WAIALUA SUGAR CO MILL STACK — NGS TU1527 — Honolulu County, US

This trigonometric station is part of the National Geodetic Survey network, which establishes and maintains the fundamental horizontal and vertical control framework for the United States. Trigonometric stations serve as primary reference points for surveying, mapping, and construction projects requiring precise spatial positioning. Located in Honolulu County, Hawaii at coordinates 21.57377° N, 158.12510° W, this point provides essential geodetic control for the Hawaiian Islands region. As a trig station, it was established to support triangulation networks and serves as a benchmark for subsequent surveys and engineering work across the area. The documentation and verification of such control points remains critical infrastructure for accurate surveying, GPS network calibration, and large-scale mapping efforts. Maintaining records of these reference stations ensures the geometric integrity of spatial data throughout the region.

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