OPANA — NGS TU1496 — Honolulu County, US

This triangulation station is part of the National Geodetic Survey's network of control points that establish the fundamental geodetic framework for the United States. Located in Honolulu County, Hawaii, at coordinates 21.68611° N, 158.00912° W, this trig point serves as a reference station for surveying and mapping operations throughout the Hawaiian Islands region. Triangulation stations of this type provide precise horizontal control for professional surveyors, engineers, and cartographers conducting work in their vicinity. The point's documented location enables surveyors to establish accurate local coordinate systems and verify survey measurements. The NGS network remains essential infrastructure for civil engineering projects, land boundary determinations, and geographical information systems. Verification and maintenance of benchmark records, including elevation data and physical marker condition, ensure continued utility of these geodetic monuments for current and future surveying applications.

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