STATE SURVEY 9 20 1969 — NGS TU1612 — Waipahu, US

This triangulation station is part of the NGS network, which establishes the geodetic framework for surveying and mapping throughout the United States. Located near Waipahu on the island of Oahu, Hawaii, this trig point served as a control station for precise horizontal positioning in the Hawaiian Islands region. Trig stations of this type were monumented to provide accurate reference coordinates for surveyors conducting cadastral surveys, infrastructure projects, and geographic documentation. The coordinates 21.37470°N, 158.00249°W place this point in the central Oahu area. Verification and documentation of such control points remain valuable for professionals who maintain survey networks, conduct boundary surveys, or validate modern positioning technologies against historical geodetic infrastructure. This station contributes to the continuity and reliability of Hawaii's surveying framework.

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