IRVING — NGS RD3285 — Portland, US

This triangulation station is part of the National Geodetic Survey's network of control points that form the backbone of the United States' geodetic infrastructure. Located near Portland, Oregon, at coordinates 45.54695° N, 122.65751° W, this trig point serves as a horizontal reference for surveying and mapping activities throughout the region. Triangulation stations of this type were established to provide accurate positional control for cadastral surveys, engineering projects, and geographic data collection. The point's documented location enables surveyors to verify their work and maintain consistency across multiple projects. Regular documentation and verification of such benchmarks ensures the integrity of local and national spatial reference systems. Professional surveyors rely on these established control points for precision work in construction, land development, and cartographic applications.

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