Lower Columbia River Chinook

ESA Listing Status: Threatened on June 28, 2005 pdf format 295kb; updated April 14, 2014 pdf format 503kb

ESU Definition: This evolutionarily significant unit, or ESU, includes naturally spawned Chinook salmon originating from the Columbia River and its tributaries downstream of a transitional point east of the Hood and White Salmon Rivers, and any such fish originating from the Willamette River and its tributaries below Willamette Falls. Not included in this DPS are: (1) spring-run Chinook salmon originating from the Clackamas River; (2) fall-run Chinook salmon originating from Upper Columbia River bright hatchery stocks, that spawn in the mainstem Columbia River below Bonneville Dam, and in other tributaries upstream from the Sandy River to the Hood and White Salmon Rivers; (3) spring-run Chinook salmon originating from the Round Butte Hatchery (Deschutes River, Oregon) and spawning in the Hood River; (4) spring-run Chinook salmon originating from the Carson National Fish Hatchery and spawning in the Wind River; and (5) naturally spawning Chinook salmon originating from the Rogue River Fall Chinook Program. This DPS does include Chinook salmon from 15 artificial propagation programs:

Current Population Trends:

Critical Habitat: Designated Sept. 2, 2005 pdf format 1.1MB

Protective Regulations: Issued June 28, 2005 pdf format 295kb

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