VANPORT — NGS RD1580 — Vancouver, US
USNGStrigunknown#5335
Latitude
45.621605°
Longitude
-122.662298°
Ellipsoidal h
-13.72 m
Ortho h
9.07 m
Verifications
0
Last checked
Never
This trigonometric station is part of the National Geodetic Survey's horizontal control network, which establishes the foundational reference framework for surveying and mapping throughout the United States. Located near Vancouver, Washington, at coordinates 45.62161° N, 122.66230° W, this trig point serves as a precisely positioned control station for local and regional surveying operations. The ellipsoidal elevation of -13.7 meters reflects the point's position relative to the WGS 84 reference ellipsoid. Trig stations of this type provide essential ground truth for surveyors, engineers, and cartographers conducting boundary surveys, infrastructure projects, and spatial data collection. Documentation and periodic verification of such benchmarks ensures the integrity of the geodetic control network and maintains compatibility with modern positioning technologies and legacy survey records across the region.
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