Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2018
ProjectJohn Day
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 - Jun 21)
Total Number of Fish Observed658
Percent of Total Run Analyzed [Number Observed]100 % [658]
Tailrace TDG Percent Exposure Index114.78 %
Percent of Fish Exposed [Number Exposed]4.5 % [30]
Number of Days Fish Exposed18
Middle 80% of Run Period (Mar 13 - Jun 20)
Number of Fish Observed561
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [561]
Tailrace TDG Percent Exposure Index114.81 %
Percent of Fish Exposed [Number Exposed]5.3 % [30]
Number of Days Fish Exposed18
Middle 50% of Run Period (Mar 22 - Jun 16)
Number of Fish Observed337
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [337]
Tailrace TDG Percent Exposure Index114.79 %
Percent of Fish Exposed [Number Exposed]8.9 % [30]
Number of Days Fish Exposed18
Run Dates
First Day of RunMar 1
5% of Run passedMar 11
10% of Run passedMar 13
50% of Run passedApr 18
90% of Run passedJun 20
95% of Run passedJun 21
Last Day of RunJun 21
Date(s) When Tailrace TDG Percent Crosses 120 %
May 1, May 2, May 5, May 31, Jun 1, Jun 2