Columbia Basin Performance Measures

Adult Passage Exposure Results

Adult Chinook Query Parameters

Year	2024
Project	Little Goose
River Parameter	Temperature Tailrace
Critical Temperature Tailrace Value	15 °C
Calculate Exposure	Above Critical Value
River Parameter Data Fill	No
Query Dates	3/15 - 6/15

Total Run Period (Apr 5 - Jun 15)

Total Number of Fish Observed	43233
Percent of Total Run Analyzed [Number Observed]	100 % [43233]
Temperature Tailrace Exposure Index	13.54 °C
Percent of Fish Exposed [Number Exposed]	3.4 % [1509]
Number of Days Fish Exposed	4

Middle 80% of Run Period (May 12 - Jun 6)

Number of Fish Observed	35096
Percent of Middle 80% of Run Analyzed [Number Observed]	100 % [35096]
Temperature Tailrace Exposure Index	13.63 °C
Percent of Fish Exposed [Number Exposed]	0 % [0]
Number of Days Fish Exposed	0

Middle 50% of Run Period (May 14 - May 26)

Number of Fish Observed	24198
Percent of Middle 50% of Run Analyzed [Number Observed]	100 % [24198]
Temperature Tailrace Exposure Index	13.91 °C
Percent of Fish Exposed [Number Exposed]	0 % [0]
Number of Days Fish Exposed	0

Run Dates

First Day of Run	Apr 5
5% of Run passed	May 8
10% of Run passed	May 12
50% of Run passed	May 18
90% of Run passed	Jun 6
95% of Run passed	Jun 10
Last Day of Run	Jun 15

Date(s) When Temperature Tailrace Crosses 15 °C

Jun 12