Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2019
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 11 - Jun 23)
Total Number of Fish Observed3783
Percent of Total Run Analyzed [Number Observed]100 % [3783]
Tailrace TDG Percent Exposure Index118.45 %
Percent of Fish Exposed [Number Exposed]6.2 % [238]
Number of Days Fish Exposed3
Middle 80% of Run Period (Apr 21 - May 26)
Number of Fish Observed3095
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [3095]
Tailrace TDG Percent Exposure Index118.68 %
Percent of Fish Exposed [Number Exposed]7.2 % [225]
Number of Days Fish Exposed2
Middle 50% of Run Period (Apr 24 - May 19)
Number of Fish Observed2100
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [2100]
Tailrace TDG Percent Exposure Index118.72 %
Percent of Fish Exposed [Number Exposed]2.8 % [59]
Number of Days Fish Exposed1
Run Dates
First Day of RunMar 11
5% of Run passedApr 16
10% of Run passedApr 21
50% of Run passedMay 1
90% of Run passedMay 26
95% of Run passedJun 1
Last Day of RunJun 23
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 10, Apr 11, May 18, May 19, May 20, May 21