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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.


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
WEL-RRH                 -12.42     2.36     11.38 6.48
WEL-MCN     27.11                   79.78     12.31
WEL-JDA               94.64         85.51     23.52
WEL-BON               96.39               28.02
TUF-MCN             41.40 84.85 41.46 82.80 54.93 36.48 46.29 62.63 111.05 25.77
TUF-JDA             37.54 124.29 47.25 49.70 61.22 40.41 44.68 54.20 121.80 37.45
TUF-BON                 66.26         42.83 123.79  
RRH-RIA                 2.25   -5.62 -2.43 38.78 1.72 12.75 1.50
RRH-PRD                     -10.59   32.10 44.69 42.59  
RRH-MCN 12.77               13.03 14.50 14.83 11.82 14.92 12.99 10.60 12.09
RRH-JDA 15.95               17.12 17.79 18.83 15.18 18.48 16.00 13.67 14.84
RRH-BON 17.33               16.52 18.53 18.76 14.59 16.10 17.07 13.92 14.11
RIA-BON       30.59   14.74     24.20     33.94   17.08 21.40  
RIA-MCN     11.26 20.38   25.57 9.00   26.80 18.12   10.99     11.78  
RIA-JDA       28.41   30.64 16.42 16.13 24.46 20.27     14.33   18.86 17.07
RIA-PRD     -5.61               -7.45       -7.22  
PRD-MCN                         32.56      
PRD-BON               78.91                
MCN-JDA 4.06 4.01 3.62 4.53 4.99 4.00 3.94 4.39 5.01 3.92 4.56 3.94 3.59 4.30 3.41 3.51
MCN-BON 5.88 5.62 5.06 6.15 6.23 5.14 5.69 5.59 6.10 5.24 5.26 4.82 4.59 5.03 4.05 4.10
JDA-BON 2.48 2.11 1.97 2.24 2.05 1.83 1.93 1.88 1.99 1.72 1.96 1.71 1.72 1.90 1.77 1.67
Standard errors by reach and year
Reach 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
WEL-RRH                 NA     NA     NA 2.08
WEL-MCN     NA                   NA     5.83
WEL-JDA               NA         NA     1.62
WEL-BON               NA               2.77
TUF-MCN             4.86 18.80 3.76 22.85 12.15 8.33 10.82 0.59 7.66 14.96
TUF-JDA             5.41 NA 11.46 7.38 17.11 19.06 9.34 13.14 NA NA
TUF-BON                 11.29         0.82 NA  
RRH-RIA                 0.54   2.47 3.79 NA 0.40 12.10 0.65
RRH-PRD                     NA   NA NA NA  
RRH-MCN 0.22               0.23 0.27 0.39 0.22 0.41 0.20 0.12 0.26
RRH-JDA 0.35               0.52 0.24 0.49 0.35 0.47 0.25 0.20 0.24
RRH-BON 0.55               0.22 0.48 0.55 0.28 0.44 0.15 0.17 0.26
RIA-BON       NA   0.62     4.03     14.19   1.72 5.46  
RIA-MCN     NA 1.14   9.29 2.66   6.25 NA   NA     2.76  
RIA-JDA       NA   6.97 8.07 NA 6.81 NA     4.51   2.52 NA
RIA-PRD     0.51               NA       NA  
PRD-MCN                         NA      
PRD-BON               NA                
MCN-JDA 0.06 0.06 0.06 0.13 0.15 0.04 0.08 0.16 0.16 0.09 0.12 0.08 0.06 0.11 0.05 0.07
MCN-BON 0.12 0.07 0.08 0.23 0.18 0.07 0.17 0.14 0.08 0.12 0.11 0.11 0.11 0.07 0.06 0.08
JDA-BON 0.05 0.02 0.02 0.06 0.07 0.10 0.12 0.08 0.03 0.06 0.03 0.03 0.04 0.07 0.10 0.11
Counts by reach and year
Reach 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
WEL-RRH 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 17
WEL-MCN 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 2
WEL-JDA 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 9
WEL-BON 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 4
TUF-MCN 0 0 0 0 0 0 12 6 12 3 4 5 3 2 2 2
TUF-JDA 0 0 0 0 0 0 6 1 3 5 3 2 4 2 1 1
TUF-BON 0 0 0 0 0 0 0 0 5 0 0 0 0 2 1 0
RRH-RIA 0 0 0 0 0 0 0 0 5 0 2 2 1 11 4 2
RRH-PRD 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 0
RRH-MCN 450 0 0 0 0 0 0 0 970 575 496 957 451 637 1245 495
RRH-JDA 183 0 0 0 0 0 0 0 339 773 316 459 311 233 440 867
RRH-BON 107 0 0 0 0 0 0 0 1100 132 265 495 299 953 779 574
RIA-BON 0 0 0 1 0 2 0 0 6 0 0 2 0 4 3 0
RIA-MCN 0 0 1 2 0 4 2 0 9 1 0 1 0 0 5 0
RIA-JDA 0 0 0 1 0 5 3 1 4 1 0 0 2 0 3 1
RIA-PRD 0 0 3 0 0 0 0 0 0 0 1 0 0 0 1 0
PRD-MCN 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
PRD-BON 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
MCN-JDA 389 1273 345 161 371 1331 785 391 347 584 747 540 543 159 645 643
MCN-BON 197 834 247 83 184 404 222 418 790 124 463 381 238 377 843 300
JDA-BON 211 935 215 55 129 445 262 214 287 99 399 233 231 184 416 526

Last Update: Fri Dec 15 18:59:02 2017

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.