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 - Jul 1)
Total Number of Fish Observed5770
Percent of Total Run Analyzed [Number Observed]100 % [5770]
Tailrace TDG Percent Exposure Index120.28 %
Percent of Fish Exposed [Number Exposed]63.3 % [3657]
Number of Days Fish Exposed58
Middle 80% of Run Period (Apr 8 - May 25)
Number of Fish Observed4645
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [4645]
Tailrace TDG Percent Exposure Index121.26 %
Percent of Fish Exposed [Number Exposed]72.5 % [3368]
Number of Days Fish Exposed41
Middle 50% of Run Period (Apr 12 - May 11)
Number of Fish Observed3076
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [3076]
Tailrace TDG Percent Exposure Index121.03 %
Percent of Fish Exposed [Number Exposed]81.3 % [2502]
Number of Days Fish Exposed27
Run Dates
First Day of RunMar 27
5% of Run passedApr 4
10% of Run passedApr 8
50% of Run passedApr 23
90% of Run passedMay 25
95% of Run passedJun 11
Last Day of RunJul 1
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 14, May 5, May 6, May 27, May 30, Jun 15