DR U — NGS DH9138 — Denver, US

This triangulation station is part of the NGS network, which provides the foundational geodetic control for surveying and mapping throughout the United States. Triangulation (trig) stations serve as precise reference points established through angular measurements and distance observations, enabling surveyors and cartographers to accurately position features across large areas. Located in the vicinity of Denver, Colorado, this benchmark contributes to regional control networks used for engineering projects, land surveys, and geographic information systems. The coordinates 39.85417° N, 104.63111° W establish its horizontal position within the national datum framework. Verification and documentation of such geodetic monuments remain valuable for maintaining survey accuracy, as they provide independent ground control for validating modern positioning technologies and ensuring consistency in spatial data across jurisdictions and projects.

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