Y 451 — NGS DJ8156 — Denver, US

This triangulation station is part of the NGS network, which establishes the primary horizontal control framework for the United States. Trig points serve as fundamental reference markers for large-scale surveying, mapping, and engineering projects across the country. Located near Denver, Colorado at coordinates 39.77152°N, -104.84729°W, this station contributes to regional geodetic infrastructure in the Front Range area. Such monuments enable surveyors and engineers to tie local measurements to the national coordinate system with defined accuracy. Verification and documentation of these control points remains essential for maintaining survey integrity and supporting infrastructure development, cadastral records, and scientific applications. The NGS registry preserves institutional knowledge regarding these stations, facilitating their continued use in professional surveying practice and public works projects.

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