File talk:AtlCoastalPlain.jpg

The image of the Atlantic Coastal Plain displayed on this map is faulty. The USGS [U.S. Geological Survey] clearly states: "The coastal plain along the Gulf of Mexico is considered to be part of the Atlantic Coastal Plain Region." (U.S.G.S., "Landforms of the United States" by John T. Hack, 1997, p. 17). However, it is still permissible to subdivide the Region described in the foregoing quote into two parts: (1) Atlantic Coastal Plain and (2) Gulf Coastal Plain. The dividing line between the two would be the watershed boundary between streams flowing across the coastal plain and into the Atlantic Ocean directly vs. into the Gulf of Mexico. The western-most boundary of the region shown in green on this map does not follow any watershed boundary, meaning that some parts of this version of the Atlantic Coastal Plain drain into the Gulf of Mexico (particularly in Florida). Dr. Donald J. Zeigler, Geographer