Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2021
ProjectLittle Goose
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 (Mar 1 - Dec 31)
Total Number of Fish Observed41646
Percent of Total Run Analyzed [Number Observed]96.26 % [40092]1
Tailrace TDG Percent Exposure Index98.42 %
Percent of Fish Exposed [Number Exposed]0 % [31]
Number of Days Fish Exposed7
Middle 80% of Run Period (Sep 6 - Oct 25)
Number of Fish Observed33539
Percent of Middle 80% of Run Analyzed [Number Observed]95.36 % [31985]
Tailrace TDG Percent Exposure Index97.41 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Sep 16 - Oct 9)
Number of Fish Observed21617
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [21617]
Tailrace TDG Percent Exposure Index96.61 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 1
5% of Run passedJul 2
10% of Run passedSep 6
50% of Run passedSep 28
90% of Run passedOct 25
95% of Run passedNov 4
Last Day of RunDec 31
Date(s) When Tailrace TDG Percent Crosses 120 %
May 2, May 4, May 16, May 21, Jun 2, Jun 8

1. Total Run Analyzed [40092] is less than total observed during the period [41646]. Only fish observed on days with River Parameter data are analyzed.