SOH 91 — NGS DR2164

This triangulation station is part of the National Geodetic Survey's geodetic control network, which establishes the authoritative reference framework for surveying and mapping activities throughout the United States. As a trig point, this station served as a control vertex for horizontal positioning during traditional triangulation surveys. Located at 21.57792°N, 158.22322°W in Hawaii, the station contributes to the archipelago's geodetic infrastructure. Trig stations of this type were historically occupied to extend precise horizontal control across regions through intervisible networks of points. Documentation and verification of such benchmarks remain valuable for surveyors and geospatial professionals conducting boundary surveys, engineering projects, and geographic information system work. The location and condition of these reference points should be field-verified to assess their continued utility for modern surveying applications, particularly given the transition toward satellite-based positioning systems.

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