Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2017
ProjectIce Harbor
River ParameterTailrace TDG Percent
Critical Tailrace TDG Percent Value115 %
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Mar 29 - Jun 26)
Total Number of Fish Observed1978
Percent of Total Run Analyzed [Number Observed]99.24 % [1963]1
Tailrace TDG Percent Exposure Index121.77 %
Percent of Fish Exposed [Number Exposed]100 % [1963]
Number of Days Fish Exposed82
Middle 80% of Run Period (Apr 18 - May 28)
Number of Fish Observed1607
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [1607]
Tailrace TDG Percent Exposure Index121.71 %
Percent of Fish Exposed [Number Exposed]100 % [1607]
Number of Days Fish Exposed41
Middle 50% of Run Period (May 5 - May 23)
Number of Fish Observed1029
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [1029]
Tailrace TDG Percent Exposure Index122.12 %
Percent of Fish Exposed [Number Exposed]100 % [1029]
Number of Days Fish Exposed19
Run Dates
First Day of RunMar 29
5% of Run passedApr 11
10% of Run passedApr 18
50% of Run passedMay 15
90% of Run passedMay 28
95% of Run passedMay 31
Last Day of RunJun 26

1. Total Run Analyzed [1963] is less than total observed during the period [1978]. Only fish observed on days with River Parameter data are analyzed.