OVERLOOK — NGS RD3106 — Portland, US

This triangulation station is part of the National Geodetic Survey's network, which establishes and maintains the official horizontal control framework for the United States. Located near Portland, Oregon, at coordinates 45.54790°N, 122.68347°W, this trig point serves as a reference station for surveying and mapping activities throughout the region. Trig stations of this type were positioned to provide precise horizontal positioning data for surveyors, engineers, and cartographers. The point's documented location within NGS records supports verification of survey work, property boundary establishment, and large-scale mapping projects. Maintenance and confirmation of such benchmark locations remain valuable for the surveying community, particularly as modern positioning methods are cross-referenced with historical geodetic networks. Surveyors operating in the Portland metropolitan area may reference this station when establishing local control networks.

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