What year marked the establishment of SPC 83, a coordinate system for Texas?

The establishment of SPC 83, which stands for the State Plane Coordinate System of 1983, represents a significant advancement in the way geographic data is managed and utilized in Texas. This coordinate system was designed to provide a more precise method of mapping and surveying, accommodating the particular geographic considerations of the state.

SPC 83 is based on the North American Datum of 1983 (NAD83) and offers a framework for consistency in measurements and calculations across the state, making it easier for surveyors and engineers to work with geographic data. The implementation of this system enabled more accurate spatial analysis and helped standardize geospatial data in various applications, including land development, environmental studies, and urban planning.

The other years mentioned do not correspond to the introduction of this particular coordinate system: 1933 predates modern developments in coordinate systems, while 1963 and 2022 fall outside the context in which SPC 83 was established. Hence, recognizing 1986 as the correct year emphasizes the importance of accurate geospatial frameworks in surveying practices in Texas.