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 17)
Total Number of Fish Observed4651
Percent of Total Run Analyzed [Number Observed]100 % [4651]
Tailrace TDG Percent Exposure Index120.15 %
Percent of Fish Exposed [Number Exposed]61 % [2840]
Number of Days Fish Exposed33
Middle 80% of Run Period (Apr 6 - May 11)
Number of Fish Observed3784
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [3784]
Tailrace TDG Percent Exposure Index120.48 %
Percent of Fish Exposed [Number Exposed]63.1 % [2388]
Number of Days Fish Exposed27
Middle 50% of Run Period (Apr 11 - May 3)
Number of Fish Observed2424
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [2424]
Tailrace TDG Percent Exposure Index121.08 %
Percent of Fish Exposed [Number Exposed]72.5 % [1759]
Number of Days Fish Exposed20
Run Dates
First Day of RunMar 27
5% of Run passedApr 3
10% of Run passedApr 6
50% of Run passedApr 16
90% of Run passedMay 11
95% of Run passedMay 15
Last Day of RunMay 17
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 14, May 5, May 6