Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2024
ProjectJohn Day
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 3 - Oct 31)
Total Number of Fish Observed127116
Percent of Total Run Analyzed [Number Observed]100 % [127116]
Tailrace TDG Percent Exposure Index105.46 %
Percent of Fish Exposed [Number Exposed]2.1 % [2758]
Number of Days Fish Exposed3
Middle 80% of Run Period (Aug 2 - Oct 9)
Number of Fish Observed102523
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [102523]
Tailrace TDG Percent Exposure Index104.46 %
Percent of Fish Exposed [Number Exposed]1.4 % [1478]
Number of Days Fish Exposed1
Middle 50% of Run Period (Sep 1 - Sep 26)
Number of Fish Observed67970
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [67970]
Tailrace TDG Percent Exposure Index103.29 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunJan 3
5% of Run passedJul 11
10% of Run passedAug 2
50% of Run passedSep 16
90% of Run passedOct 9
95% of Run passedOct 18
Last Day of RunOct 31
Date(s) When Tailrace TDG Percent Crosses 120 %
Jul 17, Jul 18, Oct 9, Oct 11