Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Chinook Query Parameters
Year2024
ProjectBonneville
River ParameterTemperature Tailrace
Critical Temperature Tailrace Value15 C
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates3/15 - 6/15
Total Run Period (Mar 17 - Jun 15)
Total Number of Fish Observed111205
Percent of Total Run Analyzed [Number Observed]99.95 % [111153]1
Temperature Tailrace Exposure Index13.09 C
Percent of Fish Exposed [Number Exposed]15.4 % [17222]
Number of Days Fish Exposed12
Middle 80% of Run Period (Apr 26 - Jun 9)
Number of Fish Observed90043
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [90043]
Temperature Tailrace Exposure Index12.94 C
Percent of Fish Exposed [Number Exposed]7.2 % [6485]
Number of Days Fish Exposed6
Middle 50% of Run Period (May 3 - May 22)
Number of Fish Observed56750
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [56750]
Temperature Tailrace Exposure Index12.69 C
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 17
5% of Run passedApr 22
10% of Run passedApr 26
50% of Run passedMay 9
90% of Run passedJun 9
95% of Run passedJun 12
Last Day of RunJun 15
Date(s) When Temperature Tailrace Crosses 15 C
Jun 1, Jun 3, Jun 6

1. Total Run Analyzed [111153] is less than total observed during the period [111205]. Only fish observed on days with River Parameter data are analyzed.