Columbia Basin Performance Measures

Adult Passage Exposure Results

graph

Adult Steelhead Query Parameters
Year2017
ProjectThe Dalles
River ParameterTailrace TDG Percent
Critical Tailrace TDG Percent Value115 %
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Mar 1 - Dec 31)
Total Number of Fish Observed97012
Percent of Total Run Analyzed [Number Observed]99.99 % [97011]1
Tailrace TDG Percent Exposure Index102.45 %
Percent of Fish Exposed [Number Exposed]1.1 % [1093]
Number of Days Fish Exposed95
Middle 80% of Run Period (Aug 19 - Oct 4)
Number of Fish Observed77810
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [77810]
Tailrace TDG Percent Exposure Index101.59 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Middle 50% of Run Period (Sep 7 - Sep 24)
Number of Fish Observed49560
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [49560]
Tailrace TDG Percent Exposure Index100.27 %
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 1
5% of Run passedJul 24
10% of Run passedAug 19
50% of Run passedSep 18
90% of Run passedOct 4
95% of Run passedOct 12
Last Day of RunDec 31
Date(s) When Tailrace TDG Percent Crosses 115 %
Mar 16, Apr 30, May 1, Jun 28, Jun 29, Jul 1, Jul 4, Jul 5

1. Total Run Analyzed [97011] is less than total observed during the period [97012]. Only fish observed on days with River Parameter data are analyzed.