Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2017
ProjectJohn Day
River ParameterTailrace TDG Percent
Critical Tailrace TDG Percent Value115 %
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Mar 28 - Sep 12)
Total Number of Fish Observed7663
Percent of Total Run Analyzed [Number Observed]100 % [7663]
Tailrace TDG Percent Exposure Index125.79 %
Percent of Fish Exposed [Number Exposed]99.9 % [7656]
Number of Days Fish Exposed92
Middle 80% of Run Period (Apr 24 - May 31)
Number of Fish Observed6176
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [6176]
Tailrace TDG Percent Exposure Index126.55 %
Percent of Fish Exposed [Number Exposed]100 % [6176]
Number of Days Fish Exposed38
Middle 50% of Run Period (Apr 30 - May 21)
Number of Fish Observed4074
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [4074]
Tailrace TDG Percent Exposure Index128.96 %
Percent of Fish Exposed [Number Exposed]100 % [4074]
Number of Days Fish Exposed22
Run Dates
First Day of RunMar 28
5% of Run passedApr 18
10% of Run passedApr 24
50% of Run passedMay 13
90% of Run passedMay 31
95% of Run passedJun 4
Last Day of RunSep 12
Date(s) When Tailrace TDG Percent Crosses 115 %
Jun 26, Jun 27, Jun 28, Jun 29, Jul 4, Jul 6, Jul 8