Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2019
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 3 - Jul 14)
Total Number of Fish Observed4792
Percent of Total Run Analyzed [Number Observed]99.97 % [4791]1
Tailrace TDG Percent Exposure Index119.41 %
Percent of Fish Exposed [Number Exposed]10.3 % [497]
Number of Days Fish Exposed10
Middle 80% of Run Period (Apr 30 - May 30)
Number of Fish Observed3903
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [3903]
Tailrace TDG Percent Exposure Index119.45 %
Percent of Fish Exposed [Number Exposed]6.9 % [273]
Number of Days Fish Exposed3
Middle 50% of Run Period (May 5 - May 24)
Number of Fish Observed2668
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [2668]
Tailrace TDG Percent Exposure Index119.62 %
Percent of Fish Exposed [Number Exposed]10.2 % [273]
Number of Days Fish Exposed3
Run Dates
First Day of RunMar 3
5% of Run passedApr 25
10% of Run passedApr 30
50% of Run passedMay 15
90% of Run passedMay 30
95% of Run passedJun 5
Last Day of RunJul 14
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 10, Apr 13, Apr 24, Apr 26, May 15, May 17, May 19, May 20, May 31, Jun 2, Jun 3, Jun 5

1. Total Run Analyzed [4791] is less than total observed during the period [4792]. Only fish observed on days with River Parameter data are analyzed.