Columbia Basin Performance Measures

Adult Passage Exposure Results

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Adult Steelhead Query Parameters
Year2018
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 (Mar 1 - Oct 22)
Total Number of Fish Observed69274
Percent of Total Run Analyzed [Number Observed]100 % [69274]
Tailrace TDG Percent Exposure Index102.96 %
Percent of Fish Exposed [Number Exposed]0 % [30]
Number of Days Fish Exposed18
Middle 80% of Run Period (Jul 30 - Oct 8)
Number of Fish Observed56022
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [56022]
Tailrace TDG Percent Exposure Index102.06 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Sep 5 - Sep 28)
Number of Fish Observed36385
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [36385]
Tailrace TDG Percent Exposure Index100.95 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 1
5% of Run passedJul 14
10% of Run passedJul 30
50% of Run passedSep 18
90% of Run passedOct 8
95% of Run passedOct 12
Last Day of RunOct 22
Date(s) When Tailrace TDG Percent Crosses 120 %
May 1, May 2, May 5, May 31, Jun 1, Jun 2