Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2017
ProjectBonneville
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 29 - Jul 21)
Total Number of Fish Observed2564
Percent of Total Run Analyzed [Number Observed]100 % [2564]
Tailrace TDG Percent Exposure Index123.59 %
Percent of Fish Exposed [Number Exposed]96.3 % [2470]
Number of Days Fish Exposed79
Middle 80% of Run Period (Apr 29 - Jun 3)
Number of Fish Observed2067
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [2067]
Tailrace TDG Percent Exposure Index124.55 %
Percent of Fish Exposed [Number Exposed]100 % [2067]
Number of Days Fish Exposed36
Middle 50% of Run Period (May 5 - May 27)
Number of Fish Observed1339
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [1339]
Tailrace TDG Percent Exposure Index124.94 %
Percent of Fish Exposed [Number Exposed]100 % [1339]
Number of Days Fish Exposed23
Run Dates
First Day of RunMar 29
5% of Run passedApr 23
10% of Run passedApr 29
50% of Run passedMay 16
90% of Run passedJun 3
95% of Run passedJun 11
Last Day of RunJul 21
Date(s) When Tailrace TDG Percent Crosses 115 %
Jun 4, Jun 9, Jul 8, Jul 9