ME — NGS RD2933 — Portland, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental control framework for surveying and mapping throughout the United States. Located near Portland, Oregon, at coordinates 45.54274° N, 122.51010° W, this trig point serves as a reference monument for horizontal control. Triangulation stations of this type were historically observed and computed to define precise positions across the nation. Such monuments support accurate land surveys, engineering projects, and cartographic work in their respective regions. The documented coordinates enable surveyors and engineers to reference their local work to the national geodetic datum. Verification and continued documentation of these control points remains valuable for the surveying community. Even when elevation data is absent from historical records, horizontal position data provides essential reference information for modern surveying applications, GPS verification, and maintenance of the nation's spatial reference infrastructure.

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