Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2017
ProjectLower Monumental
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 21 - Dec 15)
Total Number of Fish Observed7457
Percent of Total Run Analyzed [Number Observed]97.8 % [7293]1
Tailrace TDG Percent Exposure Index122.44 %
Percent of Fish Exposed [Number Exposed]99.9 % [7291]
Number of Days Fish Exposed94
Middle 80% of Run Period (Apr 18 - May 29)
Number of Fish Observed6141
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [6141]
Tailrace TDG Percent Exposure Index122.47 %
Percent of Fish Exposed [Number Exposed]100 % [6141]
Number of Days Fish Exposed42
Middle 50% of Run Period (May 1 - May 21)
Number of Fish Observed3802
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [3802]
Tailrace TDG Percent Exposure Index123.57 %
Percent of Fish Exposed [Number Exposed]100 % [3802]
Number of Days Fish Exposed21
Run Dates
First Day of RunMar 21
5% of Run passedApr 13
10% of Run passedApr 18
50% of Run passedMay 13
90% of Run passedMay 29
95% of Run passedJun 4
Last Day of RunDec 15
Date(s) When Tailrace TDG Percent Crosses 115 %
Jun 25, Jun 26, Jul 3, Jul 5, Jul 9, Jul 12, Aug 11, Aug 12, Aug 14, Aug 16, Aug 17

1. Total Run Analyzed [7293] is less than total observed during the period [7457]. Only fish observed on days with River Parameter data are analyzed.