Salmon & Steelhead Recovery Tracker

McKenzie River (Independent Population)

McKenzie 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 1,716 1,700
2015 1,608 1,889
2014 1,004 2,103
2013 1,202 2,300
2012 1,769
2011 2,511
2010 1,265
2009 1,193
2008 1,388
2007 2,562
2006 2,050
2005 2,135
2004 3,982
2003 4,178
2002 3,361

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 1,700
2015 1,889
2014 2,103
2013 2,300

Hatchery Proportion

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

Spawning Year Proportion Hatchery
2016 0.53
2015 0.44
2014 0.51
2013 0.33
2012 0.39
2011 0.35
2010 0.61
2009 0.53
2008 0.43
2007 0.28
2006 0.29
2005 0.28
2004 0.27
2003 0.32
2002 0.28

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 0.53 0.46 0.10
2015 0.44 0.43 0.10
2014 0.51 0.41 0.10
2013 0.33 0.39 0.10
2012 0.39 0.38 0.10
2011 0.35 0.38 0.10