Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2018
ProjectLower Monumental
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 (Apr 1 - Aug 12)
Total Number of Fish Observed3934
Percent of Total Run Analyzed [Number Observed]100 % [3934]
Tailrace TDG Percent Exposure Index116.23 %
Percent of Fish Exposed [Number Exposed]0.8 % [32]
Number of Days Fish Exposed12
Middle 80% of Run Period (Apr 9 - Aug 3)
Number of Fish Observed3253
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [3253]
Tailrace TDG Percent Exposure Index116.43 %
Percent of Fish Exposed [Number Exposed]0.9 % [32]
Number of Days Fish Exposed12
Middle 50% of Run Period (Apr 23 - Jul 27)
Number of Fish Observed2049
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [2049]
Tailrace TDG Percent Exposure Index116.21 %
Percent of Fish Exposed [Number Exposed]1.5 % [32]
Number of Days Fish Exposed12
Run Dates
First Day of RunApr 1
5% of Run passedApr 7
10% of Run passedApr 9
50% of Run passedJul 15
90% of Run passedAug 3
95% of Run passedAug 6
Last Day of RunAug 12
Date(s) When Tailrace TDG Percent Crosses 120 %
May 7, May 8, May 9, May 12, May 15, May 16, May 17, May 31, Jun 1, Jun 3