Historical Harmonic Mean Travel Time Estimates
Adult Radiotelemetry Bonneville to Lower Granite Sockeye

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. Reach travel time is based on the last record at the top-of-ladder site (LT) at the first project and the first approach record (A1**) at the second project. 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 record at the top-of-ladder site (LT) for each Radio Telemetry 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.

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Harmonic mean travel times by reach and year:

  Reach   1997

BON-TDA   1.72
BON-JDA   3.12
BON-MCN   5.63
BON-IHR  23.77
TDA-JDA   1.22
TDA-MCN   3.74
TDA-IHR  21.89
JDA-MCN   2.30
JDA-IHR  19.23
MCN-IHR  13.80

Standard errors by reach and year:

  Reach   1997

BON-TDA   0.02
BON-JDA   0.05
BON-MCN   0.07
BON-IHR     NA
TDA-JDA   0.02
TDA-MCN   0.05
TDA-IHR     NA
JDA-MCN   0.03
JDA-IHR     NA
MCN-IHR     NA

Counts by reach and year:

  Reach   1997

BON-TDA    494
BON-JDA    468
BON-MCN    435
BON-IHR      1
TDA-JDA    464
TDA-MCN    431
TDA-IHR      1
JDA-MCN    427
JDA-IHR      1
MCN-IHR      1