HONOULIULI 1873 — NGS TU1653 — Waipahu, US

This triangulation station is part of the National Geodetic Survey's horizontal control network, which establishes the foundation for surveying and mapping throughout the United States and its territories. Located near Waipahu on the Island of Oahu, Hawaii, at coordinates 21.36952° N, 158.02207° W, this trig point serves as a reference for determining accurate positions of other survey points and features across the region. Triangulation stations of this type historically provided essential control for large-scale surveying operations and continue to have value for verification of modern positioning networks. Documentation and preservation of such benchmarks remain important for maintaining the integrity of geodetic infrastructure, particularly in areas where historical survey networks support ongoing mapping, engineering, and land management activities. Surveyors and geodetic professionals benefit from confirming the continued existence and condition of established control points.

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