BAL — NGS RD2325 — Gresham, US

This triangulation station is part of the National Geodetic Survey's network of control points that establish the horizontal reference framework for the United States. Located near Gresham, Oregon, at coordinates 45.51919°N, 122.45858°W, this trig point serves as a fixed reference for surveying, mapping, and engineering projects across the region. Triangulation stations of this type were established to provide accurate positional control through intervisible networks of marked points. The benchmark's documented location enables surveyors and engineers to tie local measurements to the national geodetic datum. Verification and maintenance of such control points remains important for ensuring consistency and accuracy in modern surveying activities, including construction, infrastructure development, and geographic information systems. The documented coordinates provide essential reference data for professional surveying work in the Willamette Valley area.

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