53 — NGS RD0478 — Portland, US

This trigonometric station is part of the NGS network, which establishes the foundational geodetic control for the United States. Trig stations serve as precise reference points for surveying, mapping, and engineering projects across local and regional scales. Located near Portland, Oregon, at coordinates 45.53556° N, 122.68528° W, this benchmark contributes to the spatial framework essential for professional surveyors and geospatial professionals. Verification and documentation of such control points remain critical to maintaining survey accuracy and consistency. The NGS network enables surveyors to tie projects to established datums and ensures compatibility between independent surveys across jurisdictional boundaries. These points support infrastructure development, property boundary establishment, and scientific research requiring precise horizontal positioning. Regular examination and reoccupation of trig stations help assess stability and identify any displacement from original monumentation.

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