Salmon Snapshots

Shasta River

2015/16 Population

Estimate of Ocean Returning Fish

Coho

Oncorhynchus kisutch

Chinook

Oncorhynchus tshawytscha

Steelhead

Oncorhynchus mykiss

What We Have  
45
6,745
168
What We Need  
4,700
*
*
Notes:

Population estimate for coho represent both naturally produced and hatchery produced adult fish and jacks (age 2 fish) that spawn naturally in the river. Incomplete data for steelhead due to monitoring ending prior to majority of steelhead migration. Estimates made from direct count video weir and spawning survey results. Data provided by California Department of Fish and Wildlife. Data are preliminary and subject to change.

Coho salmon in the Shasta basin are state and 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 salmon and steelhead populations in the Shasta basin not considered at risk of extinction by NMFS. No target defined.

The 2015/16 snapshot is defined as fall 2015 to spring 2016, as per when salmon and steelhead return from the ocean to spawn. Fall Chinook spawning season is fall 2015. Coho season is fall through early January 2016. Steelhead season can start in fall 2015 but is primarily winter and spring 2016. Spring Chinook return in spring 2016 and spawn in the fall 2016.


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.

Williams, T. H., B.C. Spence, W. Duffy, D. Hillemeier, G. Kautsky, T.E. Lisle, M. McCain, T.E. Nickelson, E. Mora, and T. Pearson. 2008. Framework for assessing viability of Threatened coho salmon in the Southern Oregon/Northern California Coast Evolutionary Significant Unit. U.S.Department of Commerce, NOAA Technical Memorandum NMFS-SWFSC-432. 

fish images © Joe Tomelleri

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