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Upper Willamette River Chinook 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 2017
LEA-SUJ 36.37
Standard errors by reach and year
Reach 2017
LEA-SUJ 4.67
Counts by reach and year
Reach 2017
LEA-SUJ 4

Last Update: Mon Oct 16 18:59:02 2017

Data Courtesy of Pacific States Marine Fisheries Commission

The Upper Willamette River Chinook ESU includes naturally spawned spring-run Chinook salmon originating from the Clackamas River and from the Willamette River and its tributaries above Willamette Falls. Also, spring-run Chinook salmon from six artificial propagation programs: McKenzie River Hatchery Program (Oregon Department of Fish and Wildlife (ODFW) Stock #23), Marion Forks Hatchery/North Fork Santiam River Program (ODFW Stock #21), South Santiam Hatchery Program (ODFW Stock #24) in the South Fork Santiam River and Mollala River, Willamette Hatchery Program (ODFW Stock #22), and Clackamas Hatchery Program (ODFW Stock #19). Definition implemented by Columbia River DART: March 2015.