Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2020
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 Observed58757
Percent of Total Run Analyzed [Number Observed]93.51 % [54945]1
Tailrace TDG Percent Exposure Index100.01 %
Percent of Fish Exposed [Number Exposed]0 % [35]
Number of Days Fish Exposed12
Middle 80% of Run Period (Aug 31 - Oct 24)
Number of Fish Observed47232
Percent of Middle 80% of Run Analyzed [Number Observed]94.29 % [44538]
Tailrace TDG Percent Exposure Index98.82 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Sep 21 - Oct 12)
Number of Fish Observed30881
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [30881]
Tailrace TDG Percent Exposure Index98.87 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 1
5% of Run passedJul 24
10% of Run passedAug 31
50% of Run passedSep 30
90% of Run passedOct 24
95% of Run passedNov 5
Last Day of RunDec 30
Date(s) When Tailrace TDG Percent Crosses 120 %
May 1, May 2, May 12, May 14, May 17, May 18, May 19, May 25, May 26, Jun 9, Jun 11, Jun 12, Jun 13, Jun 15, Jun 20, Jun 21

1. Total Run Analyzed [54945] is less than total observed during the period [58757]. Only fish observed on days with River Parameter data are analyzed.