Unsupported Browser Detected

Internet Explorer lacks support for the features of this website. For the best experience, please use a modern browser such as Chrome, Firefox, or Edge.

Biological Opinion on the Effects of Proposed Klamath Project Operations from May 31, 2013, through March 31, 2023, on Five Federally Listed Threatened and Endangered Species

May 31, 2013

Endangered Species Act Section 7(a)(2) Biological Opinion - NMFS Consultation Number: SWR-2012-9372; USFWS Consultation Number: 08EKLA00-2013-F-0014

This document transmits the concurrence determinations and biological opinions of the U.S. Fish and Wildlife Service and the National Marine Fisheries Service, based on our review of the proposed operations of the Klamath Project  by the Bureau of Reclamation  in Klamath County in Oregon and Siskiyou and Modoc Counties in California. The biological opinion describes the Services' analysis of the effect of Reclamation's implementation of the proposed operations of the Klamath Project through March 31, 2023, on:

  • Threatened southern distinct population segment  of North American green sturgeon (Acipenser medirostris), 
  • Threatened southern DPS of Pacific eulachon (Thaleichthys pacificus), 
  • Threatened Southern Oregon/Northern California Coast (SONCC) coho salmon (Oncorhynchus kisutch) evolutionarily significant unit (ESU), 
  • Endangered Lost River sucker (Deltistes luxatus), 
  • Endangered shortnose sucker (Chasmistes brevirostris), and 
  • Designated critical habitat for the southern DPS of Pacific eulachon, SONCC coho salmon ESU, Lost River sucker, and shortnose sucker in accordance with section 7(a)(2) of the ESA. 


Last updated by West Coast Regional Office on 05/19/2022