School of Aquatic and Fishery Sciences

Columbia Basin Performance Measures

Forecasted Juvenile Passage Exposure Results for Jul 23, 2024

graph

Forecasted Steelhead Snake R Wild Query Parameters
Year	2024
Project	Bonneville
River Parameter	Temperature
Critical Temperature Value	15 °C
Calculate Exposure	Above Critical Value
River Parameter Data Fill	No
Query Dates	1/1 - 12/31
Forecast Date	Jul 23, 2024

Total Run Period (Mar 21 - Jul 27)
Temperature Exposure Index	14.94 °C
Percent of Fish Exposed	37.7 %
Number of Days Fish Exposed	38

Middle 80% of Run Period (May 16 - Jun 14)
Temperature Exposure Index	14.96 °C
Percent of Fish Exposed	34.3 %
Number of Days Fish Exposed	10

Middle 50% of Run Period (May 23 - Jun 8)
Temperature Exposure Index	14.83 °C
Percent of Fish Exposed	25.5 %
Number of Days Fish Exposed	4

Run Dates
First Day of Run	Mar 21
5% of Run passed	May 11
10% of Run passed	May 16
50% of Run passed	Jun 1
90% of Run passed	Jun 14
95% of Run passed	Jun 19
Last Day of Run	Jul 27

Date(s) When Temperature Crosses 15 °C
Jun 1
Jun 3
Jun 6

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.