WAIAHILAHILA — NGS TU1470 — Honolulu County, US

This triangulation station is part of the NGS network, which establishes the primary geodetic framework for the United States. Located in Honolulu County, Hawaii, at coordinates 21.59213° North, 157.91315° West, this trig point serves as a reference station for horizontal control and surveying operations across the islands. Triangulation stations function as precisely positioned monuments that support mapping, engineering surveys, and boundary determinations. Their documented coordinates enable surveyors and cartographers to reference subsequent work to a common, accurate datum. Verification and proper documentation of such benchmarks remain essential for maintaining the integrity of geodetic networks. Even points with incomplete metadata, such as this station's unreported elevation, contribute to the broader survey infrastructure when their horizontal position is verified and preserved in permanent records.

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