LEVEL OF CONCERN: CRITICAL
Sacramento River winter-run Chinook salmon (winter-run) face immediate risk of extinction. The ESU has been extirpated from its native spawning range by dams and has been reduced to a single small spawning population, which is wholly dependent on artificially-created spawning habitat and cold water releases from Shasta Reservoir.
Multiple critically dry years (2012-2016) in a row during the drought reduced the amount of cold water available for release from Shasta Reservoir. Warm water releases drastically reduced winter- run egg and juvenile survival and have likely devastated the population.
Scroll down for more information about the Sacramento River winter-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.