PUMP — NGS RD2870 — Portland, US

This triangulation station is part of the National Geodetic Survey's network, which provides fundamental horizontal control for surveying and mapping activities throughout the United States. Located near Portland, Oregon at 45.58035°, -122.55789°, this trig point serves as a reference monument for establishing accurate positions of subsidiary survey marks and geographic features across the region. Triangulation stations of this type were historically established through intervisible networks connecting prominent locations. Such points remain valuable for verifying contemporary survey work, GPS networks, and ensuring consistency in local coordinate systems. The documented coordinates allow surveyors and engineers to reference reliable positions for property surveys, infrastructure projects, and geographic information system development. Continued maintenance and verification of geodetic control points supports the accuracy and integrity of surveying activities and spatial data throughout the area. Professional surveyors are encouraged to report the current condition and accessibility of such monuments to NGS.

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