S 13 — NGS TU0639 — Waipahu, US

This trigonometric station is part of the National Geodetic Survey network, which establishes and maintains the fundamental geodetic control for the United States. Trigonometric stations serve as primary control points for surveying, mapping, and engineering projects requiring high-precision positional reference. Located near Waipahu on the island of Oahu, Hawaii, this benchmark contributes to the geodetic framework supporting both civilian and government surveying activities across the Hawaiian Islands. The station's coordinates are referenced to the national geodetic datum. Verification and documentation of such control points remain essential for maintaining the integrity of survey networks. Professional surveyors depend on accurately positioned benchmarks to ensure consistency in property surveys, infrastructure development, and scientific investigations. Regular confirmation of these reference points' stability and accessibility helps preserve their utility for future surveying operations.

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