Salmon & Steelhead Recovery Tracker

North Santiam River (Independent Population)

North 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 327 343
2015 361 326
2014 366 302
2013 341 280
2012 348
2011 553
2010 292
2009 358
2008 412
2007 309
2006 201
2005 247
2004 127
2003 68
2002 106

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 343
2015 326
2014 302
2013 280

Hatchery Proportion

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

Spawning Year Proportion Hatchery
2016 0.84
2015 0.73
2014 0.76
2013 0.78
2012 0.76
2011 0.64
2010 0.82
2009 0.56
2008 0.27
2007 0.78
2006 0.69
2005 0.70
2004 0.85
2003 0.96
2002 0.87

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 0.84 0.68 0.10
2015 0.73 0.68 0.10
2014 0.76 0.67 0.10
2013 0.78 0.67 0.10
2012 0.76 0.68 0.10
2011 0.64 0.70 0.10