Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook Query Parameters
Year2021
ProjectLittle Goose
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 22 - Jun 29)
Total Number of Fish Observed585
Percent of Total Run Analyzed [Number Observed]100 % [585]
Tailrace TDG Percent Exposure Index118.74 %
Percent of Fish Exposed [Number Exposed]23.4 % [137]
Number of Days Fish Exposed11
Middle 80% of Run Period (Apr 21 - May 20)
Number of Fish Observed483
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [483]
Tailrace TDG Percent Exposure Index119.1 %
Percent of Fish Exposed [Number Exposed]25 % [121]
Number of Days Fish Exposed6
Middle 50% of Run Period (Apr 25 - May 11)
Number of Fish Observed315
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [315]
Tailrace TDG Percent Exposure Index118.97 %
Percent of Fish Exposed [Number Exposed]12.3 % [39]
Number of Days Fish Exposed2
Run Dates
First Day of RunMar 22
5% of Run passedApr 18
10% of Run passedApr 21
50% of Run passedMay 6
90% of Run passedMay 20
95% of Run passedJun 2
Last Day of RunJun 29
Date(s) When Tailrace TDG Percent Crosses 120 %
May 2, May 4, May 16, May 21, Jun 2, Jun 8