Columbia Basin Performance Measures

Forecasted Juvenile Passage Exposure Results for May 1, 2024

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Forecasted Steelhead Snake R Wild Query Parameters
Year2024
ProjectJohn Day
River ParameterTDG Percent
Critical TDG Percent Value120 %
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Forecast DateMay 1, 2024
Total Run Period (Mar 21 - Aug 18)
TDG Percent Exposure Index120.43 %
Percent of Fish Exposed74.6 %
Number of Days Fish Exposed40
Middle 80% of Run Period (May 6 - Jun 1)
TDG Percent Exposure Index120.81 %
Percent of Fish Exposed82.4 %
Number of Days Fish Exposed21
Middle 50% of Run Period (May 12 - May 25)
TDG Percent Exposure Index121.03 %
Percent of Fish Exposed100 %
Number of Days Fish Exposed14
Run Dates
First Day of RunMar 21
5% of Run passedMay 2
10% of Run passedMay 6
50% of Run passedMay 18
90% of Run passedJun 1
95% of Run passedJun 5
Last Day of RunAug 18
Date(s) When TDG Percent Crosses 120 %
May 12, Jun 7, Jun 9, Jun 23

1. Total Run Analyzed [99.956] is less than total observed during the period [100]. Only fish observed on days with River Parameter data are analyzed.