Atlantic coastal plain

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The portion of the Coastal Plain along the East Coast of the United States has three sections which cover parts of New York, New Jersey, Pennsylvania, Delaware, Maryland, the District of Columbia, Virginia, North Carolina, South Carolina, Georgia, and Florida. Not shown are the region's two Gulf Coastal Plains and the Mississippi Alluvial Plain.

The Coastal Plain of the United States is the largest physiographic region of the Atlantic Plain and includes 6 physiographic sections along the East Coast and Gulf Coast of the United States:[1]

3a. Embayed section
3b. Sea Island section
3c. Floridian section
3d. East Gulf Coastal Plain
3e. Mississippi Alluvial Plain
3f. West Gulf Coastal Plain

It extends from the New York Bight[2][3] southward to a the Floridian section then westward through the ACF River Basin to the West Gulf Coastal Plain in southern Texas. The province is bordered on the west by the Atlantic Seaboard fall line and the Piedmont plateau, to the east by the Atlantic Ocean.

The province's average elevation is less than 900 meters above sea level and extends some 50 to 100 kilometers inland from the ocean.[citation needed] The coastal plain is generally wet, including many rivers, marsh, and swampland.[citation needed] It is composed primarily of sedimentary rock and unlithified sediments and is primarily used for agriculture.[4]


  1. ^ "Mid-Atlantic Coastal Plain". Retrieved 2010-08-11. The Mid-Atlantic Coastal Plain extends from the Atlantic Ocean, south of Long Island, to the Fall Line, where the hilly Piedmont begins. It is arbitrarily [sic] separated from the South Atlantic Coastal Plain at the Virginia-North Carolina border (with the exception of the Great Dismal Swamp in the southeast corner of Virginia, which is grouped in the southern area). 
  2. ^ Stoffer, Phil; Messina, Paula. "The Atlantic Coastal Plain". Geology and Geography of New York Bight Beaches. 
  3. ^ "South Atlantic Coastal Plain". 
  4. ^ Water table management in the eastern coastal plain