Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Chinook Query Parameters
Year2018
ProjectLower Monumental
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 10 - Jun 15)
Total Number of Fish Observed36148
Percent of Total Run Analyzed [Number Observed]97.54 % [35260]1
Tailrace TDG Percent Exposure Index118.81 %
Percent of Fish Exposed [Number Exposed]54.3 % [19170]
Number of Days Fish Exposed20
Middle 80% of Run Period (May 14 - Jun 9)
Number of Fish Observed29785
Percent of Middle 80% of Run Analyzed [Number Observed]97.01 % [28897]
Tailrace TDG Percent Exposure Index119.27 %
Percent of Fish Exposed [Number Exposed]61.3 % [17735]
Number of Days Fish Exposed15
Middle 50% of Run Period (May 18 - Jun 3)
Number of Fish Observed19847
Percent of Middle 50% of Run Analyzed [Number Observed]95.52 % [18959]
Tailrace TDG Percent Exposure Index120.66 %
Percent of Fish Exposed [Number Exposed]86.1 % [16338]
Number of Days Fish Exposed14
Run Dates
First Day of RunApr 10
5% of Run passedMay 12
10% of Run passedMay 14
50% of Run passedMay 27
90% of Run passedJun 9
95% of Run passedJun 12
Last Day of RunJun 15
Date(s) When Tailrace TDG Percent Crosses 120 %
May 7, May 12, May 17, Jun 1, Jun 2, Jun 3

1. Total Run Analyzed [35260] is less than total observed during the period [36148]. Only fish observed on days with River Parameter data are analyzed.