6 9 — NGS TU0591 — Waipahu, US

This triangulation station is part of the National Geodetic Survey network, which establishes the fundamental control framework for surveying and mapping throughout the United States. As a trig point, it served historically as a primary control station for triangulation networks, providing accurate horizontal position data for subsequent surveys and mapping efforts. Located in the Waipahu vicinity of Hawaii, this benchmark contributes to the geodetic infrastructure of the Hawaiian Islands. The station's coordinates at 21.52665°, -158.07761° are documented in the NGS database. Verification and proper documentation of such control points remain essential for surveying professionals conducting boundary surveys, engineering projects, and mapping work. Maintaining records of benchmark locations and their physical condition ensures continuity in surveying operations and supports the accuracy of spatial data across generations of surveying practice.

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