ANTENNA HUB — NGS TU0994 — Waipahu, US

This triangulation station is part of the National Geodetic Survey's network of control points that establishes the fundamental reference framework for surveying and mapping across the United States. Located near Waipahu on the island of Oahu, Hawaii, this trig point serves as a fixed reference for horizontal position control at coordinates 21.52120° N, 157.99701° W. Triangulation stations of this type were historically established to provide monumented reference points for surveyors conducting boundary surveys, engineering projects, and cartographic work. As part of the NGS network, this point contributes to Hawaii's geodetic infrastructure and supports modern positioning activities including GPS and survey operations. Documentation and periodic verification of such benchmarks remain valuable for maintaining survey accuracy and ensuring consistency in spatial reference systems. The preservation and accessibility of these control points support professional surveying practice throughout the region.

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