Columbia Basin Performance Measures

Forecasted Juvenile Passage Exposure Results for May 17, 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 17, 2024
Total Run Period (Mar 21 - Aug 18)
TDG Percent Exposure Index118.25 %
Percent of Fish Exposed21.6 %
Number of Days Fish Exposed27
Middle 80% of Run Period (May 6 - May 30)
TDG Percent Exposure Index118.01 %
Percent of Fish Exposed16.4 %
Number of Days Fish Exposed6
Middle 50% of Run Period (May 13 - May 23)
TDG Percent Exposure Index117.76 %
Percent of Fish Exposed9.2 %
Number of Days Fish Exposed1
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 passedMay 30
95% of Run passedJun 4
Last Day of RunAug 18
Date(s) When TDG Percent Crosses 120 %
May 16, May 17, May 26, Jun 7, Jun 9, Jun 23

1. Total Run Analyzed [99.95] is less than total observed during the period [100]. Only fish observed on days with River Parameter data are analyzed.