Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Chinook Query Parameters
Year2021
ProjectBonneville
River ParameterTailrace TDG Percent
Critical Tailrace TDG Percent Value120 %
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
Tailrace TDG Percent Exposure Index118.91 %
Percent of Fish Exposed [Number Exposed]7.2 % [6302]
Number of Days Fish Exposed5
Middle 80% of Run Period (Apr 29 - Jun 10)
Number of Fish Observed70683
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [70683]
Tailrace TDG Percent Exposure Index119.02 %
Percent of Fish Exposed [Number Exposed]8.9 % [6302]
Number of Days Fish Exposed5
Middle 50% of Run Period (May 2 - May 30)
Number of Fish Observed46076
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [46076]
Tailrace TDG Percent Exposure Index118.93 %
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 Tailrace TDG Percent Crosses 120 %
Jun 4, Jun 9

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.