SOH 47 — NGS DR2109 — Waipahu, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the authoritative geodetic framework for the United States. Trig stations serve as primary control points for surveying and mapping activities across regions. Located near Waipahu on the island of Oahu, Hawaii, at coordinates 21.43311° N, 158.05744° W, this benchmark contributes to Hawaii's horizontal geodetic control infrastructure. Such points are essential for accurate surveying, engineering projects, and GIS applications throughout the Hawaiian islands. Verification and documentation of these stations maintain the integrity of the control network, ensuring reliable positional references for future surveying work. Professional surveyors and geodetic practitioners depend on accessible, well-documented benchmarks to support precise measurements and coordinate transformations across projects.

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