Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2016
ProjectBonneville
River ParameterTailrace TDG Percent
Critical Tailrace TDG Percent Value115 %
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Mar 12 - Jul 5)
Total Number of Fish Observed4929
Percent of Total Run Analyzed [Number Observed]99.95 % [4927]1
Tailrace TDG Percent Exposure Index118.59 %
Percent of Fish Exposed [Number Exposed]99 % [4879]
Number of Days Fish Exposed80
Middle 80% of Run Period (Apr 23 - May 25)
Number of Fish Observed4065
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [4065]
Tailrace TDG Percent Exposure Index118.75 %
Percent of Fish Exposed [Number Exposed]100 % [4065]
Number of Days Fish Exposed33
Middle 50% of Run Period (Apr 30 - May 19)
Number of Fish Observed2725
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [2725]
Tailrace TDG Percent Exposure Index118.48 %
Percent of Fish Exposed [Number Exposed]100 % [2725]
Number of Days Fish Exposed20
Run Dates
First Day of RunMar 12
5% of Run passedApr 20
10% of Run passedApr 23
50% of Run passedMay 9
90% of Run passedMay 25
95% of Run passedMay 29
Last Day of RunJul 5
Date(s) When Tailrace TDG Percent Crosses 115 %
Apr 10, Jul 4, Jul 5

1. Total Run Analyzed [4927] is less than total observed during the period [4929]. Only fish observed on days with River Parameter data are analyzed.