School of Aquatic and Fishery Sciences

Columbia Basin Performance Measures

Forecasted Adult Passage Exposure Results for Jun 29, 2025

graph

All Adult Chinook mouth to Snake River Query Parameters
Year	2025
Project	John Day
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	Jun 29, 2025

Total Run Period (Mar 16 - Jun 20)
Temperature Exposure Index	13.75 °C
Percent of Fish Exposed	23.4 %
Number of Days Fish Exposed	24

Middle 80% of Run Period (Apr 29 - Jun 11)
Temperature Exposure Index	13.58 °C
Percent of Fish Exposed	17.7 %
Number of Days Fish Exposed	15

Middle 50% of Run Period (May 5 - May 26)
Temperature Exposure Index	13.13 °C
Percent of Fish Exposed	0 %
Number of Days Fish Exposed	0

Run Dates
First Day of Run	Mar 16
5% of Run passed	Apr 26
10% of Run passed	Apr 29
50% of Run passed	May 11
90% of Run passed	Jun 11
95% of Run passed	Jun 14
Last Day of Run	Jun 20

Date(s) When Temperature Crosses 15 °C
May 28

1. Total Run Analyzed [99.947] is less than total observed during the period [100]. Only fish observed on days with River Parameter data are analyzed.