Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Chinook Query Parameters
Year2021
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 15 - Jun 15)
Total Number of Fish Observed87232
Percent of Total Run Analyzed [Number Observed]99.99 % [87231]1
Temperature Tailrace Exposure Index13.77 C
Percent of Fish Exposed [Number Exposed]24.6 % [21467]
Number of Days Fish Exposed16
Middle 80% of Run Period (Apr 29 - Jun 10)
Number of Fish Observed70683
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [70683]
Temperature Tailrace Exposure Index13.83 C
Percent of Fish Exposed [Number Exposed]18.5 % [13097]
Number of Days Fish Exposed11
Middle 50% of Run Period (May 2 - May 30)
Number of Fish Observed46076
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [46076]
Temperature Tailrace Exposure Index13.64 C
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 15
5% of Run passedApr 26
10% of Run passedApr 29
50% of Run passedMay 12
90% of Run passedJun 10
95% of Run passedJun 13
Last Day of RunJun 15
Date(s) When Temperature Tailrace Crosses 15 C
May 31

1. Total Run Analyzed [87231] is less than total observed during the period [87232]. Only fish observed on days with River Parameter data are analyzed.