11200 — NGS RD4313 — Clark County, US

This trigonometric station is part of the National Geodetic Survey's network of control points that form the foundation of the United States' surveying and mapping infrastructure. Located in Clark County, Washington, at coordinates 45.69333° N, 122.55778° W, this trig point serves as a precisely positioned reference for establishing horizontal control in surveying operations and geographic information systems applications. Trigonometric stations of this type were historically established to support large-scale geodetic surveys and continue to provide valuable control for modern surveying work. The point's documented coordinates enable surveyors, engineers, and mapping professionals to reference their local measurements to the national geodetic datum. Verification and maintenance of such benchmark documentation remains important for preserving the integrity of the control network and supporting continued reliance on these reference points for professional surveying activities in the region.

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