SCHOFIELD MAGNETIC — NGS TU0654 — Waipahu, US

This triangulation station is part of the National Geodetic Survey's horizontal control network, which establishes precise positional reference points across the United States and its territories. Located near Waipahu on the island of Oahu, Hawaii, this trig point serves as a fundamental control station for surveying and mapping activities in the region. Triangulation stations of this type were established to provide accurate horizontal coordinates for subsequent surveying work, infrastructure development, and cartographic purposes. The coordinates 21.48051°N, 158.02585°W define its horizontal position within the geodetic datum framework. Documentation and verification of such benchmarks remain valuable for surveyors conducting property surveys, engineering projects, and maintenance of the national spatial reference system. Regular inspection and recovery of these points helps preserve the integrity of Hawaii's geodetic infrastructure.

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