Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2018
ProjectThe Dalles
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 (Jan 1 - Jun 21)
Total Number of Fish Observed610
Percent of Total Run Analyzed [Number Observed]100 % [610]
Tailrace TDG Percent Exposure Index115.26 %
Percent of Fish Exposed [Number Exposed]6.5 % [40]
Number of Days Fish Exposed16
Middle 80% of Run Period (Apr 4 - Jun 20)
Number of Fish Observed499
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [499]
Tailrace TDG Percent Exposure Index116.55 %
Percent of Fish Exposed [Number Exposed]8 % [40]
Number of Days Fish Exposed16
Middle 50% of Run Period (May 9 - Jun 19)
Number of Fish Observed362
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [362]
Tailrace TDG Percent Exposure Index116.83 %
Percent of Fish Exposed [Number Exposed]10.4 % [38]
Number of Days Fish Exposed15
Run Dates
First Day of RunJan 1
5% of Run passedFeb 10
10% of Run passedApr 4
50% of Run passedJun 13
90% of Run passedJun 20
95% of Run passedJun 21
Last Day of RunJun 21
Date(s) When Tailrace TDG Percent Crosses 120 %
May 2, May 3, May 5, May 26, May 27, May 28, May 30, May 31, Jun 2, Jun 3