Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2018
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 1 - Jul 11)
Total Number of Fish Observed10660
Percent of Total Run Analyzed [Number Observed]100 % [10660]
Tailrace TDG Percent Exposure Index116.84 %
Percent of Fish Exposed [Number Exposed]6.7 % [724]
Number of Days Fish Exposed6
Middle 80% of Run Period (Apr 11 - May 18)
Number of Fish Observed8698
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [8698]
Tailrace TDG Percent Exposure Index116.73 %
Percent of Fish Exposed [Number Exposed]5 % [443]
Number of Days Fish Exposed1
Middle 50% of Run Period (Apr 17 - May 11)
Number of Fish Observed5756
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [5756]
Tailrace TDG Percent Exposure Index116.58 %
Percent of Fish Exposed [Number Exposed]7.6 % [443]
Number of Days Fish Exposed1
Run Dates
First Day of RunMar 1
5% of Run passedApr 9
10% of Run passedApr 11
50% of Run passedMay 1
90% of Run passedMay 18
95% of Run passedMay 24
Last Day of RunJul 11
Date(s) When Tailrace TDG Percent Crosses 120 %
May 10, May 11, May 25, May 30