Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2024
ProjectLower Granite
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 1 - May 1)
Total Number of Fish Observed1521
Percent of Total Run Analyzed [Number Observed]100 % [1521]
Tailrace TDG Percent Exposure Index108.66 %
Percent of Fish Exposed [Number Exposed]13.2 % [201]
Number of Days Fish Exposed18
Middle 80% of Run Period (Mar 4 - Apr 16)
Number of Fish Observed1227
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [1227]
Tailrace TDG Percent Exposure Index107.93 %
Percent of Fish Exposed [Number Exposed]4.7 % [58]
Number of Days Fish Exposed3
Middle 50% of Run Period (Mar 11 - Apr 4)
Number of Fish Observed765
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [765]
Tailrace TDG Percent Exposure Index106.34 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 1
5% of Run passedMar 2
10% of Run passedMar 4
50% of Run passedMar 23
90% of Run passedApr 16
95% of Run passedApr 22
Last Day of RunMay 1
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 14