6 7 — NGS TU1511 — Waipahu, US

This triangulation station is part of the NGS network, which forms the foundation of the United States' geodetic infrastructure. Located near Waipahu on the island of Hawaii, this trig point serves as a control station for surveying and mapping operations across the region. Triangulation stations of this type have historically provided precise horizontal positional control by establishing known coordinates through geometric measurement networks. The point's documented location at 21.53086°N, 158.04037°W enables surveyors and cartographers to reference local work and maintain consistency with national coordinate systems. Verification and proper documentation of such benchmarks remain essential for ensuring accuracy in cadastral surveys, engineering projects, and geographic databases. The absence of recorded elevation data underscores the importance of field validation and updating of benchmark information as surveying technology and standards evolve.

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