OPEN — NGS RD2860 — Multnomah County, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental control framework for surveying and mapping throughout the United States. Located in Multnomah County, Oregon, at coordinates 45.58249° N, 122.53136° W, this trig point serves as a horizontal control reference for regional surveys and engineering projects. Triangulation stations function as fixed monuments that allow surveyors and cartographers to reference precise locations and maintain consistency across multiple surveys. Their positions are determined through geometric relationships established among multiple visible points. As part of the NGS network, this benchmark contributes to the broader geodetic datum that supports accurate land records, infrastructure development, and scientific applications across Oregon and neighboring regions. Verification and documentation of such control points remain essential for maintaining the integrity of surveying work and ensuring compatibility between historical and contemporary measurements.

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