Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Chinook Query Parameters
Year2024
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 17 - Jun 15)
Total Number of Fish Observed111205
Percent of Total Run Analyzed [Number Observed]99.95 % [111153]1
Tailrace TDG Percent Exposure Index118.77 %
Percent of Fish Exposed [Number Exposed]22.1 % [24625]
Number of Days Fish Exposed21
Middle 80% of Run Period (Apr 26 - Jun 9)
Number of Fish Observed90043
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [90043]
Tailrace TDG Percent Exposure Index118.65 %
Percent of Fish Exposed [Number Exposed]19.8 % [17877]
Number of Days Fish Exposed17
Middle 50% of Run Period (May 3 - May 22)
Number of Fish Observed56750
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [56750]
Tailrace TDG Percent Exposure Index118.53 %
Percent of Fish Exposed [Number Exposed]14.4 % [8180]
Number of Days Fish Exposed7
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 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 [111153] is less than total observed during the period [111205]. Only fish observed on days with River Parameter data are analyzed.