Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult 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 (Jan 1 - Dec 31)
Total Number of Fish Observed77320
Percent of Total Run Analyzed [Number Observed]83.27 % [64386]1
Tailrace TDG Percent Exposure Index115.27 %
Percent of Fish Exposed [Number Exposed]0.2 % [177]
Number of Days Fish Exposed12
Middle 80% of Run Period (Jul 9 - Sep 28)
Number of Fish Observed61902
Percent of Middle 80% of Run Analyzed [Number Observed]92.03 % [56969]
Tailrace TDG Percent Exposure Index115.16 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Jul 24 - Sep 3)
Number of Fish Observed39263
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [39263]
Tailrace TDG Percent Exposure Index115.36 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunJan 1
5% of Run passedJun 28
10% of Run passedJul 9
50% of Run passedAug 11
90% of Run passedSep 28
95% of Run passedOct 11
Last Day of RunDec 31
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 [64386] is less than total observed during the period [77320]. Only fish observed on days with River Parameter data are analyzed.