Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2017
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 31 - Oct 28)
Total Number of Fish Observed2226
Percent of Total Run Analyzed [Number Observed]99.68 % [2219]1
Tailrace TDG Percent Exposure Index122.22 %
Percent of Fish Exposed [Number Exposed]95.4 % [2118]
Number of Days Fish Exposed115
Middle 80% of Run Period (Apr 27 - Jul 8)
Number of Fish Observed1800
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [1800]
Tailrace TDG Percent Exposure Index122.86 %
Percent of Fish Exposed [Number Exposed]94.8 % [1708]
Number of Days Fish Exposed66
Middle 50% of Run Period (May 2 - May 29)
Number of Fish Observed1170
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [1170]
Tailrace TDG Percent Exposure Index124.27 %
Percent of Fish Exposed [Number Exposed]100 % [1170]
Number of Days Fish Exposed28
Run Dates
First Day of RunMar 31
5% of Run passedApr 24
10% of Run passedApr 27
50% of Run passedMay 9
90% of Run passedJul 8
95% of Run passedJul 14
Last Day of RunOct 28
Date(s) When Tailrace TDG Percent Crosses 115 %
Jun 4, Jun 9, Jul 8, Jul 9, Aug 14, Aug 15, Aug 18, Aug 21, Aug 23, Aug 28, Sep 1

1. Total Run Analyzed [2219] is less than total observed during the period [2226]. Only fish observed on days with River Parameter data are analyzed.