Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead 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 21 - Jun 30)
Total Number of Fish Observed7816
Percent of Total Run Analyzed [Number Observed]100 % [7816]
Tailrace TDG Percent Exposure Index122.78 %
Percent of Fish Exposed [Number Exposed]94.2 % [7364]
Number of Days Fish Exposed58
Middle 80% of Run Period (Apr 24 - May 31)
Number of Fish Observed6363
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [6363]
Tailrace TDG Percent Exposure Index122.99 %
Percent of Fish Exposed [Number Exposed]97.4 % [6201]
Number of Days Fish Exposed34
Middle 50% of Run Period (May 3 - May 18)
Number of Fish Observed4145
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [4145]
Tailrace TDG Percent Exposure Index123.76 %
Percent of Fish Exposed [Number Exposed]98.6 % [4089]
Number of Days Fish Exposed15
Run Dates
First Day of RunMar 21
5% of Run passedApr 17
10% of Run passedApr 24
50% of Run passedMay 15
90% of Run passedMay 31
95% of Run passedJun 6
Last Day of RunJun 30
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 14, May 5, May 6, May 27, May 30, Jun 15