Salmon & Steelhead Recovery Tracker

Clatskanie (Independent Population)

Oncorhynchus tshawytscha

Abundance

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

Abundance estimates are only available for Hood River fall chinook, and Clackamas, Sandy and Hood River Spring Chinook. Most available data are from dam counts. Marked fish were not passed above the dams.

Spawning Year Wild Adult Count Nat. Origin Spawners 95% Confidence Interval Abundance Goal Average Abundance
2016 2 15
2015 4 938 15
2014 7 1,046 19
2013 3 1,041 21
2012 8 973 23
2011 13 867 25
2010 12 777 25
2009 94 25
2008 9 17
2007 9 20
2006 4 20
2005 10 21
2004 11 21
2003 48 21
2002 39 18
2001 26 15
2000 26 16
1999 10 15
1998 9 17
1997 7 17
1996 46 17
1995 9 14
1994 6 15
1993 13 18
1992 13 18
1991 13 19
1990 8 19
1989 28 20
1988 19 19
1987 34 19
1986 14 17
1985 8
1984 11
1983 14
1982 46
1981 14
1980 23
1979 14
1978 15
1977 15
1976 15
1975 18
1974 7

Evaluation Thresholds

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

Delisting

Pass - The observed spawner abundance is greater than or equal to the abundance modeled for delisting at least six times in any 12-year period and the average observed spawner abundance is greater than or equal to the average modeled abundance for delisting over that same time period.

Fail - The observed spawner abundance is greater than or equal to the abundance modeled for delisting less than six times in any 12-year period or the average observed spawner abundance is less than the average modeled abundance for delisting over that same time period.

Broadsense

Pass - The observed spawner abundance is greater than or equal to the abundance modeled for delisting at least six times in any 12-year period and the average observed spawner abundance is greater than or equal to the average modeled abundance for broad sense recovery over that same time period.

Fail - The observed spawner abundance is greater than or equal to the abundance modeled for delisting less than six times in any 12-year period or the average observed spawner abundance is less than the average modeled abundance for broad sense recovery over that same time period.

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

Evaluation Thresholds

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

Delisting

Pass - The observed spawner abundance is greater than or equal to the abundance modeled for delisting at least six times in any 12-year period and the average observed spawner abundance is greater than or equal to the average modeled abundance for delisting over that same time period.

Fail - The observed spawner abundance is greater than or equal to the abundance modeled for delisting less than six times in any 12-year period or the average observed spawner abundance is less than the average modeled abundance for delisting over that same time period.

Broadsense

Pass - The observed spawner abundance is greater than or equal to the abundance modeled for delisting at least six times in any 12-year period and the average observed spawner abundance is greater than or equal to the average modeled abundance for broad sense recovery over that same time period.

Fail - The observed spawner abundance is greater than or equal to the abundance modeled for delisting less than six times in any 12-year period or the average observed spawner abundance is less than the average modeled abundance for broad sense recovery over that same time period.

Hatchery Proportion

The proportion of spawning fish that are of hatchery origin in each lower Columbia River population.

Estimates of Hatchery Proportion are only available for Hood River fall chinook, and Clackamas, Sandy and Hood River spring chinook. Most available data are from dam counts. Marked fish were not passed above the dams.

Spawning Year Proportion Hatchery
2016 0.98
2015 0.91
2014 0.91
2013 0.92
2012 0.90
2011 0.91
2010 0.88
2009 0.44
2008 0.90
2007 0.90
2006 0.90
2005 0.90
2004 0.90
2003 0.90
2002 0.90
2001 0.90
2000 0.90
1999 0.90
1998 0.90
1997 0.90
1996 0.90
1995 0.90
1994 0.90
1993 0.90
1992 0.90
1991 0.90
1990 0.90
1989 0.90
1988 0.90
1987 0.90
1986 0.90
1985 0.90
1984 0.90
1983 0.90
1982 0.90
1981 0.90
1980 0.90
1979 0.90
1978 0.90
1977 0.90
1976 0.90
1975 0.90
1974 0.90

Average Hatchery Proportion

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

Spawning Year Proportion Hatchery 9-yr. pHOS Avg. pHOS Limit

Evaluation Thresholds

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

Delisting

Pass – Over a nine-year period, the average percentage of the total number of natural spawners that are of hatchery origin is on average less than or equal to the population specific hatchery stray rate target.

Fail – Over a nine-year period, the average percentage of the total number of natural spawners that are of hatchery origin is on average greater than the population specific hatchery stray rate target.

Broadsense

Pass – Over a nine-year period, the average percentage of the total number of natural spawners that are of hatchery origin is on average less than or equal to 10 percent.

Fail – Over a nine-year period, the average percentage of the total number of natural spawners that are of hatchery origin is on average greater than 10 percent.