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Geography of Maryland

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Geography of Maryland

The U.S. state of Maryland has a varied geography. It has an area of 12,406.68 square miles (32,133.2 km2) and is comparable in overall area with Belgium [11,787 square miles (30,530 km2)]. It is the 42nd largest and 9th smallest state and is closest in size to the state of Hawaii (10,930.98 square miles (28,311.1 km2)), the next smallest state. The next largest state, its neighbor West Virginia, is almost twice the size of Maryland (24,229.76 square miles (62,754.8 km2)). Maryland borders Pennsylvania to the north, Delaware to the northeast, the Atlantic Ocean to the east, and to the west and south by West Virginia and Virginia.

Maryland possesses a variety of topography within its borders, contributing to its nickname America in Miniature. It ranges from sandy dunes dotted with seagrass in the east, to low marshlands teeming with wildlife and large bald cypress near the Chesapeake Bay, to gently rolling hills of oak forests in the Piedmont Region, and pine groves in the Maryland mountains to the west.

Maryland borders four states: it is bounded on its north by Pennsylvania, on its north and east by Delaware, on its east by the Atlantic Ocean, and on its south and west, across the Potomac River, by West Virginia and Virginia. The mid-portion of this latter border is interrupted by the District of Columbia, which sits on land that was originally part of Montgomery and Prince George's counties and including the town of Georgetown, Maryland. This land was ceded to the United States Federal Government in 1790 to form the District of Columbia. (The Commonwealth of Virginia gave land south of the Potomac, including the town of Alexandria, Virginia; however, Virginia retroceded its portion in 1846). The Chesapeake Bay nearly bisects the state and the counties east of the bay are known collectively as the Eastern Shore.

Most of the state's waterways are part of the Chesapeake Bay watershed, with the exceptions of a tiny portion of extreme western Garrett County (drained by the Youghiogheny River as part of the watershed of the Mississippi River), the eastern half of Worcester County (which drains into Maryland's Atlantic coastal bays), and a small portion of the state's northeast corner (which drains into the Delaware River watershed). So prominent is the Chesapeake in Maryland's geography and economic life that there has been periodic agitation to change the state's official nickname to the "Bay State", a nickname that has been used by Massachusetts for decades.

The highest point in Maryland, with an elevation of 3,360 feet (1,020 m), is Hoye Crest on Backbone Mountain, in the southwest corner of Garrett County, near the border with West Virginia, and near the headwaters of the North Branch of the Potomac River. Close to the small town of Hancock, in western Maryland, about two-thirds of the way across the state, less than 2 miles (3.2 km) separates its borders, the Mason–Dixon line to the north, and the northwards-arching Potomac River to the south.

Portions of Maryland are included in various official and unofficial geographic regions. For example, the Delmarva Peninsula is composed of the Eastern Shore counties of Maryland, the entire state of Delaware, and the two counties that make up the Eastern Shore of Virginia, whereas the westernmost counties of Maryland are considered part of Appalachia. Much of the Baltimore–Washington corridor lies just south of the Piedmont in the Coastal Plain, though it straddles the border between the two regions.

Earthquakes in Maryland are infrequent and small due to the state's distance from seismic/earthquake zones. The M5.8 Virginia earthquake in 2011 was felt moderately throughout Maryland. Buildings in the state are not well-designed for earthquakes and can suffer damage easily.

Maryland has no natural lakes, mostly due to the lack of glacial history in the area. All lakes in the state today were constructed, mostly via dams. Buckel's Bog is believed by geologists to have been a remnant of a former natural lake.

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