Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2018
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 (Feb 27 - Aug 13)
Total Number of Fish Observed5314
Percent of Total Run Analyzed [Number Observed]100 % [5314]
Tailrace TDG Percent Exposure Index121.02 %
Percent of Fish Exposed [Number Exposed]39.7 % [2110]
Number of Days Fish Exposed28
Middle 80% of Run Period (Apr 25 - May 26)
Number of Fish Observed4366
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [4366]
Tailrace TDG Percent Exposure Index121.64 %
Percent of Fish Exposed [Number Exposed]45.1 % [1973]
Number of Days Fish Exposed23
Middle 50% of Run Period (Apr 28 - May 11)
Number of Fish Observed3068
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [3068]
Tailrace TDG Percent Exposure Index120.4 %
Percent of Fish Exposed [Number Exposed]41.3 % [1269]
Number of Days Fish Exposed8
Run Dates
First Day of RunFeb 27
5% of Run passedApr 23
10% of Run passedApr 25
50% of Run passedMay 2
90% of Run passedMay 26
95% of Run passedJun 4
Last Day of RunAug 13
Date(s) When Tailrace TDG Percent Crosses 120 %
May 1, May 2, May 5, May 31, Jun 1, Jun 2