PORTLAND ARLETA SCHOOL STACK — NGS RD2450

This triangulation station is part of the National Geodetic Survey's primary control network, which establishes the fundamental horizontal reference framework for the United States. Located near Portland, Oregon at coordinates 45.48623°N, 122.59639°W, this trig point serves as a monumented reference station for surveying and mapping activities throughout the region. Triangulation stations of this type historically provided precise positional control through intervisible networks of elevated observation points. Such benchmarks remain valuable for verifying survey accuracy, establishing local coordinate systems, and maintaining consistency in geographic data. Professional surveyors and geospatial professionals rely on documented control points to ensure measurement integrity and to tie modern GPS and surveying work to the established geodetic datum. Verification and proper documentation of these reference monuments support the accuracy and reliability of all downstream surveying and mapping work.

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