Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2024
ProjectLower Monumental
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 21 - Nov 14)
Total Number of Fish Observed210
Percent of Total Run Analyzed [Number Observed]100 % [210]
Tailrace TDG Percent Exposure Index119.73 %
Percent of Fish Exposed [Number Exposed]50.9 % [107]
Number of Days Fish Exposed20
Middle 80% of Run Period (Apr 20 - Jun 3)
Number of Fish Observed172
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [172]
Tailrace TDG Percent Exposure Index120.05 %
Percent of Fish Exposed [Number Exposed]53.4 % [92]
Number of Days Fish Exposed12
Middle 50% of Run Period (Apr 28 - May 21)
Number of Fish Observed115
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [115]
Tailrace TDG Percent Exposure Index120.66 %
Percent of Fish Exposed [Number Exposed]78.2 % [90]
Number of Days Fish Exposed11
Run Dates
First Day of RunMar 21
5% of Run passedApr 17
10% of Run passedApr 20
50% of Run passedMay 17
90% of Run passedJun 3
95% of Run passedJun 9
Last Day of RunNov 14
Date(s) When Tailrace TDG Percent Crosses 120 %
Apr 16, Apr 18, Apr 27, May 1, May 13, May 21, May 30, Jun 1, Jun 4, Jun 6, Jun 9, Jun 12, Jun 13, Jun 14, Jul 3, Jul 4, Sep 30, Oct 1