1876 — NGS RD2919 — Portland, US

This triangulation station is part of the National Geodetic Survey network, which establishes the fundamental horizontal control framework for the United States. Trig stations of this classification serve as primary reference points for surveying, mapping, and engineering projects throughout their respective regions. Located near Portland, Oregon at coordinates 45.51296° N, 122.59305° W, this benchmark contributes to regional geodetic accuracy and supports civil infrastructure development. Such control points remain valuable for verifying modern survey work, validating GPS observations, and maintaining consistency across spatial datasets. The continued documentation and recovery of established benchmarks ensures institutional memory of the geodetic network and allows practitioners to reference historical survey efforts. Professional surveyors regularly consult these points to maintain positional standards and quality assurance in their field operations.

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