Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2021
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 25 - Dec 1)
Total Number of Fish Observed738
Percent of Total Run Analyzed [Number Observed]100 % [738]
Tailrace TDG Percent Exposure Index117.71 %
Percent of Fish Exposed [Number Exposed]2 % [15]
Number of Days Fish Exposed3
Middle 80% of Run Period (May 3 - Jun 20)
Number of Fish Observed621
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [621]
Tailrace TDG Percent Exposure Index118.23 %
Percent of Fish Exposed [Number Exposed]2.4 % [15]
Number of Days Fish Exposed3
Middle 50% of Run Period (May 8 - Jun 1)
Number of Fish Observed384
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [384]
Tailrace TDG Percent Exposure Index118.03 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunFeb 25
5% of Run passedMay 2
10% of Run passedMay 3
50% of Run passedMay 16
90% of Run passedJun 20
95% of Run passedJul 14
Last Day of RunDec 1
Date(s) When Tailrace TDG Percent Crosses 120 %
Jun 5, Jun 8