Salmon & Steelhead Recovery Tracker

North Santiam River (Independent Population)

North Santiam River Independent Population

Oncorhynchus mykiss

Abundance

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

Spawning Year Wild Adult Count Nat. Origin Spawners 95% Confidence Interval Abundance Goal
2008 2,789
2007 2,863
2006 2,965
2005 1,650
2004 3,863
2003 4,013
2002 3,227
2001 3,375
2000 2,437
1999 2,211
1998 1,970
1997 1,919
1996 2,180
1995 1,560
1994 2,273
1993 2,305
1992 2,116
1991 2,933
1990 2,972
1989 4,026
1988 2,082
1987 3,854
1986 3,935
1985 5,935
1984 3,568
1983 3,566
1982 3,153
1981 3,500
1980 4,039

Average Abundance

Spawning Year Average Abundance Avg. of Ab.Goal

Hatchery Proportion

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

Spawning Year Wild Adult Count Total Adult Count Proportion Hatchery Proportion Hatchery Below Dam
2011
2008 0.00
2007 0.00
2006 0.00
2005 0.00
2004 0.00
2003 0.00
2002 0.00
2001 0.00
2000 0.12
1999 0.27
1998 0.30
1997 0.09
1996 0.11
1995 0.11
1994 0.13
1993 0.16
1992 0.15
1991 0.15
1990 0.15
1989 0.15
1988 0.15
1987 0.15
1986 0.15
1985 0.15
1984 0.15
1983 0.15
1982 0.15
1981 0.15
1980 0.15

Average Hatchery Proportion

Spawning Year 9-yr. pHOS Avg. pHOS Limit