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 - Jun 30)
Total Number of Fish Observed137
Percent of Total Run Analyzed [Number Observed]100 % [137]
Tailrace TDG Percent Exposure Index118.22 %
Percent of Fish Exposed [Number Exposed]17.5 % [24]
Number of Days Fish Exposed10
Middle 80% of Run Period (Apr 11 - May 21)
Number of Fish Observed114
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [114]
Tailrace TDG Percent Exposure Index118.76 %
Percent of Fish Exposed [Number Exposed]19.2 % [22]
Number of Days Fish Exposed8
Middle 50% of Run Period (Apr 17 - Apr 23)
Number of Fish Observed74
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [74]
Tailrace TDG Percent Exposure Index118.31 %
Percent of Fish Exposed [Number Exposed]6.7 % [5]
Number of Days Fish Exposed1
Run Dates
First Day of RunMar 21
5% of Run passedMar 31
10% of Run passedApr 11
50% of Run passedApr 21
90% of Run passedMay 21
95% of Run passedJun 9
Last Day of RunJun 30
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