PUPU 1 — NGS DR2317 — Kapolei, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental horizontal control framework for the United States. Located near Kapolei on the island of Oahu, Hawaii, at coordinates 21.31189° N, 158.02144° W, this trig point serves as a reference monument for surveying and mapping operations across the Hawaiian Islands region. Triangulation stations of this type were historically established to create precise geodetic networks through intervisible point observations. This benchmark contributes to the NGS database and supports land surveys, engineering projects, and geospatial applications throughout Hawaii. Verification and documentation of such control points remain valuable for maintaining survey accuracy and ensuring consistency in subsequent measurements. Surveyors and GIS professionals rely on established benchmarks to validate their work and preserve long-term spatial reference integrity.

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