Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2024
ProjectLower Granite
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 27 - May 1)
Total Number of Fish Observed3377
Percent of Total Run Analyzed [Number Observed]100 % [3377]
Tailrace TDG Percent Exposure Index119.5 %
Percent of Fish Exposed [Number Exposed]48.3 % [1634]
Number of Days Fish Exposed18
Middle 80% of Run Period (Apr 4 - Apr 27)
Number of Fish Observed2838
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [2838]
Tailrace TDG Percent Exposure Index120.16 %
Percent of Fish Exposed [Number Exposed]47.3 % [1345]
Number of Days Fish Exposed14
Middle 50% of Run Period (Apr 9 - Apr 18)
Number of Fish Observed1880
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [1880]
Tailrace TDG Percent Exposure Index120.44 %
Percent of Fish Exposed [Number Exposed]43.6 % [821]
Number of Days Fish Exposed5
Run Dates
First Day of RunMar 27
5% of Run passedApr 3
10% of Run passedApr 4
50% of Run passedApr 13
90% of Run passedApr 27
95% of Run passedApr 29
Last Day of RunMay 1
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 14