CSL 22 — NGS AA8582 — St. Louis, US

This triangulation station is part of the National Geodetic Survey's horizontal control network, which forms the foundational framework for surveying and mapping activities across the United States. Located near St. Louis, Missouri, at coordinates 38.73438° N, 90.21166° W, this trig point serves as a reference station for precision surveying projects throughout the region. The ellipsoidal elevation of 101.8 meters establishes vertical control when integrated with relevant datum information. Trigonometric stations of this classification provide monumented positions of known accuracy for surveyors, engineers, and cartographers conducting land surveys, infrastructure development, and geographic information system applications. Verification and documentation of such control points remain essential for maintaining the integrity of the national spatial reference system and ensuring consistency in survey-derived measurements across jurisdictions and time periods.

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