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	Little Goose
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 23 - Jun 29)
TDG Percent Exposure Index	121.47 %
Percent of Fish Exposed	74.2 %
Number of Days Fish Exposed	52

Middle 80% of Run Period (May 11 - Jun 17)
TDG Percent Exposure Index	122 %
Percent of Fish Exposed	80.9 %
Number of Days Fish Exposed	26

Middle 50% of Run Period (May 16 - Jun 3)
TDG Percent Exposure Index	121.94 %
Percent of Fish Exposed	88.3 %
Number of Days Fish Exposed	16

Run Dates
First Day of Run	Mar 23
5% of Run passed	May 8
10% of Run passed	May 11
50% of Run passed	May 21
90% of Run passed	Jun 17
95% of Run passed	Jun 21
Last Day of Run	Jun 29

Date(s) When TDG Percent Crosses 120 %
Apr 3
Apr 4
Apr 9
Apr 25
May 2
May 24
May 27
Jun 9

1. Total Run Analyzed [99.955] is less than total observed during the period [100]. Only fish observed on days with River Parameter data are analyzed.