Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2024
ProjectBonneville
River ParameterTemperature Tailrace
Critical Temperature Tailrace Value15 C
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Feb 22 - Jun 29)
Total Number of Fish Observed2047
Percent of Total Run Analyzed [Number Observed]99.8 % [2043]1
Temperature Tailrace Exposure Index13.4 C
Percent of Fish Exposed [Number Exposed]5.8 % [119]
Number of Days Fish Exposed23
Middle 80% of Run Period (Apr 28 - May 26)
Number of Fish Observed1681
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [1681]
Temperature Tailrace Exposure Index13.36 C
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (May 4 - May 21)
Number of Fish Observed1080
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [1080]
Temperature Tailrace Exposure Index13.61 C
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunFeb 22
5% of Run passedApr 25
10% of Run passedApr 28
50% of Run passedMay 16
90% of Run passedMay 26
95% of Run passedJun 6
Last Day of RunJun 29
Date(s) When Temperature Tailrace Crosses 15 C
Jun 1, Jun 3, Jun 6

1. Total Run Analyzed [2043] is less than total observed during the period [2047]. Only fish observed on days with River Parameter data are analyzed.