PHYSIOGRAPHY
Maryland is divided into three provinces with progressively higher altitudes from east to west:
Coastal Plain province extends from Atlantic Ocean to Fall Line, a natural line running from Delaware boundary, around head of Chesapeake Bay, through Baltimore, and southwest to Washington, where streams drop to lower land level;
Piedmont or "Foothill" province extends from Fall Line to base of Catoctin Mountains;
Appalachian province extends from base of Catoctin Mountains to western boundary of State.
Mean elevation, 350 feet.
Maximum elevation, 3,360 feet at Backbone Mountain.
Maryland Manual On-Line
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