Adult Chinook Migration in the Klamath River Basin:

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Adult Chinook Salmon Migration Behavior
Implications of Flow Management in the Trinity
River
Josh Strange Yurok Tribal Fisheries Program
University of Washington School of Aquatic
and Fishery Sciences
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Research Goal
To comprehensively document and understand adult
Chinook migration in the Klamath River Basin.
Photo Barry McCovey Jr.
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Research Objectives

• Document
• - Thermal refugia use
• Estuary residence and behavior
• Thermal experience
• Run timing
• Travel rates and behavior
• Evaluate
• - Non-lethal stress
• Disease triggers
• Flow release schedules
• Adaptive management prescriptions
• Wild and depressed stocks

Photo Barry McCovey Jr.
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RESULTS
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Estuary Residence and Behavior
3 km
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River
Estuary Salt Wedge
Ocean
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Estuary re-entry
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Photo Coastal Society
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Migration Behavior
Four groupings based on run-timing and
destinations with consistency in migration
behavior

• Spring Chinook
• Summer Chinook
• Klamath Fall Chinook
• Trinity Fall Chinook

Photo by author
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Spring Chinook
Photo by author
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Summer Chinook
Photo by author
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Trinity Fall Chinook
Photo by author
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Klamath Fall Chinook
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Photo Mike Belchik
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Photo YTFP
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• Collaborators
• Yurok Tribal Fisheries Program
• US Fish Wildlife Service, Arcata Field Office
• Karuk Tribe DNR
• Hoopa Fisheries
• CA Dept. of Fish Game
• US Forest Service - Orleans Ranger District
• Salmon River Restoration Council
• North State Resources, Inc.

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• Funders
• Klamath Basin Fisheries Task Force
• Trinity River Restoration Program
• Yurok Tribe
• NOAA Fisheries Arcata Office
• USBR Klamath Area Office
• National Science Foundation Graduate Research
  and Fellowship Program

• Key People Thank You!
• Thesis Committee Robert Wissmar, Tom Quinn,
  Walt Dickoff
• Yurok Tribal Fisheries Program personnel
• Countless volunteers and supportive fellow
  students and the FISH!

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Questions?
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Flavobactor columnare
Photo by author
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Photo Mike Belchik
Ichthyopthirius multifilis ICH
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BLUE CREEK
Photo by author
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