5401 — NGS RD4301 — Vancouver, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental horizontal control framework for the United States. Located near Vancouver, Washington at coordinates 45.66139°N, 122.55861°W, this trig point serves as a reference monument for surveying and mapping activities in the Pacific Northwest region. Triangulation stations such as this provide precise geodetic control essential for accurate surveying, engineering projects, and spatial data collection. As part of NGS's broader infrastructure, this benchmark contributes to the nation's consistent coordinate system and supports both public and private sector surveying work. Verification and documentation of existing geodetic monuments remain valuable for maintaining survey accuracy and enabling future professionals to access reliable reference points. Regular confirmation of such stations helps ensure the integrity of regional surveying networks and supports continued mapping efforts throughout the area.

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