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 Observed7690
Percent of Total Run Analyzed [Number Observed]100 % [7690]
Tailrace TDG Percent Exposure Index125.79 %
Percent of Fish Exposed [Number Exposed]99.9 % [7683]
Number of Days Fish Exposed92
Middle 80% of Run Period (Apr 24 - May 31)
Number of Fish Observed6203
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [6203]
Tailrace TDG Percent Exposure Index126.54 %
Percent of Fish Exposed [Number Exposed]100 % [6203]
Number of Days Fish Exposed38
Middle 50% of Run Period (Apr 30 - May 21)
Number of Fish Observed4095
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [4095]
Tailrace TDG Percent Exposure Index128.95 %
Percent of Fish Exposed [Number Exposed]100 % [4095]
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