TROUTDALE APT STA B — NGS RD2369

This triangulation station is part of the National Geodetic Survey's network, which establishes and maintains the primary framework for surveying and mapping across the United States. Located near Troutdale, Oregon, at coordinates 45.54971° N, 122.40573° W, this trig point serves as a control station for horizontal positioning in the Portland metropolitan region. Triangulation stations like this mark monumented ground locations with known, precisely determined geodetic positions. They function as reference points for surveyors conducting property surveys, engineering projects, and cartographic work. The ellipsoidal elevation of -13.8 meters reflects the point's vertical position relative to the geodetic datum. Verification and documentation of such control points remain essential for maintaining survey accuracy and enabling interoperability among surveying professionals across jurisdictions. This point contributes to the broader geodetic infrastructure supporting infrastructure development and geographic information systems throughout the region.

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