WAIALUA — NGS TU1525 — Honolulu County, US

This trigonometric station is part of the National Geodetic Survey's network, which establishes the fundamental control framework for surveying and mapping throughout the United States. Trigonometric stations serve as reference points for horizontal positioning, enabling surveyors, engineers, and cartographers to conduct accurate measurements and establish property boundaries. Located in Honolulu County, Hawaii, this benchmark contributes to geodetic control in the Hawaiian Islands region. The coordinates 21.58877°N, 158.11457°W place it within the state's surveying infrastructure. As a trig point, it has historically supported terrestrial surveys, though modern positioning methods now complement traditional triangulation networks. Verification and documentation of such control points remain valuable for maintaining survey accuracy, validating historical data, and ensuring consistency across projects. This point's presence in the NGS registry facilitates professional surveying activities requiring established positional references.

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