SOH 40 — NGS DR2102 — Kapolei, US

This NGS trigonometric station is located in the Kapolei area of Oahu, Hawaii, at latitude 21.33733° north and longitude 158.03197° west. As part of the National Geodetic Survey's network, this triangulation point serves as a fundamental control station for establishing accurate horizontal positions across the Hawaiian Islands. Trig stations of this class historically provided precise reference points for surveying, mapping, and engineering projects. The NGS network remains essential infrastructure for maintaining the National Spatial Reference System. Documentation and verification of such benchmark locations are critical for surveyors and engineers conducting work in Hawaii, ensuring consistency in coordinate systems and supporting cadastral surveys, construction projects, and geographic information systems. The geodetic value of this station depends on its continued preservation and accessibility to the surveying community.

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