Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook 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 (Apr 4 - Nov 27)
Total Number of Fish Observed9581
Percent of Total Run Analyzed [Number Observed]100 % [9581]
Tailrace TDG Percent Exposure Index123.89 %
Percent of Fish Exposed [Number Exposed]97.2 % [9313]
Number of Days Fish Exposed87
Middle 80% of Run Period (Apr 23 - May 22)
Number of Fish Observed8046
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [8046]
Tailrace TDG Percent Exposure Index124.46 %
Percent of Fish Exposed [Number Exposed]100 % [8046]
Number of Days Fish Exposed30
Middle 50% of Run Period (Apr 27 - May 12)
Number of Fish Observed5148
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [5148]
Tailrace TDG Percent Exposure Index123.95 %
Percent of Fish Exposed [Number Exposed]100 % [5148]
Number of Days Fish Exposed16
Run Dates
First Day of RunApr 4
5% of Run passedApr 22
10% of Run passedApr 23
50% of Run passedMay 2
90% of Run passedMay 22
95% of Run passedJun 4
Last Day of RunNov 27
Date(s) When Tailrace TDG Percent Crosses 115 %
Jun 26, Jun 27, Jun 28, Jun 29, Jul 4, Jul 6, Jul 8, Oct 25, Oct 26