Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2024
ProjectThe Dalles
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 Observed155330
Percent of Total Run Analyzed [Number Observed]100 % [155330]
Temperature Tailrace Exposure Index20.15 C
Percent of Fish Exposed [Number Exposed]99.1 % [153998]
Number of Days Fish Exposed146
Middle 80% of Run Period (Jul 23 - Oct 2)
Number of Fish Observed124716
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [124716]
Temperature Tailrace Exposure Index20.54 C
Percent of Fish Exposed [Number Exposed]100 % [124716]
Number of Days Fish Exposed72
Middle 50% of Run Period (Aug 26 - Sep 21)
Number of Fish Observed82380
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [82380]
Temperature Tailrace Exposure Index20.54 C
Percent of Fish Exposed [Number Exposed]100 % [82380]
Number of Days Fish Exposed27
Run Dates
First Day of RunApr 1
5% of Run passedJul 9
10% of Run passedJul 23
50% of Run passedSep 9
90% of Run passedOct 2
95% of Run passedOct 12
Last Day of RunOct 31
Date(s) When Temperature Tailrace Crosses 15 C
Jun 5, Oct 29