HO 1 — NGS TU0671 — Waipahu, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental geodetic framework for the United States. Trig stations of this classification serve as primary control points for surveying, mapping, and engineering projects requiring accurate horizontal positioning. Located in the Waipahu area of Oahu, Hawaii, at coordinates 21.31468°N, 157.99867°W, this benchmark contributes to regional geodetic coverage across the Hawaiian Islands. Such control points are essential for maintaining consistency in survey networks and supporting critical infrastructure development. Documentation and verification of existing triangulation stations remain valuable for the surveying community, as these monuments provide established reference geometry for local and regional projects. Professionals utilizing this point should verify current monumentation status and accessibility before field operations.

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