Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Spring/Summer Chinook 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 24)
Total Number of Fish Observed146
Percent of Total Run Analyzed [Number Observed]100 % [146]
Tailrace TDG Percent Exposure Index118.08 %
Percent of Fish Exposed [Number Exposed]17.8 % [26]
Number of Days Fish Exposed11
Middle 80% of Run Period (Apr 12 - Jun 9)
Number of Fish Observed118
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [118]
Tailrace TDG Percent Exposure Index118.85 %
Percent of Fish Exposed [Number Exposed]20.3 % [24]
Number of Days Fish Exposed9
Middle 50% of Run Period (Apr 17 - Apr 27)
Number of Fish Observed76
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [76]
Tailrace TDG Percent Exposure Index118.35 %
Percent of Fish Exposed [Number Exposed]7.8 % [6]
Number of Days Fish Exposed2
Run Dates
First Day of RunMar 21
5% of Run passedMar 31
10% of Run passedApr 12
50% of Run passedApr 21
90% of Run passedJun 9
95% of Run passedJul 3
Last Day of RunNov 24
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