The North Carolina Geodetic Survey developed the GIS data set, County Boundaries, surveyed to facilitate planning, siting and impact analysis in the 100 individual counties of North Carolina. This file shows some of the boundaries of counties which have a completed boundary survey, but the majority of lines have not been surveyed. Also, some boundaries cannot be surveyed in cases where boundaries coincide with river centers. Refer to the 'County Boundary as Lines' to find out the source of the lines using the field attribute for 'DESC'. Most of the lines currently are from the DOT county maps which originally come from USGS but might have been updated by the county parcel maps.

Datasets developed under the CTP Process Improvement initiative are system-wide data and require verification prior to use. These datasets are compiled and grouped from numerous authoritative sources previously verified by the NCDOT Atlas initiative, to be used in long-range planning and project development in the State of North Carolina by its planning partners and resource agencies.