Columbia Basin Performance Measures

Forecasted Adult Passage Exposure Results for Jun 29, 2025

All Adult Chinook mouth to Snake River Query Parameters
Year	2025
Project	Bonneville
River Parameter	TDG Percent
Critical TDG Percent Value	120 %
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 14 - Jun 14)
TDG Percent Exposure Index	120.11 %
Percent of Fish Exposed	67.5 %
Number of Days Fish Exposed	41

Middle 80% of Run Period (Apr 26 - Jun 7)
TDG Percent Exposure Index	120.22 %
Percent of Fish Exposed	68.7 %
Number of Days Fish Exposed	29

Middle 50% of Run Period (May 2 - May 23)
TDG Percent Exposure Index	120.12 %
Percent of Fish Exposed	66.3 %
Number of Days Fish Exposed	15

Run Dates
First Day of Run	Mar 14
5% of Run passed	Apr 23
10% of Run passed	Apr 26
50% of Run passed	May 8
90% of Run passed	Jun 7
95% of Run passed	Jun 11
Last Day of Run	Jun 14

Date(s) When TDG Percent Crosses 120 %
Apr 12
Apr 13
Apr 17
Apr 21
Apr 22
Apr 26
Apr 27
May 5
May 7
May 9
May 13
May 21
May 22
May 25
May 28
Jun 1
Jun 3
Jun 4
Jun 5
Jun 10
Jun 11
Jun 12

1. Total Run Analyzed [99.241] is less than total observed during the period [100]. Only fish observed on days with River Parameter data are analyzed.