Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2024
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 (Mar 20 - Jun 30)
Total Number of Fish Observed1824
Percent of Total Run Analyzed [Number Observed]99.72 % [1819]1
Temperature Tailrace Exposure Index13.67 C
Percent of Fish Exposed [Number Exposed]12 % [220]
Number of Days Fish Exposed24
Middle 80% of Run Period (Apr 29 - Jun 6)
Number of Fish Observed1495
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [1495]
Temperature Tailrace Exposure Index13.66 C
Percent of Fish Exposed [Number Exposed]3.6 % [54]
Number of Days Fish Exposed3
Middle 50% of Run Period (May 7 - May 24)
Number of Fish Observed984
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [984]
Temperature Tailrace Exposure Index13.92 C
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 20
5% of Run passedApr 25
10% of Run passedApr 29
50% of Run passedMay 18
90% of Run passedJun 6
95% of Run passedJun 10
Last Day of RunJun 30
Date(s) When Temperature Tailrace Crosses 15 C
Jun 1, Jun 3, Jun 6

1. Total Run Analyzed [1819] is less than total observed during the period [1824]. Only fish observed on days with River Parameter data are analyzed.