Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2017
ProjectLower Granite
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 21 - Jul 20)
Total Number of Fish Observed9462
Percent of Total Run Analyzed [Number Observed]100 % [9462]
Tailrace TDG Percent Exposure Index120.73 %
Percent of Fish Exposed [Number Exposed]98.3 % [9308]
Number of Days Fish Exposed92
Middle 80% of Run Period (Apr 12 - May 23)
Number of Fish Observed7710
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [7710]
Tailrace TDG Percent Exposure Index120.25 %
Percent of Fish Exposed [Number Exposed]99.1 % [7645]
Number of Days Fish Exposed41
Middle 50% of Run Period (Apr 16 - May 7)
Number of Fish Observed4925
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [4925]
Tailrace TDG Percent Exposure Index119.45 %
Percent of Fish Exposed [Number Exposed]98.6 % [4860]
Number of Days Fish Exposed21
Run Dates
First Day of RunMar 21
5% of Run passedApr 9
10% of Run passedApr 12
50% of Run passedApr 24
90% of Run passedMay 23
95% of Run passedMay 28
Last Day of RunJul 20
Date(s) When Tailrace TDG Percent Crosses 115 %
May 4, May 5, Jun 16, Jun 17, Jun 23