Cooperative Research Units
Education, Research And Technical Assistance For Managing Our Natural Resources
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Humboldt Bay Coho Monitoring


June 2017 - September 2020


The California Department of Fish and Wildlife and the National Oceanic and Atmospheric Administration Fisheries cooperatively developed the draft Coastal California Salmonid Monitoring Plan (CMP) Fish Bulletin 180. Two complementary tasks are considered high priority in the northern monitoring area and form the foundation of the CMP approach. The first task consists of probabilistic sampling of stream reaches within a defined region using spawning ground surveys to establish the regional status and trends of adult salmonid abundance. This project will carry out these spawning ground surveys in Humboldt Bay tributaries, adding to the database of 8 years of survey data. Continuing the long-term monitoring of adult abundance in these populations is essential for status and trends assessment of regional salmon stocks.


Current Staff

Federal Staff: 1

Masters Students: 10

Phd Students: 0

Post Docs: 0

University Staff: 1

5 Year Summary

Students graduated: 8

Scientific Publications: 4

Presentations: 23



  • Margaret WilzbachCo-Principal Investigator
  • Mark HendersonCo-Principal Investigator
  • Grace GhristStudent
  • Madison HalloranStudent

Funding Agencies

  • California Department of Fish and Wildlife


California Cooperative Fish and Wildlife Research Unit Cooperators

  1. California Department of Fish and Wildlife
  2. Humboldt State University
  3. U.S. Fish and Wildlife Service
  4. U.S. Geological Survey
  5. Wildlife Management Institute