Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2022
ProjectBonneville
River ParameterTemperature Tailrace
Critical Temperature Tailrace Value15 C
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Jan 1 - Dec 31)
Total Number of Fish Observed126367
Percent of Total Run Analyzed [Number Observed]65.95 % [83349]1
Temperature Tailrace Exposure Index20.34 C
Percent of Fish Exposed [Number Exposed]97.2 % [81033]
Number of Days Fish Exposed69
Middle 80% of Run Period (Jul 6 - Sep 20)
Number of Fish Observed102871
Percent of Middle 80% of Run Analyzed [Number Observed]72.82 % [74919]
Temperature Tailrace Exposure Index20.88 C
Percent of Fish Exposed [Number Exposed]100 % [74919]
Number of Days Fish Exposed58
Middle 50% of Run Period (Jul 21 - Sep 9)
Number of Fish Observed65299
Percent of Middle 50% of Run Analyzed [Number Observed]86.15 % [56260]
Temperature Tailrace Exposure Index21.59 C
Percent of Fish Exposed [Number Exposed]100 % [56260]
Number of Days Fish Exposed43
Run Dates
First Day of RunJan 1
5% of Run passedJun 26
10% of Run passedJul 6
50% of Run passedAug 15
90% of Run passedSep 20
95% of Run passedSep 28
Last Day of RunDec 31
Date(s) When Temperature Tailrace Crosses 15 C
Jun 25

1. Total Run Analyzed [83349] is less than total observed during the period [126367]. Only fish observed on days with River Parameter data are analyzed.