 Piedmont (ecoregion)

The Piedmont ecoregion is a United States ecoregion designated by the U.S. Environmental Protection Agency (EPA) and the Commission for Environmental Cooperation (CEC).Considered the nonmountainous portion of the old Appalachian Highlands by physiographers, the northeast-southwest trending Piedmont ecoregion comprises a transitional area between the mostly mountainous ecoregions of the Appalachians to the northwest and the relatively flat coastal plain to the southeast.