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 17)
Total Number of Fish Observed1051
Percent of Total Run Analyzed [Number Observed]99.61 % [1047]1
Tailrace TDG Percent Exposure Index118.41 %
Percent of Fish Exposed [Number Exposed]22.2 % [233]
Number of Days Fish Exposed3
Middle 80% of Run Period (Apr 26 - May 16)
Number of Fish Observed876
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [876]
Tailrace TDG Percent Exposure Index118.23 %
Percent of Fish Exposed [Number Exposed]17.4 % [153]
Number of Days Fish Exposed2
Middle 50% of Run Period (Apr 29 - May 13)
Number of Fish Observed576
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [576]
Tailrace TDG Percent Exposure Index117.38 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunFeb 22
5% of Run passedApr 23
10% of Run passedApr 26
50% of Run passedMay 5
90% of Run passedMay 16
95% of Run passedMay 17
Last Day of RunMay 17
Date(s) When Tailrace TDG Percent Crosses 120 %
May 15

1. Total Run Analyzed [1047] is less than total observed during the period [1051]. Only fish observed on days with River Parameter data are analyzed.