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Upper Columbia River Chinook Spring 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.


Harmonic mean travel times by reach and year
Reach 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
WEL-WEH                                       0.00 0.00
WEL-RRH                 -12.42           11.38 2.78 3.90 16.67 2.91 6.82  
WEL-RIA   -4.81                   -4.10               -17.46  
WEL-PRD   -8.09                   -10.94               -22.23  
WEL-MCN     27.11                   79.78     9.55   19.40   43.78  
WEL-JDA               94.64         85.51     22.74 15.82        
WEL-BON               96.39               27.26 27.31     22.44  
WEH-RRH                                       6.82  
WEH-RIA                                       -17.46  
WEH-PRD                                       -22.23  
WEH-MCN                                       43.78  
WEH-BON                                       22.44  
TUF-BON                                 37.19       45.74
TUF-JDA                               37.45 32.00   129.57    
TUF-MCN                               17.09 29.96 37.71   23.86  
RRH-WEL                       -4.94                 -5.40
RRH-WEH                                         -5.40
RRH-RIA                 1.87   -8.09 5.05 38.78 1.17 0.56 1.22 0.93   3.11 1.91 0.87
RRH-MCN 11.51               10.82 12.30 11.38 9.29 11.52 11.84 9.48 9.70 10.67 11.12 10.59 9.88 9.97
RRH-JDA 14.64               13.98 15.33 15.53 12.69 15.40 15.22 12.64 12.39 12.50 13.95 12.55 13.56 12.16
RRH-BON 15.94               14.59 17.08 15.77 12.90 13.66 16.08 12.80 12.18 12.76 14.28 13.88 13.63 14.44
RRH-PRD                       40.19 32.10 44.69 46.25         -28.81  
RRH-TDA                         66.59             58.76  
RIA-BON       30.59   14.72     21.49     28.00   16.61 17.73       36.23 20.00 10.55
RIA-JDA       28.41   25.93 10.38 16.13 20.08 20.27     12.91   18.19 17.07 12.92   23.96 18.41  
RIA-PRD   -5.30 -5.59                 -6.85               -4.44  
RIA-MCN     11.26 20.32   18.44 8.21   16.11 18.12   10.99     9.29   19.96     9.89  
PRD-BON               78.91                          
PRD-MCN                         32.56                
MCN-JDA 3.82 3.45 3.39 4.07 4.08 3.65 3.37 3.47 4.08 3.33 3.64 3.42 3.23 3.95 3.11 3.05 3.23 3.11 2.66 3.84 2.57
MCN-BON 5.61 5.14 4.86 5.64 5.57 4.86 5.01 4.91 5.45 4.91 4.75 4.35 4.25 4.77 3.88 3.82 3.90 4.43 4.31 4.67 4.58
JDA-BON 2.34 2.00 1.93 2.16 1.85 1.85 1.65 1.72 1.89 1.58 1.82 1.64 1.61 1.80 1.61 1.45 1.41 1.66 1.72 1.86 1.73
JDA-TDA                                       -3.30  
TDA-BON                         -2.98             -2.74  
Standard errors by reach and year
Reach 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
WEL-WEH                                       nan nan
WEL-RRH                 NA           NA 0.41 1.24 NA 0.30 0.96  
WEL-RIA   0.70                   NA               NA  
WEL-PRD   0.54                   NA               NA  
WEL-MCN     NA                   NA     4.52   NA   NA  
WEL-JDA               NA         NA     1.42 7.08        
WEL-BON               NA               2.51 NA     3.35  
WEH-RRH                                       0.96  
WEH-RIA                                       NA  
WEH-PRD                                       NA  
WEH-MCN                                       NA  
WEH-BON                                       3.35  
TUF-BON                                 4.28       NA
TUF-JDA                               NA NA   NA    
TUF-MCN                               9.92 6.04 NA   NA  
RRH-WEL                       5.41                 0.88
RRH-WEH                                         0.88
RRH-RIA                 0.35   NA 6.96 NA 0.22 0.17 0.53 NA   6.37 0.91 0.09
RRH-MCN 0.16               0.13 0.21 0.24 0.13 0.26 0.13 0.08 0.20 0.20 0.21 0.18 0.19 0.54
RRH-JDA 0.32               0.29 0.23 0.37 0.23 0.38 0.22 0.16 0.17 0.20 0.19 0.16 0.37 0.34
RRH-BON 0.44               0.13 0.45 0.36 0.18 0.30 0.12 0.11 0.18 0.21 0.13 0.13 0.09 0.17
RRH-PRD                       NA NA NA NA         43.89  
RRH-TDA                         NA             1.51  
RIA-BON       NA   0.61     3.00     11.71   1.53 5.98       NA 3.26 NA
RIA-JDA       NA   4.81 4.23 NA 4.64 NA     4.06   2.43 NA 2.48   12.97 NA  
RIA-PRD   1.06 0.47                 NA               0.31  
RIA-MCN     NA 1.14   5.36 2.43   4.07 NA   NA     2.25   7.63     NA  
PRD-BON               NA                          
PRD-MCN                         NA                
MCN-JDA 0.05 0.03 0.04 0.10 0.08 0.03 0.04 0.07 0.09 0.05 0.05 0.05 0.04 0.09 0.03 0.04 0.06 0.08 0.05 0.38 0.22
MCN-BON 0.09 0.05 0.06 0.16 0.13 0.05 0.11 0.07 0.06 0.12 0.06 0.06 0.07 0.05 0.02 0.05 0.08 0.07 0.09 0.10 0.23
JDA-BON 0.04 0.01 0.02 0.06 0.05 0.02 0.02 0.03 0.02 0.04 0.02 0.02 0.02 0.02 0.01 0.01 0.02 0.02 0.02 0.09 0.05
JDA-TDA                                       0.52  
TDA-BON                         NA             0.27  
Counts by reach and year
Reach 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
WEL-WEH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 79 41
WEL-RRH 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 17 5 1 7 30 0
WEL-RIA 0 5 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0
WEL-PRD 0 4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0
WEL-MCN 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 2 0 1 0 1 0
WEL-JDA 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 9 3 0 0 0 0
WEL-BON 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 4 1 0 0 5 0
WEH-RRH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 30 0
WEH-RIA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
WEH-PRD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
WEH-MCN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
WEH-BON 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0
TUF-BON 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 1
TUF-JDA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0
TUF-MCN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 1 0 1 0
RRH-WEL 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 12
RRH-WEH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
RRH-RIA 0 0 0 0 0 0 0 0 5 0 1 3 1 11 3 2 1 0 2 7 2
RRH-MCN 450 0 0 0 0 0 0 0 970 575 496 957 451 637 1343 503 458 391 455 333 78
RRH-JDA 183 0 0 0 0 0 0 0 339 773 316 459 312 233 467 877 451 548 798 163 170
RRH-BON 108 0 0 0 0 0 0 0 1104 135 266 495 300 953 826 579 461 1143 1005 1580 673
RRH-PRD 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 3 0
RRH-TDA 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 4 0
RIA-BON 0 0 0 1 0 2 0 0 6 0 0 2 0 4 3 0 0 0 1 4 1
RIA-JDA 0 0 0 1 0 5 3 1 4 1 0 0 2 0 3 1 3 0 2 1 0
RIA-PRD 0 5 2 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 3 0
RIA-MCN 0 0 1 2 0 4 2 0 9 1 0 1 0 0 5 0 3 0 0 1 0
PRD-BON 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
PRD-MCN 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
MCN-JDA 394 1307 349 161 371 1332 786 391 347 585 747 540 546 159 668 669 304 133 124 18 12
MCN-BON 204 849 255 86 184 406 222 418 796 125 464 382 241 378 871 305 179 191 98 98 19
JDA-BON 224 957 234 57 131 452 266 218 301 103 410 235 240 191 434 537 201 263 252 56 55
JDA-TDA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0
TDA-BON 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 7 0

Last Update: Thu Sep 29 18:59:01 2022

Data Courtesy of Pacific States Marine Fisheries Commission

The Upper Columbia River Spring Chinook ESU includes naturally spawned spring-run Chinook salmon originating from Columbia River tributaries upstream of the Rock Island Dam and downstream of Chief Joseph Dam (excluding the Okanogan River subbasin). Also, spring-run Chinook salmon from six artificial propagation programs: Twisp River Program, Chewuch River Program, Methow Program, Winthrop National Fish Hatchery Program, Chiwawa River Program, and White River Program. Definition implemented by Columbia River DART: March 2010.