Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2022
ProjectLower Granite
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 23 - Nov 24)
Total Number of Fish Observed12496
Percent of Total Run Analyzed [Number Observed]99.4 % [12422]1
Tailrace TDG Percent Exposure Index116.49 %
Percent of Fish Exposed [Number Exposed]3.1 % [391]
Number of Days Fish Exposed4
Middle 80% of Run Period (Apr 26 - May 30)
Number of Fish Observed10216
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [10216]
Tailrace TDG Percent Exposure Index116.74 %
Percent of Fish Exposed [Number Exposed]3.5 % [358]
Number of Days Fish Exposed2
Middle 50% of Run Period (Apr 30 - May 18)
Number of Fish Observed6636
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [6636]
Tailrace TDG Percent Exposure Index116.61 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 23
5% of Run passedApr 20
10% of Run passedApr 26
50% of Run passedMay 7
90% of Run passedMay 30
95% of Run passedJun 6
Last Day of RunNov 24
Date(s) When Tailrace TDG Percent Crosses 120 %
May 28, May 30, Jun 11, Jun 14, Nov 15, Nov 18

1. Total Run Analyzed [12422] is less than total observed during the period [12496]. Only fish observed on days with River Parameter data are analyzed.