School of Aquatic and Fishery Sciences

Columbia Basin Performance Measures

Forecasted Juvenile Passage Exposure Results for Jul 20, 2025

graph

Forecasted Steelhead Snake R Wild Query Parameters
Year	2025
Project	Little Goose
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 20, 2025

Total Run Period (Mar 12 - Jul 28)
Temperature Exposure Index	12.56 °C
Percent of Fish Exposed	11 %
Number of Days Fish Exposed	36

Middle 80% of Run Period (Apr 29 - May 31)
Temperature Exposure Index	12.41 °C
Percent of Fish Exposed	1.6 %
Number of Days Fish Exposed	1

Middle 50% of Run Period (May 6 - May 23)
Temperature Exposure Index	12.12 °C
Percent of Fish Exposed	0 %
Number of Days Fish Exposed	0

Run Dates
First Day of Run	Mar 12
5% of Run passed	Apr 23
10% of Run passed	Apr 29
50% of Run passed	May 14
90% of Run passed	May 31
95% of Run passed	Jun 5
Last Day of Run	Jul 28

Date(s) When Temperature Crosses 15 °C
May 31

1. Total Run Analyzed [99.942] is less than total observed during the period [100]. Only fish observed on days with River Parameter data are analyzed.