Salmon & Steelhead Recovery Tracker

Coastal (Stratum)

The Coastal biogeographic stratum includes Lower Columbia watersheds in Oregon from the Youngs River to the Scappoose River. There are a total of 4 independent populations in the stratum.

Oncorhynchus kisutch

Abundance

Annual estimates of the abundance of naturally-produced spawners for each stratum.

Spawning Year Nat. Origin Abundance 95% Confidence Interval
2016 1,878 665
2015 822 1,087
2014 5,496 1,086
2013 1,823 445
2012 1,367 252
2011 2,165 488
2010 3,993 1,185
2009 2,791 611
2008 1,729
2007 1,535
2006 1,439
2005 1,140
2004 1,414
2003 1,447
2002 1,178

Hatchery Proportion

Spawning Year Proportion Hatchery pHOS Comments
2016
2015
2014
2013
2012 0.18
2011 0.19
2010 0.07
2009 0.31
2008 0.05
2007 0.15
2006 0.28
2005 0.25
2004 0.46
2003 0.42
2002 0.74