Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2024
ProjectBonneville
River ParameterTailrace TDG Percent
Critical Tailrace TDG Percent Value120 %
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Jan 1 - Dec 31)
Total Number of Fish Observed181907
Percent of Total Run Analyzed [Number Observed]93.36 % [169832]1
Tailrace TDG Percent Exposure Index112.69 %
Percent of Fish Exposed [Number Exposed]0.9 % [1616]
Number of Days Fish Exposed21
Middle 80% of Run Period (Jul 9 - Sep 21)
Number of Fish Observed147152
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [147152]
Tailrace TDG Percent Exposure Index112.3 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Jul 27 - Sep 8)
Number of Fish Observed94804
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [94804]
Tailrace TDG Percent Exposure Index111.91 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunJan 1
5% of Run passedJun 27
10% of Run passedJul 9
50% of Run passedAug 21
90% of Run passedSep 21
95% of Run passedSep 27
Last Day of RunDec 31
Date(s) When Tailrace TDG Percent Crosses 120 %
May 15, May 22, May 23, May 25, May 31, Jun 2, Jun 4, Jun 14

1. Total Run Analyzed [169832] is less than total observed during the period [181907]. Only fish observed on days with River Parameter data are analyzed.