Z 13 — NGS TU0613 — Kapolei, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental geodetic control for the United States. Located near Kapolei on the island of Oahu, Hawaii, at coordinates 21.39667°N, 158.16389°W, this trig point serves as a reference for horizontal positioning and surveying operations throughout the region. Triangulation stations of this type provide essential control points for mapping, engineering surveys, and cadastral work. The NGS network enables surveyors and engineers to reference their local surveys to a consistent national datum, ensuring spatial accuracy and compatibility across projects. Documentation and verification of such benchmarks remain valuable for maintaining geodetic infrastructure integrity. Even where elevation data is not recorded, the horizontal coordinates provide critical reference value for professional surveying activities in Hawaii.

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