Salmon Snapshots

Navarro River

2014/15 Population

Estimate of Ocean Returning Fish

Coho

Oncorhynchus kisutch

Chinook

Oncorhynchus tshawytscha

Steelhead

Oncorhynchus mykiss

What We Have  
412
2
484
What We Need  
5,700
787 - 1576
7800
Notes:
Population estimate (derived from redd counts) provided by California Department of Fish and Wildlife. The California Coastal Salmonid Monitoring Program for Navarro River initiated in 2008/09. Zeros represent no spawners detected. The 95th % confidence interval is 189 to 659 for coho and 182 to 1,680 steelhead. Data are preliminary and subject to change.
 

Coho salmon are federally listed as endangered. Chinook and steelhead 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 2012, NMFS 2016).

The 2014/15 snapshot is defined as fall 2014 to spring 2015, as per when salmon and steelhead return from the ocean to spawn. Fall Chinook spawning season is fall 2014. Coho season is fall through early January 2015. Steelhead season can start in fall 2014 but is primarily winter and spring 2015. Spring Chinook return in spring 2015 and spawn in fall 2015.

References

National Marine Fisheries Service. 2012. Final Recovery Plan for Central California Coast Coho Salmon Evolutionarily Significant Unit. National Marine Fisheries Service, Southwest Region, Santa Rosa, California.

National Marine Fisheries Service. 2016. Final Coastal Multispecies Recovery Plan. National Marine Fisheries Service, West Coast Region, Santa Rosa, California.

fish images © Joe Tomelleri

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