Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook 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 (Feb 22 - May 1)
Total Number of Fish Observed401
Percent of Total Run Analyzed [Number Observed]99 % [397]1
Tailrace TDG Percent Exposure Index117.75 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 80% of Run Period (Apr 22 - May 1)
Number of Fish Observed365
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [365]
Tailrace TDG Percent Exposure Index117.78 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Apr 26 - Apr 30)
Number of Fish Observed244
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [244]
Tailrace TDG Percent Exposure Index117.9 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunFeb 22
5% of Run passedApr 20
10% of Run passedApr 22
50% of Run passedApr 28
90% of Run passedMay 1
95% of Run passedMay 1
Last Day of RunMay 1

1. Total Run Analyzed [397] is less than total observed during the period [401]. Only fish observed on days with River Parameter data are analyzed.