Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2024
ProjectMcNary
River ParameterTemperature Tailrace
Critical Temperature Tailrace Value15 C
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Apr 1 - Oct 31)
Total Number of Fish Observed113521
Percent of Total Run Analyzed [Number Observed]100 % [113521]
Temperature Tailrace Exposure Index19.53 C
Percent of Fish Exposed [Number Exposed]97.6 % [110847]
Number of Days Fish Exposed139
Middle 80% of Run Period (Aug 7 - Oct 11)
Number of Fish Observed91581
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [91581]
Temperature Tailrace Exposure Index19.93 C
Percent of Fish Exposed [Number Exposed]100 % [91581]
Number of Days Fish Exposed66
Middle 50% of Run Period (Sep 4 - Sep 28)
Number of Fish Observed58586
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [58586]
Temperature Tailrace Exposure Index20.19 C
Percent of Fish Exposed [Number Exposed]100 % [58586]
Number of Days Fish Exposed25
Run Dates
First Day of RunApr 1
5% of Run passedJul 15
10% of Run passedAug 7
50% of Run passedSep 19
90% of Run passedOct 11
95% of Run passedOct 19
Last Day of RunOct 31
Date(s) When Temperature Tailrace Crosses 15 C
Jun 8, Oct 25