MANLEY — NGS AA3424 — Douglas County, US

This triangulation station is part of the NGS network, which establishes the fundamental geodetic control for the United States. Located in Douglas County, Colorado, at coordinates 39.28946°N, 104.66471°W, this trig point serves as a reference for surveying, mapping, and geospatial projects across the region. The ellipsoidal elevation of 2054.6 meters reflects the point's position within Colorado's Front Range transition zone. As a triangulation station, this benchmark historically supported distance and angle measurements for large-scale surveys and continues to provide horizontal control data. Modern surveyors and GIS professionals verify and document such points to maintain positional accuracy and coordinate system consistency. Regular confirmation of benchmark stability and coordinates ensures reliable spatial reference data for engineering, construction, and land management applications throughout the surveyed area.

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