O 23 — NGS RD0377 — Gresham, US

This triangulation station is part of the National Geodetic Survey's network, which provides the fundamental control framework for surveying and mapping activities across the United States. Located near Gresham, Oregon, at coordinates 45.54194°N, 122.47806°W, this trig point serves as a reference station for establishing accurate horizontal positions in the region. Triangulation stations of this type historically formed the backbone of geodetic control networks, enabling surveyors to extend precise measurements across large areas. Such monuments remain valuable for verification of survey work, boundary establishment, and geospatial database maintenance. Documentation and periodic verification of benchmark locations ensure the integrity of the national geodetic infrastructure and support both public and private surveying activities. This point's continued accessibility and condition documentation contribute to the reliability of surveying and mapping operations throughout the Pacific Northwest.

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