ALEI — NGS TU1571

This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental horizontal and vertical control framework for surveying and mapping throughout the United States. As a trig point, this station served as a reference monument for triangulation measurements and higher-order geodetic work. Located in Hawaii at approximately 21.57°N, 158.24°W, the point contributes to the regional survey network in the Pacific. Trig stations of this class are essential for establishing precise positional control across large areas, supporting land surveys, engineering projects, and cartographic efforts. The elevation value for this point remains undocumented in available records. Verification and proper documentation of benchmark locations remain important for surveying professionals relying on historical control networks and for understanding the geodetic infrastructure supporting modern positioning standards.

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