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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 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
LGR-LGS 3.38 1.74 3.08 5.45 3.11 5.01 3.33 2.54 2.35 3.77 3.63 1.95 2.55 2.45 2.50 5.36
LGR-LMN 6.90 3.31 9.02 9.13 3.94 5.56 4.15 3.70 3.95 4.86 5.55 3.04 3.74 4.28 3.92 7.01
LGR-IHR       10.86 5.72 7.81 4.46 5.69 4.83 6.19 6.83 5.63 4.86 7.69 5.36 8.74
LGR-MCN 9.20 6.62 6.91 16.19 7.00 10.16 7.76 7.00 7.44 9.53 10.12 7.05 7.05 8.28 7.29 9.69
LGR-JDA 11.75 8.15 10.07 23.99 8.96 12.50 9.74 9.49 9.19 10.09 12.05 8.75 8.71 12.59 9.80 13.35
LGR-BON 11.87 9.54     10.04 13.83 10.05 8.91 9.92 10.77 12.53 8.86 8.49 10.74 10.22 12.67
LGS-LMN 3.30 1.45 4.09 3.54 1.39 1.95 1.76 1.53 1.36 1.43 1.96 1.25 1.46 1.85 1.44 1.92
LGS-IHR       2.51 2.56 3.54 3.61 2.93 3.30 2.73 3.62 3.25 2.95 4.26 3.21 3.01
LGS-MCN 6.74 5.18 7.51 8.46 4.48 6.47 6.69 5.24 5.19 6.22 6.21 5.30 5.39 5.91 4.98 6.04
LGS-JDA 9.94 6.22 5.50 11.59 5.63 9.01 7.87 7.14 6.61 6.27 8.44 7.01 6.29 9.63 6.99 9.02
LGS-BON 9.89 7.55   9.50 7.02 9.76 7.00 6.96 7.71 6.41 8.63 6.80 6.67 8.66 7.92 7.05
LMN-IHR         1.21 1.57 1.55 1.32 1.33 1.54 1.97 2.01 1.43 2.29 1.44 2.04
LMN-MCN 3.42 3.69 3.64 4.20 2.74 3.90 4.69 3.73 3.94 4.42 4.31 3.69 3.63 5.25 3.21 5.26
LMN-JDA 5.90 5.34   9.06 4.57 7.49 5.78 5.86 5.65 5.40 6.77 5.14 5.06 9.20 5.76 6.58
LMN-BON 6.66 6.46 6.86 7.84 5.52 7.50 5.95 5.65 6.54 6.00 7.29 5.71 5.38 7.22 6.34 7.41
IHR-MCN       1.22 1.61 2.17 2.76 2.66 2.81 2.90 2.32 2.55 2.24   2.57 3.84
IHR-JDA         3.64 5.84 4.79 4.36 4.95 4.42 4.83 4.90 3.92 6.96 4.21 4.03
IHR-BON         4.86 7.36 4.20 4.86 5.32 4.86 5.43 4.88 3.95 5.25 5.95 3.77
MCN-JDA 2.92 2.62 3.50 3.64 2.42 3.94 3.21 2.66 2.86 2.71 3.48 3.32 2.35 4.11 3.34 3.86
MCN-BON 4.05 4.25 4.25 3.85 3.99 4.67 3.23 3.21 3.98 3.36 4.12 3.69 2.89 3.84 3.88 2.98
MCN-IHR                           -3.32    
JDA-BON 1.72 1.76   1.95 1.37 1.63 1.13 1.33 1.61 1.17 1.49 1.41 1.23 1.61 1.58 1.06
Standard errors by reach and year
Reach 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
LGR-LGS 0.27 0.05 0.37 0.28 0.19 0.56 0.22 0.06 0.06 0.42 0.07 0.02 0.11 0.07 0.06 0.44
LGR-LMN 0.54 0.13 2.43 0.89 0.20 0.31 0.25 0.08 0.22 0.06 0.09 0.06 0.11 0.16 0.15 0.76
LGR-IHR       NA 0.63 0.54 0.53 0.29 0.19 0.10 0.16 0.21 0.19 1.43 0.16 1.62
LGR-MCN 0.53 0.27 0.31 1.63 0.49 0.69 0.59 0.13 0.16 0.28 0.17 0.16 0.28 0.32 0.15 0.97
LGR-JDA 0.72 0.29 0.69 4.38 0.51 0.47 0.66 0.35 0.34 0.36 0.32 0.21 0.34 0.87 0.27 1.27
LGR-BON 0.82 0.33     0.71 1.05 0.63 0.14 0.11 0.30 0.28 0.10 0.23 0.39 0.24 0.81
LGS-LMN 0.29 0.05 1.92 0.41 0.05 0.15 0.07 0.04 0.06 0.03 0.04 0.04 0.05 0.08 0.04 0.21
LGS-IHR       NA 0.15 0.20 0.29 0.11 0.16 0.08 0.08 0.12 0.19 0.83 0.12 0.36
LGS-MCN 0.68 0.25 2.46 0.89 0.17 0.40 0.44 0.11 0.15 0.29 0.09 0.18 0.28 0.24 0.12 0.55
LGS-JDA 0.99 0.18 NA 1.39 0.19 0.36 0.53 0.16 0.24 0.25 0.25 0.21 0.21 0.55 0.23 0.83
LGS-BON 0.66 0.19   NA 0.19 0.58 0.36 0.09 0.09 0.22 0.13 0.09 0.15 0.33 0.20 0.63
LMN-IHR         0.14 0.19 0.10 0.05 0.12 0.02 0.05 0.24 0.10 0.20 0.09 0.51
LMN-MCN 0.19 0.21 0.60 0.41 0.10 0.42 0.31 0.09 0.31 0.10 0.08 0.23 0.29 0.44 0.13 0.55
LMN-JDA 0.37 0.25   1.92 0.19 0.41 0.26 0.18 0.41 0.10 0.21 0.30 0.37 1.19 0.30 0.70
LMN-BON 0.27 0.22 1.17 NA 0.16 0.41 0.25 0.06 0.17 0.13 0.19 0.16 0.20 0.34 0.17 0.58
IHR-MCN       NA 0.12 0.21 0.42 0.12 0.33 0.15 0.07 0.16 0.15   0.17 0.96
IHR-JDA         0.19 0.57 0.64 0.18 1.10 0.16 0.22 0.37 0.34 0.77 0.39 0.57
IHR-BON         0.25 1.30 0.21 0.20 0.17 0.20 0.13 0.21 0.08 0.27 0.52 0.09
MCN-JDA 0.15 0.07 0.72 0.29 0.13 0.20 0.25 0.09 0.13 0.12 0.15 0.15 0.10 0.23 0.12 0.55
MCN-BON 0.29 0.17 NA 0.40 0.55 0.27 0.13 0.08 0.05 0.16 0.12 0.08 0.04 0.05 0.09 0.19
MCN-IHR                           0.52    
JDA-BON 0.07 0.06   0.74 0.08 0.09 0.03 0.03 0.05 0.03 0.04 0.02 0.06 0.06 0.05 0.03
Counts by reach and year
Reach 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
LGR-LGS 50 268 63 160 105 90 97 989 241 394 1393 1141 219 114 363 49
LGR-LMN 79 154 8 39 86 73 93 720 104 3049 922 415 237 52 166 47
LGR-IHR 0 0 0 1 25 24 21 147 58 666 357 91 68 11 94 8
LGR-MCN 36 112 4 27 30 75 27 304 197 474 514 316 143 52 170 27
LGR-JDA 20 43 3 5 27 80 33 104 45 365 236 182 81 29 49 23
LGR-BON 18 61 0 0 25 34 18 284 204 180 208 396 124 76 56 24
LGS-LMN 147 243 5 61 257 68 266 1083 126 862 1214 166 178 54 166 41
LGS-IHR 0 0 0 1 86 25 61 269 58 185 528 46 54 19 78 8
LGS-MCN 64 172 3 29 86 63 79 407 215 176 674 148 74 61 178 21
LGS-JDA 26 83 1 9 70 70 83 189 35 151 297 94 63 22 41 20
LGS-BON 37 116 0 1 56 18 51 363 214 59 270 189 100 90 42 15
LMN-IHR 0 0 0 0 75 18 63 192 26 1164 389 14 69 12 52 9
LMN-MCN 83 86 6 20 84 50 88 366 91 952 496 47 129 41 92 26
LMN-JDA 34 27 0 6 59 57 86 147 17 777 220 23 64 18 22 32
LMN-BON 45 74 2 1 49 23 55 313 61 280 188 82 119 59 36 22
IHR-MCN 0 0 0 1 38 23 21 164 48 352 415 32 86 0 77 11
IHR-JDA 0 0 0 0 26 16 22 53 6 272 164 26 30 11 13 11
IHR-BON 0 0 0 0 17 4 17 132 34 94 155 41 80 21 12 9
MCN-JDA 21 44 4 8 30 76 30 110 52 235 228 62 73 62 66 25
MCN-BON 34 51 1 4 15 21 24 300 227 96 217 130 215 249 59 24
MCN-IHR 0 0 0 0 0 0 0 0 0 0 0 0 0 21 0 0
JDA-BON 10 36 0 2 17 35 24 94 44 75 159 80 83 189 37 33

Last Update: Mon Oct 23 18:59:01 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.