R 45 — NGS RD0613 — Vancouver, US

This triangulation station represents part of the National Geodetic Survey's network of primary control points that establish the geometric framework for surveying and mapping throughout the United States. Located near Vancouver, Washington at coordinates 45.61806° N, 122.62750° W, this trig point serves as a fixed reference for horizontal positioning. Triangulation stations of this class were historically observed and monumented to provide surveyors with reliable, spatially distributed control for local and regional surveys. The point contributes to the broader NGS network, which integrates with other federal and state control networks to support boundary determination, infrastructure development, and geospatial applications. Documentation and verification of such monuments remain valuable for surveying professionals conducting work in the region, particularly when referencing historical surveys or establishing project baselines. Maintenance of accurate records ensures continuity of the geodetic infrastructure.

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