KAPUAI OLD 1927 — NGS TU1645 — Kapolei, US

This triangulation station is part of the National Geodetic Survey's primary control network, which establishes the foundational reference framework for surveying and mapping throughout the United States. Located near Kapolei on the island of Oahu, Hawaii, at coordinates 21.37643° N, 158.07238° W, this trig point serves as a monumented reference for horizontal position control. Triangulation stations of this type have historically provided precise geometric relationships across regions, enabling surveyors and engineers to conduct accurate boundary determinations, infrastructure development, and spatial data collection. The preservation and periodic verification of such benchmarks remain essential for maintaining survey accuracy and consistency. Documentation of this point's current condition and accessibility supports professional survey work and contributes to the broader geodetic control infrastructure supporting Hawaiian surveying activities.

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