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Adult Snake River Sockeye ESU Historical and Current Year Mean Travel Time Estimates

Click on a reach travel time in the table to view a plot of the reach-specific daily mean travel time as it varies throughout the season. The date of the daily mean travel time is determined by and plotted on the reach entry date, i.e., the date of the last detection for each PIT-tagged fish at the first project in the reach. The plots include a 95% confidence interval for each reach entry date on which more than one fish started traversing the reach.


Arithmetic mean travel times by reach and year
Reach 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
BON-MCN 4.96     4.47 4.42 4.99 5.81 5.37 6.01 5.82 6.10 5.74 8.47 5.73 5.41 3.99
BON-IHR 6.57     5.95 5.88 9.05 7.65 7.48 8.07 8.38 7.76 7.48 9.01 7.55 7.12 6.26
BON-LGR 10.79 10.02   10.90 9.52 13.75 14.10 11.85 13.57 14.07 16.69 13.65 25.61 13.51 11.86 10.58
BON-TDA                     -0.03 0.05 0.79 0.43 1.64 1.30
BON-LMN                       9.16 11.07 9.45 8.83 7.66
BON-LGS                       10.54 13.41 11.36 10.42 8.83
TDA-MCN                     3.94 3.98 5.39 3.78 3.70 2.71
TDA-IHR                     5.93 5.71 7.11 5.84 5.43 4.99
TDA-LMN                       7.27 9.22 7.77 7.10 6.39
TDA-LGS                       8.62 11.80 9.54 8.68 7.55
TDA-LGR                     14.99 11.70 23.90 11.69 10.12 9.31
MCN-IHR 1.61 1.92   1.48 1.46 1.53 1.78 2.04 1.59 2.39 1.82 1.84 2.77 2.07 1.70 1.43
MCN-LGR 5.83 5.41   6.43 5.10 8.48 8.26 6.45 7.33 8.16 11.38 7.99 19.74 8.13 6.55 5.08
MCN-LMN                       3.51 5.24 4.02 3.38 2.57
MCN-LGS                       4.86 7.58 5.98 5.09 3.45
IHR-LGR 4.22 3.49   4.95 3.64 7.27 6.30 3.77 5.17 5.89 8.52 6.06 17.84 5.77 4.64 4.18
IHR-LMN                       1.43 2.81 1.55 1.35 1.27
IHR-LGS                       2.95 5.57 3.58 3.00 2.43
LMN-LGS                       1.26 2.32 1.60 1.49 0.97
LMN-LGR                       4.41 14.77 3.83 3.21 2.72
LGS-LGR                       2.90 13.07 2.24 1.61 1.75
Standard errors by reach and year
Reach 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
BON-MCN NA     NA NA 0.17 0.28 0.19 0.20 0.27 0.31 0.19 1.13 0.32 0.24 0.19
BON-IHR NA     NA NA 2.50 0.30 0.30 0.14 0.35 0.24 0.19 0.55 0.27 0.29 0.86
BON-LGR NA NA   NA NA 2.01 1.33 0.45 0.24 0.86 1.02 0.67 4.45 0.61 0.45 1.55
BON-TDA                     0.56 0.40 0.43 0.50 0.10 0.05
BON-LMN                       0.22 0.64 0.35 0.40 1.11
BON-LGS                       0.23 0.83 0.43 0.53 1.39
TDA-MCN                     0.32 0.18 1.11 0.22 0.22 0.19
TDA-IHR                     0.21 0.21 0.43 0.28 0.26 0.84
TDA-LMN                       0.20 0.46 0.37 0.38 1.08
TDA-LGS                       0.21 0.62 0.41 0.51 1.37
TDA-LGR                     1.02 0.66 4.41 0.58 0.42 1.54
MCN-IHR NA NA   NA NA 0.12 0.09 0.15 0.32 0.27 0.14 0.10 0.34 0.10 0.07 0.21
MCN-LGR NA NA   NA NA 1.89 1.19 0.33 0.21 0.80 1.02 0.62 4.25 0.52 0.27 0.52
MCN-LMN                       0.17 0.41 0.24 0.28 0.23
MCN-LGS                       0.16 0.52 0.36 0.42 0.29
IHR-LGR NA NA   NA NA 2.13 1.25 0.50 0.22 0.67 1.18 0.61 4.42 0.45 0.25 0.73
IHR-LMN                       0.08 0.27 0.18 0.09 0.23
IHR-LGS                       0.12 0.48 0.28 0.24 0.52
LMN-LGS                       0.17 0.36 0.14 0.14 0.12
LMN-LGR                       0.58 4.20 0.31 0.17 0.38
LGS-LGR                       0.57 4.31 0.24 0.07 0.28
Counts by reach and year
Reach 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
BON-MCN 1 0 0 1 1 15 28 39 347 69 140 218 101 135 44 5
BON-IHR 1 0 0 1 1 15 26 35 320 66 122 208 63 129 42 5
BON-LGR 1 1 0 1 1 15 29 35 334 63 92 203 27 127 40 5
BON-TDA 0 0 0 0 0 0 0 0 0 0 171 294 425 160 56 7
BON-LMN 0 0 0 0 0 0 0 0 0 0 0 218 52 129 44 5
BON-LGS 0 0 0 0 0 0 0 0 0 0 0 210 34 128 41 5
TDA-MCN 0 0 0 0 0 0 0 0 0 0 139 219 103 133 46 5
TDA-IHR 0 0 0 0 0 0 0 0 0 0 121 209 63 127 44 5
TDA-LMN 0 0 0 0 0 0 0 0 0 0 0 218 52 127 46 5
TDA-LGS 0 0 0 0 0 0 0 0 0 0 0 210 34 127 43 5
TDA-LGR 0 0 0 0 0 0 0 0 0 0 91 203 27 126 42 5
MCN-IHR 1 1 0 1 1 14 25 35 314 65 121 204 61 128 43 4
MCN-LGR 1 1 0 1 1 16 28 35 328 62 90 200 27 125 41 4
MCN-LMN 0 0 0 0 0 0 0 0 0 0 0 213 50 128 45 4
MCN-LGS 0 0 0 0 0 0 0 0 0 0 0 205 33 127 42 4
IHR-LGR 1 1 0 1 1 14 26 32 304 61 87 197 26 122 40 5
IHR-LMN 0 0 0 0 0 0 0 0 0 0 0 210 48 125 44 5
IHR-LGS 0 0 0 0 0 0 0 0 0 0 0 204 33 124 41 5
LMN-LGS 0 0 0 0 0 0 0 0 0 0 0 214 34 126 43 5
LMN-LGR 0 0 0 0 0 0 0 0 0 0 0 207 27 124 42 5
LGS-LGR 0 0 0 0 0 0 0 0 0 0 0 206 26 126 41 5

Last Update: Sun Nov 18 18:59:02 2018

Data Courtesy of Pacific States Marine Fisheries Commission

The Snake River Sockeye ESU includes naturally spawned anadromous and residual sockeye salmon originating from the Snake River Basin, and also sockeye salmon from one artificial propagation program: Redfish Lake Captive Broodstock Program. Definition implemented by Columbia River DART: March 2010.