KAHUKU MILL CHIMNEY — NGS TU1480 — Honolulu County, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the foundational control points for the United States' surveying and mapping infrastructure. Located in Honolulu County, Hawaii, at coordinates 21.67893° N, 157.94992° W, this trig point serves as a reference for precise positioning and elevation data used in cadastral surveys, engineering projects, and geographic information systems. Triangulation stations of this type are monumented control points established to enable accurate horizontal positioning across regions. The NGS network remains essential for maintaining spatial data consistency and supporting land surveys, infrastructure development, and scientific applications throughout Hawaii and the nation. Verification and documentation of such benchmarks preserve the integrity of the geodetic datum and ensure continuity for future surveying efforts in the area.

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