ESU STATUS AND DESCRIPTION:  Listed as an endangered species on March 24, 1999; endangered status reaffirmed on June 28, 2005.  The ESU includes all naturally spawned populations of Chinook salmon in all river reaches accessible to Chinook salmon in Columbia River tributaries upstream of the Rock Island Dam and downstream of Chief Joseph Dam in Washington (excluding the Okanogan River), the Columbia River from a straight line connecting the west end of the Clatsop jetty (south jetty, Oregon side) and the west end of the Peacock jetty (north jetty, Washington side) upstream to Chief Joseph Dam in Washington, as well as six artificial propagation programs: the Twisp River, Chewuch River, Methow Composite, Winthrop NFH, Chiwawa River, and White River spring-run Chinook hatchery programs. CRITICAL HABITAT STATUS: A final designation was published on Sept. 2, 2005 (PDF 9.7MB), with an effective date of Jan. 2, 2006. PROTECTIVE REGULATIONS:  The take prohibitions of section 9 of the Endangered Species Act that apply to this ESU were published on June 28, 2005. STATUS REVIEWS & UPDATES:  Click here to view a list. FEDERAL REGISTER NOTICES: Click here to view a list. MAPS & GIS DATA: Click here to view.