Columbia Basin Performance Measures

Adult Passage Exposure Results

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Adult Chinook Query Parameters
Year2019
ProjectLittle Goose
River ParameterTailrace TDG Percent
Critical Tailrace TDG Percent Value120 %
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates3/15 - 6/15
Total Run Period (Apr 21 - Jun 15)
Total Number of Fish Observed20732
Percent of Total Run Analyzed [Number Observed]100 % [20732]
Tailrace TDG Percent Exposure Index119.19 %
Percent of Fish Exposed [Number Exposed]14.2 % [2960]
Number of Days Fish Exposed10
Middle 80% of Run Period (May 13 - Jun 8)
Number of Fish Observed17189
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [17189]
Tailrace TDG Percent Exposure Index119.31 %
Percent of Fish Exposed [Number Exposed]17.1 % [2949]
Number of Days Fish Exposed7
Middle 50% of Run Period (May 17 - Jun 4)
Number of Fish Observed10696
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [10696]
Tailrace TDG Percent Exposure Index119.4 %
Percent of Fish Exposed [Number Exposed]22.9 % [2450]
Number of Days Fish Exposed6
Run Dates
First Day of RunApr 21
5% of Run passedMay 12
10% of Run passedMay 13
50% of Run passedMay 23
90% of Run passedJun 8
95% of Run passedJun 11
Last Day of RunJun 15
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 28, May 18, May 20, Jun 1, Jun 6