Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead 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 29 - Jul 21)
Total Number of Fish Observed2804
Percent of Total Run Analyzed [Number Observed]93.08 % [2610]1
Tailrace TDG Percent Exposure Index124.33 %
Percent of Fish Exposed [Number Exposed]100 % [2610]
Number of Days Fish Exposed78
Middle 80% of Run Period (Apr 29 - Jun 3)
Number of Fish Observed2289
Percent of Middle 80% of Run Analyzed [Number Observed]95.71 % [2191]
Tailrace TDG Percent Exposure Index124.69 %
Percent of Fish Exposed [Number Exposed]100 % [2191]
Number of Days Fish Exposed34
Middle 50% of Run Period (May 5 - May 27)
Number of Fish Observed1509
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [1509]
Tailrace TDG Percent Exposure Index125.04 %
Percent of Fish Exposed [Number Exposed]100 % [1509]
Number of Days Fish Exposed23
Run Dates
First Day of RunMar 29
5% of Run passedApr 24
10% of Run passedApr 29
50% of Run passedMay 16
90% of Run passedJun 3
95% of Run passedJun 10
Last Day of RunJul 21
Date(s) When Tailrace TDG Percent Crosses 115 %
Jul 8, Jul 9, Jul 12, Jul 14, Jul 16, Jul 18, Jul 20, Jul 21

1. Total Run Analyzed [2610] is less than total observed during the period [2804]. Only fish observed on days with River Parameter data are analyzed.