Salmon & Steelhead Recovery Tracker

Oregon Coast (ESU)

The Oregon Coast Coho Evolutionarily Significant Unit (ESU) encompasses Oregon coastal watersheds from the Necanicum River in the north to the Sixes River in the south.

According to the Oregon Workgroup of the Oregon Northern California Coast Technical Recovery Team (TRT), the Oregon Coast Coho ESU is comprised of a total of 56 historical populations. Thirteen populations are identified as functionally independent, eight as potentially independent, and 35 as dependent populations. For more information on the Oregon Coast Coho ESU population structure see Lawson et al. 2007.

Currently, Oregon Coast coho are listed as threatened under the United States Endangered Species Act. In 2007, based on guidance provided by ODFW’s Native Fish Conservation Policy, the State of Oregon completed the Oregon Coast Coho Conservation Plan. The plan establishes benchmarks or “measurable criteria” designed to facilitate tracking of progress towards goals for abundance, persistence, productivity, distribution and diversity of Oregon Coast coho populations as well as the condition of their habitat. With the exception of spawner abundance, the goals established for these measurable criteria are available only at the population scale.

Oncorhynchus kisutch

Abundance

Annual estimates of the abundance of naturally-produced spawners.

Spawning Year Nat. Origin Spawners Abundance Goal Percent of Goal
2016 75,904 715,200 11.0%
2015 57,125 371,000 15.4%
2014 359,692 816,900 44.0%
2013 124,411 715,200 17.4%
2012 99,145 715,200 13.9%
2011 356,244 816,900 43.6%
2010 283,405 816,900 34.7%
2009 262,735 816,900 32.2%
2008 179,686 715,200 25.1%
2007 66,271 371,000 17.9%
2006 128,819
2005 154,595
2004 172,778
2003 227,557
2002 253,094
2001 161,818
2000 73,691
1999 47,042
1998 32,475
1997 23,661
1996 81,022
1995 60,771
1994 47,024

Evaluation Thresholds

Pass -the observed spawner abundance is > the marine survival-specific escapement target at least six times in any 12-year period.

Fail - the observed spawner abundance is > the marine survival-specific escapement target 5 times or less in any 12-year period.