5 4 — NGS TU0490 — Honolulu County, US

This trigonometric station is part of the National Geodetic Survey's network that establishes the fundamental control framework for surveying and mapping across the United States. Trig stations serve as monumented reference points used to determine precise horizontal positions and elevations for subsequent surveys and mapping projects. Located in Honolulu County, Hawaii, this point contributes to geodetic control in the Hawaiian Islands, a region requiring accurate reference data for surveying, engineering, and infrastructure development. As with all NGS control points, verification and proper documentation of this benchmark ensure its continued utility for professional surveyors and mapping professionals. Periodic inspection and confirmation of such monuments maintains the integrity of the national geodetic network and supports accurate coordinate determination for downstream surveying activities throughout the region.

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