Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2022
ProjectJohn Day
River ParameterTailrace TDG Percent
Critical Tailrace TDG Percent Value120 %
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Mar 30 - Jul 5)
Total Number of Fish Observed758
Percent of Total Run Analyzed [Number Observed]100 % [758]
Tailrace TDG Percent Exposure Index122.07 %
Percent of Fish Exposed [Number Exposed]77.8 % [590]
Number of Days Fish Exposed37
Middle 80% of Run Period (May 10 - Jun 15)
Number of Fish Observed617
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [617]
Tailrace TDG Percent Exposure Index122.73 %
Percent of Fish Exposed [Number Exposed]84.6 % [522]
Number of Days Fish Exposed26
Middle 50% of Run Period (May 22 - Jun 9)
Number of Fish Observed404
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [404]
Tailrace TDG Percent Exposure Index122.8 %
Percent of Fish Exposed [Number Exposed]92.8 % [375]
Number of Days Fish Exposed17
Run Dates
First Day of RunMar 30
5% of Run passedMay 2
10% of Run passedMay 10
50% of Run passedJun 2
90% of Run passedJun 15
95% of Run passedJun 19
Last Day of RunJul 5
Date(s) When Tailrace TDG Percent Crosses 120 %
May 19, May 22, May 23, May 24, May 25, Jul 1