Salmon & Steelhead Recovery Tracker

South Santiam River (Independent Population)

South Santiam River Independent Population

Oncorhynchus tshawytscha

Abundance

Annual estimates of the abundance of naturally-produced spawners for Upper Willamette River populations.

Spawning Year Wild Adult Count Nat. Origin Spawners 95% Confidence Interval Abundance Goal Average Abundance
2016 499 523
2015 629 496
2014 886 460
2013 631 414
2012 544
2011 756
2010 376
2009 913
2008 323
2007 245
2006 209
2005 268
2004 171
2003 200
2002 330

Average Abundance

Twelve years of data are necessary to evaluate this metric. Data will become available after a suitable number of years of monitoring have occurred.

Spawning Year Average Abundance Avg. of Ab.Goal
2016 523
2015 496
2014 460
2013 414

Hatchery Proportion

The proportion of spawning fish that are of hatchery origin in Upper Willamette River populations.

Spawning Year Proportion Hatchery
2016 0.85
2015 0.59
2014 0.42
2013 0.45
2012 0.67
2011 0.61
2010 0.84
2009 0.36
2008 0.62
2007 0.86
2006 0.84
2005 0.80
2004 0.82
2003 0.87
2002 0.86

Average Hatchery Proportion

Nine years of data are necessary to evaluate this metric. Data will become available after a suitable number of years of monitoring have occurred.

Spawning Year Proportion Hatchery 9-yr. pHOS Avg. pHOS Limit
2016 0.85 0.60 0.30
2015 0.59 0.60 0.30
2014 0.42 0.63 0.30
2013 0.45 0.67 0.30
2012 0.67 0.71 0.30
2011 0.61 0.74 0.30