{"abstract":"Previously, NMFS completed a comprehensive status review of west coast chinook salmon (Oncorhynchus tshawytscha) populations in Washington, Oregon, Idaho, and California and identified 15 ESUs within this range. After soliciting additional data to resolve scientific disagreements, NMFS now issues a final rule to list two ESUs as threatened under the Endangered Species Act (ESA). The Central Valley spring-run ESU was originally proposed as endangered, but new information indicates that the ESU should instead be considered a threatened species. The California Coastal ESU was originally proposed as threatened, as part of a larger Southern Oregon and California Coastal ESU, but new information supports a threatened listing for a revised ESU consisting of California coastal chinook salmon populations from Redwood Creek (Humboldt County) south through the Russian River. Other coastal populations to the north of this ESU (and originally proposed as threatened) are now considered part of a separate Southern Oregon and Northern California Coastal ESU that does not warrant listing at this time. NMFS is also making final listing determinations for two other chinook salmon ESUs originally proposed as threatened. It has considered new information about the Central Valley fall and late fall- run ESU and has determined that listing is not warranted at this time, but it will consider it a candidate species. In the case of the proposed ESU expansion for threatened Snake River fall-run chinook salmon, NMFS has determined that the ESU does not include Deschutes River populations and that listing this latter population is not warranted at this time. In the two ESUs identified as threatened, only naturally spawned populations of chinook salmon are listed. At this time, no hatchery populations are deemed essential for recovery in either of the two listed ESUs, so no hatchery populations are part of this final listing determination. NMFS intends to issue protective regulations under section 4(d) of the ESA for these threatened ESUs. Even though NMFS is not now issuing protective regulations for the threatened ESUs, Federal agencies are required under section 7 to consult with NMFS if any activity they authorize, fund, or carry out may affect listed chinook salmon in these ESUs.","action":"Final rule; notice of determination.","agencies":[{"raw_name":"Rule"},{"raw_name":"DEPARTMENT OF COMMERCE","name":"Commerce Department","id":54,"url":"https://www.federalregister.gov/agencies/commerce-department","json_url":"https://www.federalregister.gov/api/v1/agencies/54","parent_id":null,"slug":"commerce-department"},{"raw_name":"National Oceanic and Atmospheric Administration","name":"National Oceanic and Atmospheric Administration","id":361,"url":"https://www.federalregister.gov/agencies/national-oceanic-and-atmospheric-administration","json_url":"https://www.federalregister.gov/api/v1/agencies/361","parent_id":54,"slug":"national-oceanic-and-atmospheric-administration"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/1999/09/16/99-24051.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"223","title":50}],"citation":"64 FR 50394","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"Effective November 15, 1999.","disposition_notes":null,"docket_ids":["Docket No. 990303060-9231-03","I.D. 022398C"],"dockets":[],"document_number":"99-24051","effective_on":"1999-11-15","end_page":50415,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":null,"html_url":"https://www.federalregister.gov/documents/1999/09/16/99-24051/endangered-and-threatened-species-threatened-status-for-two-chinook-salmon-evolutionarily","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/99-24051?publication_date=1999-09-16","mods_url":"https://www.govinfo.gov/metadata/granule/FR-1999-09-16/99-24051/mods.xml","not_received_for_publication":null,"page_length":22,"page_views":{"count":632,"last_updated":"2026-08-26 10:15:07 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-1999-09-16/pdf/99-24051.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"1999-09-16","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/1999/09/16/99-24051.txt","regulation_id_number_info":{"0648-AM54":{"issue":"199910","html_url":"https://www.federalregister.gov/regulations/0648-AM54/endangered-and-threatened-species-status-of-chinook-salmon-in-washington-idaho-oregon-and-california","title":"Endangered and Threatened Species; Status of Chinook Salmon in Washington, Idaho, Oregon and California and Designation of Critical Habitat","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=199910&RIN=0648-AM54&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["0648-AM54"],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-09-21T09:49:46Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":50394,"subtype":null,"title":"Endangered and Threatened Species; Threatened Status for Two Chinook Salmon Evolutionarily Significant Units (ESUs) in California","toc_doc":null,"toc_subject":null,"topics":[],"type":"Rule","volume":64}