Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2021
ProjectLower Granite
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 30)
Total Number of Fish Observed43336
Percent of Total Run Analyzed [Number Observed]99.64 % [43184]1
Tailrace TDG Percent Exposure Index99.53 %
Percent of Fish Exposed [Number Exposed]0 % [27]
Number of Days Fish Exposed1
Middle 80% of Run Period (Sep 7 - Oct 30)
Number of Fish Observed34950
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [34950]
Tailrace TDG Percent Exposure Index98.8 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Sep 19 - Oct 11)
Number of Fish Observed22005
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [22005]
Tailrace TDG Percent Exposure Index98.5 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 1
5% of Run passedApr 19
10% of Run passedSep 7
50% of Run passedSep 30
90% of Run passedOct 30
95% of Run passedNov 12
Last Day of RunDec 30
Date(s) When Tailrace TDG Percent Crosses 120 %
Aug 11, Aug 12

1. Total Run Analyzed [43184] is less than total observed during the period [43336]. Only fish observed on days with River Parameter data are analyzed.