Description: Original GIS polygon dataset derived from the 1990 Census Bureau's TIGER files. The original scale of the data is 1:100,000 and covers the entire state of Mississippi. Using coding from the TIGER files, this dataset includes only county boundaries. . *** Data was updated in April 2007 using 1:24,000 USGS Digital Raster Graphics. ** Gulf Coastal Boundary was updated in May 2015 by MARIS staff using the guidance MDEQ Office of Geology's Mississippi/Louisiana border based using 1906 Supreme Court decision, MDEQ’s Offshore Mineral Lease map, and the US Bureau of Ocean Energy, Mapping and Boundary Branch's Submerged Lands Act 2011 Boundary.
Copyright Text: U.S. Census, MS Department of Environmental Quality, U.S. Bureau of Ocean Energy Managemnent, MARIS