31 — NGS RD0468 — Portland, US

This trigonometric station is part of the National Geodetic Survey's network of horizontal control points that establish the geometric framework for precise surveying and mapping across the United States. Located near Portland, Oregon at coordinates 45.52728°N, 122.67231°W, this trig point serves as a reference for local and regional surveys requiring accurate horizontal positioning. Trig stations of this type historically provided ground truth for triangulation networks before the advent of satellite-based positioning. Today, they remain valuable benchmarks for verifying modern survey work, establishing local control networks, and ensuring consistency across surveying projects. The documented location of such points contributes to the nation's geodetic infrastructure and supports applications ranging from land boundary determination to infrastructure development. Verification and maintenance of these reference points preserves their utility for current and future surveying professionals.

Sign in to submit a verification from the field.

No verifications yet. Be the first to check this point!