Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2018
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 Observed102920
Percent of Total Run Analyzed [Number Observed]80.22 % [82564]1
Tailrace TDG Percent Exposure Index114.87 %
Percent of Fish Exposed [Number Exposed]0.7 % [615]
Number of Days Fish Exposed18
Middle 80% of Run Period (Jul 6 - Sep 26)
Number of Fish Observed83107
Percent of Middle 80% of Run Analyzed [Number Observed]95.8 % [79619]
Tailrace TDG Percent Exposure Index114.85 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Jul 25 - Sep 11)
Number of Fish Observed53315
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [53315]
Tailrace TDG Percent Exposure Index115.02 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunJan 1
5% of Run passedJun 18
10% of Run passedJul 6
50% of Run passedAug 17
90% of Run passedSep 26
95% of Run passedOct 6
Last Day of RunDec 31
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 10, Apr 12, Apr 15, Apr 16, Apr 29, Jul 11

1. Total Run Analyzed [82564] is less than total observed during the period [102920]. Only fish observed on days with River Parameter data are analyzed.