NAPOOPOO SCHOOL FLAGPOLE — NGS TU2524 — Hawaiʻi County, US

This triangulation (trig) station is part of the National Geodetic Survey's network, which establishes the fundamental control framework for surveying and mapping across the United States. Located in Hawaiʻi County, Hawaii, at coordinates 19.47040°N, 155.89938°W, this point serves as a reference for horizontal positioning in its region. Trig stations of this type were historically established to provide precise control points for cadastral surveys, engineering projects, and cartographic work. The NGS network remains integral to modern geodetic infrastructure, supporting GPS validation, surveying operations, and spatial data accuracy. Verification and documentation of such benchmarks preserve their utility for surveying professionals requiring reliable positional references. Accurate coordinates and monument conditions ensure continued value for boundary surveys, construction layout, and geographic information system applications throughout the Hawaiian Islands.

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