School of Aquatic and Fishery Sciences

Columbia Basin Performance Measures

Forecasted Juvenile Passage Exposure Results for Aug 12, 2025

graph

Forecasted Yearling Chinook Snake R All Spr/Sum Wild Query Parameters
Year	2025
Project	McNary
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	Aug 12, 2025

Total Run Period (Mar 2 - Sep 26)
TDG Percent Exposure Index	119.41 %
Percent of Fish Exposed	26.8 %
Number of Days Fish Exposed	14

Middle 80% of Run Period (May 3 - Jun 7)
TDG Percent Exposure Index	119.73 %
Percent of Fish Exposed	32.7 %
Number of Days Fish Exposed	11

Middle 50% of Run Period (May 9 - May 23)
TDG Percent Exposure Index	119.97 %
Percent of Fish Exposed	38.7 %
Number of Days Fish Exposed	5

Run Dates
First Day of Run	Mar 2
5% of Run passed	Apr 29
10% of Run passed	May 3
50% of Run passed	May 15
90% of Run passed	Jun 7
95% of Run passed	Jun 17
Last Day of Run	Sep 26

Date(s) When TDG Percent Crosses 120 %
Apr 14
Apr 17
May 6
May 7
May 9
May 14
May 31
Jun 5

1. Total Run Analyzed [99.9350000000001] is less than total observed during the period [100]. Only fish observed on days with River Parameter data are analyzed.