upper Klamath-Trinity rivers (UKTR) spring-run Chinook salmon to the South Fork Trinity and Salmon rivers represent a small fraction (< 3%) of historical numbers. Drought from 2012-2016 significantly reduced cold water during critical over-summering periods for spring-run Chinook, contributing to their decline.
Scroll down for more information about the UKTR spring-run Chinook salmon. To read the full species account, click here.
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Fish photo, Jim Inman. Water photo,Wyatt Horsley. People photo, Jacob Katz.