1436 — NGS RD0461 — Portland, US

This triangulation (trig) station is part of the National Geodetic Survey's fundamental control network, which establishes the geometric framework for surveying and mapping activities throughout the United States. Located near Portland, Oregon, at coordinates 45.52278°N, 122.67083°W, this point serves as a reference for horizontal position control in its region. Trig stations like this one were historically established through inter-visibility networks to support large-scale surveys and mapping projects. Modern surveying, GIS applications, and infrastructure development depend on accurate knowledge of such reference points' locations and accessibility. Verification and documentation of benchmark locations remain valuable for surveyors conducting boundary work, engineering surveys, and quality control of spatial data. Maintaining comprehensive records of these control points supports the continuity and reliability of the nation's geodetic infrastructure.

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