MACKIE — NGS RD2800 — Clark County, US

This triangulation station is part of the NGS network, which establishes the fundamental geodetic control for the United States. Trig points serve as primary reference stations for horizontal positioning, enabling surveyors and engineers to tie their local measurements into the national coordinate system. Located in Clark County, Washington, this benchmark provides essential positional data for surveying activities, mapping, and engineering projects throughout the region. The geodetic coordinates 45.68346°N, 122.53846°W define its precise location within the national datum. Documentation and periodic verification of such control points are critical to maintaining the integrity of the surveying infrastructure. As established reference stations, trig points like this one support cadastral surveys, construction projects, and scientific applications requiring accurate horizontal positioning. Surveyors rely on these verified stations to ensure consistency and accuracy in their work.

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