Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2021
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 28)
Total Number of Fish Observed71967
Percent of Total Run Analyzed [Number Observed]55.11 % [39662]1
Temperature Tailrace Exposure Index21.23 C
Percent of Fish Exposed [Number Exposed]97.8 % [38829]
Number of Days Fish Exposed93
Middle 80% of Run Period (Jul 14 - Sep 28)
Number of Fish Observed58491
Percent of Middle 80% of Run Analyzed [Number Observed]57.31 % [33522]
Temperature Tailrace Exposure Index21.63 C
Percent of Fish Exposed [Number Exposed]100 % [33522]
Number of Days Fish Exposed49
Middle 50% of Run Period (Aug 8 - Sep 13)
Number of Fish Observed36262
Percent of Middle 50% of Run Analyzed [Number Observed]63.18 % [22912]
Temperature Tailrace Exposure Index21.49 C
Percent of Fish Exposed [Number Exposed]100 % [22912]
Number of Days Fish Exposed25
Run Dates
First Day of RunJan 1
5% of Run passedJul 5
10% of Run passedJul 14
50% of Run passedAug 29
90% of Run passedSep 28
95% of Run passedOct 9
Last Day of RunDec 28
Date(s) When Temperature Tailrace Crosses 15 C
May 31

1. Total Run Analyzed [39662] is less than total observed during the period [71967]. Only fish observed on days with River Parameter data are analyzed.