Alabama is the thirteenth largest state in the United States with 52,423 square miles (135,775 km²) of total area. 3.19% of the area is water, making Alabama twenty-third in the amount of surface water, also giving it the second largest inland waterway system in the United States. About three-fifths of the land area is a plain with a general downward slope towards the Mississippi River and the Gulf of Mexico. North Alabama has mostly mountains, with the Tennessee River cutting a large valley creating many creeks, streams, rivers, mountains, and lakes.
The states bordering Alabama are Tennessee to the north; Georgia to the east; Florida to the south; and Mississippi to the west. Alabama has coastline at the Gulf of Mexico, in the very southern edge of the state. Alabama ranges in elevation from sea level at "Mobile Bay" to over 1,800 feet (550 m) in the Appalachian Mountains in the northeast. The highest point is "Mount Cheaha", at a height of 2,407 ft (734 m). Alabama's land has 22 million acres (89,000 km2) of forest or 67% of total land area. "Suburban Baldwin County", along the Gulf Coast, is the largest county in the state in both land area and water area.