Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer 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 (Mar 20 - May 1)
Total Number of Fish Observed253
Percent of Total Run Analyzed [Number Observed]98.02 % [248]1
Tailrace TDG Percent Exposure Index117.17 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 80% of Run Period (Apr 12 - Apr 30)
Number of Fish Observed204
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [204]
Tailrace TDG Percent Exposure Index118.12 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Apr 22 - Apr 29)
Number of Fish Observed136
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [136]
Tailrace TDG Percent Exposure Index118.19 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 20
5% of Run passedApr 8
10% of Run passedApr 12
50% of Run passedApr 27
90% of Run passedApr 30
95% of Run passedMay 1
Last Day of RunMay 1

1. Total Run Analyzed [248] is less than total observed during the period [253]. Only fish observed on days with River Parameter data are analyzed.