Salmon Snapshots

Middle and Upper Klamath River

2016/17 Population

Estimate of Ocean Returning Fish

Coho

Oncorhynchus kisutch

Chinook

Oncorhynchus tshawytscha

Steelhead

Oncorhynchus mykiss

  What We Have In-River Return: Hatchery Return:     In-River Return: Hatchery Return:
  Unknown 97 384
Fall 7,751 5,164 2,587
  unknown
  What We Need    
  8,950
Fall *
  *
Notes:

Population estimates for natural spawners represents both naturally produced and hatchery produced adult fish and jacks (age 2 fish). Chinook estimates derived from a combination of redd counts and mark/recapture. Coho numbers represent the population estimate for Bogus Creek tributary only; estimates made from direct count video weir. Data provided by California Department of Fish and Wildlife. Data are preliminary and subject to change.

Tributaries, CDFW and USFS estimates. For Bogus Creek tributary, CDFW direct count video weir. Iron Gate Hatchery (IGH). Adults+Jacks.

Coho salmon in the Middle and Upper Klamath River are federally listed as threatened. The “What We Need” spawner population abundance targets shown above represent just one of several criteria that the National Marine Fisheries Service considers when determining whether a species should be removed from the Federal List of Endangered and Threatened Wildlife and Plants (50 CFR 223.102). Recovering any of the species entails meeting criteria for abundance, productivity, diversity, and spatial structure across multiple watersheds, as well as criteria for alleviating threats (NMFS 2014).

* Chinook and steelhead are not considered at risk of extinction. No target defined.

The 2016/17 snapshot is defined as fall 2016 to spring 2017, as per when salmon and steelhead return from the ocean to spawn. Fall Chinook spawning season is fall 2016. Coho season is fall through early January 2017. Steelhead season can start in fall 2016 but is primarily winter and spring 2017.   

References

National Marine Fisheries Service. 2014. Final Recovery Plan for the Southern Oregon Northern California Coast Evolutionarily Significant Unit of Coho Salmon (Oncorhynchus kisutch). September 2014.

 

fish images © Joe Tomelleri

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