Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook 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 12 - Dec 4)
Total Number of Fish Observed2972
Percent of Total Run Analyzed [Number Observed]100 % [2972]
Tailrace TDG Percent Exposure Index118.17 %
Percent of Fish Exposed [Number Exposed]6.3 % [188]
Number of Days Fish Exposed3
Middle 80% of Run Period (Apr 25 - Jul 18)
Number of Fish Observed2426
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [2426]
Tailrace TDG Percent Exposure Index118.71 %
Percent of Fish Exposed [Number Exposed]7.6 % [186]
Number of Days Fish Exposed2
Middle 50% of Run Period (Apr 29 - May 23)
Number of Fish Observed1593
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [1593]
Tailrace TDG Percent Exposure Index118.85 %
Percent of Fish Exposed [Number Exposed]11.6 % [186]
Number of Days Fish Exposed2
Run Dates
First Day of RunMar 12
5% of Run passedApr 23
10% of Run passedApr 25
50% of Run passedMay 16
90% of Run passedJul 18
95% of Run passedJul 31
Last Day of RunDec 4
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 10, Apr 11, May 18, May 19, May 20, May 21