U 389 — NGS FR0370 — Coconino County, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental horizontal and vertical control framework for the United States. Trigonometric stations of this class historically served as primary control points for large-scale surveys and mapping projects through triangulation methods. Located in Coconino County, Arizona, at coordinates 35.95333° N, 112.78472° W, this benchmark contributes to regional geodetic infrastructure across the southwestern United States. Trig stations function as monumented reference points with precisely determined positions, enabling surveyors and engineers to conduct accurate local surveys, establish property boundaries, and support infrastructure development. Documentation and periodic verification of such control points remain valuable to the surveying profession. These stations provide reliable tie-points for modern positioning techniques and maintain continuity with historical survey networks. Proper maintenance and registry of these references supports accurate spatial data collection across both public and private surveying activities.

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