Columbia Basin Performance Measures

PIT Tag Exposure Results

graph
PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2025
ProjectBonneville
River ParameterTemperature Tailrace
Critical Temperature Tailrace Value15 °C
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period ( - )
Total Number of Fish Observed1621
Percent of Total Run Analyzed [Number Observed]99.87 % [1619]1
Temperature Tailrace Exposure Index13.22 °C
Percent of Fish Exposed [Number Exposed]9.2 % [150]
Number of Days Fish Exposed27
Middle 80% of Run Period ( - )
Number of Fish Observed1330
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [1330]
Temperature Tailrace Exposure Index13.04 °C
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period ( - )
Number of Fish Observed898
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [898]
Temperature Tailrace Exposure Index13.1 °C
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of Run
5% of Run passed
10% of Run passed
50% of Run passed
90% of Run passed
95% of Run passed
Last Day of Run
Date(s) When Temperature Tailrace Crosses 15 °C
1. Total Run Analyzed [1619] is less than total observed during the period [1621]. Only fish observed on days with River Parameter data are analyzed.