WAIALUA 2 — NGS TU1526 — Honolulu County, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the authoritative horizontal and vertical control framework for the United States. Located in Honolulu County, Hawaii, at coordinates 21.58904°N, 158.11873°W, this trig point serves as a fundamental reference for surveying, mapping, and engineering projects across the islands. Triangulation stations like this one were historically occupied and observed to create geometric networks for precise positioning. At an ellipsoidal elevation of 18.6 meters, this benchmark contributes to the spatial reference infrastructure essential for cadastral surveys, infrastructure development, and scientific applications. Verification and documentation of such control points remain valuable for surveyors conducting work in the region, ensuring consistency with established geodetic datums and supporting the continuity of Hawaii's survey network.

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