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 Observed2319
Percent of Total Run Analyzed [Number Observed]94.6 % [2194]1
Tailrace TDG Percent Exposure Index122.57 %
Percent of Fish Exposed [Number Exposed]96 % [2108]
Number of Days Fish Exposed103
Middle 80% of Run Period (Apr 27 - Jul 8)
Number of Fish Observed1882
Percent of Middle 80% of Run Analyzed [Number Observed]94.15 % [1772]
Tailrace TDG Percent Exposure Index123.4 %
Percent of Fish Exposed [Number Exposed]98.8 % [1752]
Number of Days Fish Exposed64
Middle 50% of Run Period (May 2 - May 29)
Number of Fish Observed1231
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [1231]
Tailrace TDG Percent Exposure Index124.27 %
Percent of Fish Exposed [Number Exposed]100 % [1231]
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 RunDec 20
Date(s) When Tailrace TDG Percent Crosses 115 %
Jul 8, Jul 9, Jul 12, Jul 14, Jul 16, Jul 18, Jul 20, Jul 21, Jul 24, Jul 25, Jul 28, Jul 30, Aug 1, Aug 2, Aug 5, Aug 7, Aug 9, Aug 10, Aug 13, Aug 15, Aug 17, Aug 29, Aug 30

1. Total Run Analyzed [2194] is less than total observed during the period [2319]. Only fish observed on days with River Parameter data are analyzed.