<P> The Gulf Coastal Plain extends around the Gulf of Mexico in the Southern United States and eastern Mexico . </P> <P> The plain reaches from the Florida Panhandle, southwest Georgia, the southern two - thirds of Alabama, over most of Mississippi, western Tennessee and Kentucky, into southern Illinois, the Missouri Bootheel, eastern and southern Arkansas, all of Louisiana, the southeast corner of Oklahoma, and easternmost Texas in the United States . It continues along the Gulf in northeastern northeastern and eastern Mexico, through Tamaulipas and Veracruz to Tabasco and the Yucatán Peninsula on the Bay of Campeche . </P> <P> The Gulf Coastal Plain's southern boundary is the Gulf of Mexico in the U.S. and the Sierra Madre de Chiapas in Mexico . On the north, it extends to the Ouachita Highlands of the Interior Low Plateaus and the southern Appalachian Mountains . Its northernmost extent is along the Mississippi embayment (Mississippi Alluvial Valley) as far north as the southern tip of Illinois . To the east the Gulf coastal plain meets the South Atlantic Coastal Plain in southern Georgia along the basin divide between the rivers flowing into the Gulf and those flowing to the Atlantic and south along the Apalachicola River through the Florida panhandle . The flat to rolling topography is broken by many streams, river riparian areas, and marsh wetlands . The Gulf Coastal Plain also extends into southern Mexico . </P>

Where is the gulf coastal plain located on a map
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