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 - Dec 20)
Total Number of Fish Observed2252
Percent of Total Run Analyzed [Number Observed]99.24 % [2235]1
Tailrace TDG Percent Exposure Index122.21 %
Percent of Fish Exposed [Number Exposed]95.3 % [2131]
Number of Days Fish Exposed115
Middle 80% of Run Period (Apr 27 - Jul 9)
Number of Fish Observed1856
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [1856]
Tailrace TDG Percent Exposure Index122.73 %
Percent of Fish Exposed [Number Exposed]94.8 % [1761]
Number of Days Fish Exposed67
Middle 50% of Run Period (May 2 - May 29)
Number of Fish Observed1178
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [1178]
Tailrace TDG Percent Exposure Index124.27 %
Percent of Fish Exposed [Number Exposed]100 % [1178]
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 9
95% of Run passedJul 15
Last Day of RunDec 20
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 [2235] is less than total observed during the period [2252]. Only fish observed on days with River Parameter data are analyzed.