Arcata Fish and Wildlife Office
Pacific Southwest Region
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VISION: "Working with partners to restore and maintain fish and other aquatic resources at self-sustaining levels and to support Federal mitigation programs for the benefit of the American public."


Fisheries Current Events:

03/13/2018 - March 12, 2018 Klamath River outmigrant monitoring update posted to AFWO website

03/06/2018 - 2017 Prevalence of Infection in Klamath River Basin Juvenile Chinook Salmon posted to AFWO website

12/20/2017 - Regional Implementation Plan for Measures to Conserve Pacific Lamprey (Entosphenus tridentatus), California - San Francisco Bay Regional Management Unit.

12/20/2017 - Performance of water temperature management on the Klamath and Trinity rivers, 2016

08/15/2017 - USFWS Arcata has developed a data set of Pacific Lamprey Historic and Current Distribution avialable on California Department of Fish and Wildlife BIOS website.

05/05/2017 - DOI has postponed all Trinity River Adaptive Managment Working Group meetings until further notice.



arrow bulletThe distribution of salmon spawning is monitored annually in the Trinity River by Trinity River Restoration Program (TRRP) partners for response on two scales. Redd distribution on a fine spatio-temporal scale is characterized for response to localized changes in channel morphology as they relate to spawning habitat. Spawning distribution on a broad spatio-temporal scale is characterized for the Program’s influence on habitats for multiple life histories expressed in spawning distribution over....More Details...


Last updated: April 16, 2015