Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2024
ProjectJohn Day
River ParameterTemperature Tailrace
Critical Temperature Tailrace Value15 C
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]
Temperature Tailrace Exposure Index20.03 C
Percent of Fish Exposed [Number Exposed]98.8 % [125677]
Number of Days Fish Exposed145
Middle 80% of Run Period (Aug 2 - Oct 9)
Number of Fish Observed102523
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [102523]
Temperature Tailrace Exposure Index20.44 C
Percent of Fish Exposed [Number Exposed]100 % [102523]
Number of Days Fish Exposed69
Middle 50% of Run Period (Sep 1 - Sep 26)
Number of Fish Observed67970
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [67970]
Temperature Tailrace Exposure Index20.53 C
Percent of Fish Exposed [Number Exposed]100 % [67970]
Number of Days Fish Exposed26
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 Temperature Tailrace Crosses 15 C
Jun 7, Oct 30