Columbia Basin Performance Measures

Adult Passage Exposure Results

Adult Steelhead Query Parameters

Year	2024
Project	Little Goose
River Parameter	Tailrace TDG Percent
Critical Tailrace TDG Percent Value	120 %
Calculate Exposure	Above Critical Value
River Parameter Data Fill	No
Query Dates	1/1 - 12/31

Total Run Period (Apr 1 - Oct 31)

Total Number of Fish Observed	95619
Percent of Total Run Analyzed [Number Observed]	100 % [95619]
Tailrace TDG Percent Exposure Index	102.27 %
Percent of Fish Exposed [Number Exposed]	0.1 % [98]
Number of Days Fish Exposed	21

Middle 80% of Run Period (Sep 5 - Oct 16)

Number of Fish Observed	77783
Percent of Middle 80% of Run Analyzed [Number Observed]	100 % [77783]
Tailrace TDG Percent Exposure Index	101.57 %
Percent of Fish Exposed [Number Exposed]	0 % [0]
Number of Days Fish Exposed	0

Middle 50% of Run Period (Sep 14 - Oct 5)

Number of Fish Observed	51095
Percent of Middle 50% of Run Analyzed [Number Observed]	100 % [51095]
Tailrace TDG Percent Exposure Index	101.18 %
Percent of Fish Exposed [Number Exposed]	0 % [0]
Number of Days Fish Exposed	0

Run Dates

First Day of Run	Apr 1
5% of Run passed	Aug 23
10% of Run passed	Sep 5
50% of Run passed	Sep 26
90% of Run passed	Oct 16
95% of Run passed	Oct 22
Last Day of Run	Oct 31

Date(s) When Tailrace TDG Percent Crosses 120 %

Apr 13

Apr 17

May 13

May 21

May 24

May 25

May 30

May 31

Jun 1

Jun 14