11730 — NGS RD4240 — Vancouver, US

This trigonometric station is part of the National Geodetic Survey's network of control points establishing the geometric foundation for mapping and surveying across the United States. Located near Vancouver, Washington at coordinates 45.60331°, -122.55147°, this trig point serves as a fixed reference for determining accurate positions and elevations in the Pacific Northwest region. Trigonometric stations like this one function as primary control monuments, enabling surveyors and geospatial professionals to reference local measurements to the national coordinate system. The point's documented geographic position makes it valuable for boundary surveys, engineering projects, and spatial data collection activities throughout the area. Verification and maintenance of such benchmarks remain important to the surveying profession, as these monuments provide essential geometric control for both public infrastructure and private surveying work. Accurate documentation of their locations and conditions supports the continued utility of the NGS network.

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