1620 — NGS RD4318 — Vancouver, US

This triangulation station is part of the NGS network, which forms the foundational control for surveying and mapping throughout the United States. Located near Vancouver, Washington, at coordinates 45.63333°, -122.68972°, this trig point serves as a monumented reference for establishing horizontal positions in the Pacific Northwest region. Triangulation stations like this one provide essential control points for surveyors, cartographers, and engineers undertaking construction, boundary determination, and geographic information system development. The NGS maintains these stations to ensure consistency and accuracy across surveying projects of varying scales. Verification and proper documentation of such benchmarks remains critical to the geodetic infrastructure. Current coordinates should be confirmed through modern surveying methods to maintain the reliability of the control network for professional surveying work in the area.

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