Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult 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 (Jan 1 - Dec 31)
Total Number of Fish Observed117878
Percent of Total Run Analyzed [Number Observed]88.19 % [103962]1
Tailrace TDG Percent Exposure Index113.09 %
Percent of Fish Exposed [Number Exposed]27.2 % [28310]
Number of Days Fish Exposed140
Middle 80% of Run Period (Jul 21 - Sep 23)
Number of Fish Observed94723
Percent of Middle 80% of Run Analyzed [Number Observed]98.07 % [92898]
Tailrace TDG Percent Exposure Index112.51 %
Percent of Fish Exposed [Number Exposed]21.6 % [20153]
Number of Days Fish Exposed19
Middle 50% of Run Period (Aug 5 - Sep 12)
Number of Fish Observed60193
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [60193]
Tailrace TDG Percent Exposure Index112.78 %
Percent of Fish Exposed [Number Exposed]11.6 % [7038]
Number of Days Fish Exposed8
Run Dates
First Day of RunJan 1
5% of Run passedJul 6
10% of Run passedJul 21
50% of Run passedAug 24
90% of Run passedSep 23
95% of Run passedOct 1
Last Day of RunDec 31
Date(s) When Tailrace TDG Percent Crosses 115 %
Mar 9, 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 [103962] is less than total observed during the period [117878]. Only fish observed on days with River Parameter data are analyzed.