DOLB — NGS RD0354 — Portland, US
USNGStrigunknown#5527
Latitude
45.566944°
Longitude
-122.590000°
Ortho h
21.46 m
Verifications
0
Last checked
Never
This trigonometric station is part of the National Geodetic Survey's network of control points that forms the foundation of the United States' surveying and mapping infrastructure. Located near Portland, Oregon at coordinates 45.56694° north latitude and 122.59000° west longitude, this trig point serves as a precisely positioned reference for surveyors and engineers conducting local cadastral, engineering, and mapping projects. Trigonometric stations like this are established to provide accurate horizontal control across regions, enabling reliable coordinate determination for subsequent surveys. The point's location in the Portland metropolitan area makes it valuable for urban and regional surveying applications. Documentation and periodic verification of such control points remain essential for maintaining the integrity of the nation's geodetic framework and ensuring consistency across survey work.
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