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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
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
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
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
BON-TDA                     -0.03 0.05 0.79 0.43 1.64
BON-LMN                       9.16 11.07 9.45 8.83
BON-LGS                       10.54 13.41 11.36 10.42
TDA-MCN                     3.94 3.98 5.39 3.78 3.70
TDA-IHR                     5.93 5.71 7.11 5.84 5.43
TDA-LMN                       7.27 9.22 7.77 7.10
TDA-LGS                       8.62 11.80 9.54 8.68
TDA-LGR                     14.99 11.70 23.90 11.69 10.12
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
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
MCN-LMN                       3.51 5.24 4.02 3.38
MCN-LGS                       4.86 7.58 5.98 5.09
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
IHR-LMN                       1.43 2.81 1.55 1.35
IHR-LGS                       2.95 5.57 3.58 3.00
LMN-LGS                       1.26 2.32 1.60 1.49
LMN-LGR                       4.41 14.77 3.83 3.21
LGS-LGR                       2.90 13.07 2.24 1.61
Standard errors by reach and year
Reach 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
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
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
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
BON-TDA                     0.56 0.40 0.43 0.50 0.10
BON-LMN                       0.22 0.64 0.35 0.40
BON-LGS                       0.23 0.83 0.43 0.53
TDA-MCN                     0.32 0.18 1.11 0.22 0.22
TDA-IHR                     0.21 0.21 0.43 0.28 0.26
TDA-LMN                       0.20 0.46 0.37 0.38
TDA-LGS                       0.21 0.62 0.41 0.51
TDA-LGR                     1.02 0.66 4.41 0.58 0.42
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
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
MCN-LMN                       0.17 0.41 0.24 0.28
MCN-LGS                       0.16 0.52 0.36 0.42
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
IHR-LMN                       0.08 0.27 0.18 0.09
IHR-LGS                       0.12 0.48 0.28 0.24
LMN-LGS                       0.17 0.36 0.14 0.14
LMN-LGR                       0.58 4.20 0.31 0.17
LGS-LGR                       0.57 4.31 0.24 0.07
Counts by reach and year
Reach 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
BON-MCN 1 0 0 1 1 15 28 39 347 69 140 218 101 135 44
BON-IHR 1 0 0 1 1 15 26 35 320 66 122 208 63 129 42
BON-LGR 1 1 0 1 1 15 29 35 334 63 92 203 27 127 40
BON-TDA 0 0 0 0 0 0 0 0 0 0 171 294 425 160 56
BON-LMN 0 0 0 0 0 0 0 0 0 0 0 218 52 129 44
BON-LGS 0 0 0 0 0 0 0 0 0 0 0 210 34 128 41
TDA-MCN 0 0 0 0 0 0 0 0 0 0 139 219 103 133 46
TDA-IHR 0 0 0 0 0 0 0 0 0 0 121 209 63 127 44
TDA-LMN 0 0 0 0 0 0 0 0 0 0 0 218 52 127 46
TDA-LGS 0 0 0 0 0 0 0 0 0 0 0 210 34 127 43
TDA-LGR 0 0 0 0 0 0 0 0 0 0 91 203 27 126 42
MCN-IHR 1 1 0 1 1 14 25 35 314 65 121 204 61 128 43
MCN-LGR 1 1 0 1 1 16 28 35 328 62 90 200 27 125 41
MCN-LMN 0 0 0 0 0 0 0 0 0 0 0 213 50 128 45
MCN-LGS 0 0 0 0 0 0 0 0 0 0 0 205 33 127 42
IHR-LGR 1 1 0 1 1 14 26 32 304 61 87 197 26 122 40
IHR-LMN 0 0 0 0 0 0 0 0 0 0 0 210 48 125 44
IHR-LGS 0 0 0 0 0 0 0 0 0 0 0 204 33 124 41
LMN-LGS 0 0 0 0 0 0 0 0 0 0 0 214 34 126 43
LMN-LGR 0 0 0 0 0 0 0 0 0 0 0 207 27 124 42
LGS-LGR 0 0 0 0 0 0 0 0 0 0 0 206 26 126 41

Last Update: Thu Oct 19 18:59:02 2017

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.