Columbia Basin Performance Measures

PIT Tag Exposure Results

PIT-Tagged Wild Spring/Summer 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	1/1 - 12/31

Total Run Period (Apr 2 - Jul 17)

Total Number of Fish Observed	1471
Percent of Total Run Analyzed [Number Observed]	100 % [1471]
Temperature Tailrace Exposure Index	11.79 °C
Percent of Fish Exposed [Number Exposed]	1.8 % [27]
Number of Days Fish Exposed	15

Middle 80% of Run Period (Apr 16 - May 20)

Number of Fish Observed	1222
Percent of Middle 80% of Run Analyzed [Number Observed]	100 % [1222]
Temperature Tailrace Exposure Index	11.74 °C
Percent of Fish Exposed [Number Exposed]	0 % [0]
Number of Days Fish Exposed	0

Middle 50% of Run Period (Apr 18 - May 9)

Number of Fish Observed	809
Percent of Middle 50% of Run Analyzed [Number Observed]	100 % [809]
Temperature Tailrace Exposure Index	11.34 °C
Percent of Fish Exposed [Number Exposed]	0 % [0]
Number of Days Fish Exposed	0

Run Dates

First Day of Run	Apr 2
5% of Run passed	Apr 13
10% of Run passed	Apr 16
50% of Run passed	Apr 23
90% of Run passed	May 20
95% of Run passed	Jun 2
Last Day of Run	Jul 17

Date(s) When Temperature Tailrace Crosses 15 °C

Jun 12