Geography of North Carolina

Relief map of North Carolina showing Blue Ridge Mountains (west), Piedmont Plateau (center), and the coastal plain (east), with Outer Banks along the Atlantic Ocean. 3D Topographical Map of North Carolina

The geography of North Carolina falls naturally into three divisions — the Appalachian Mountains in the west (including the Blue Ridge and Great Smoky Mountains), the central Piedmont Plateau, and the eastern Atlantic Coastal Plain. North Carolina covers 53,819 square miles (139,391 km2) and is 503 miles (810 km) long by 150 miles (241 km) wide. The physical characteristics of the state vary from the summits of the Smoky Mountains, an altitude of near seven thousand feet (2,130 m) in the west, sloping eastward to sea level along the coast and beaches of the Atlantic Ocean.

## Appalachian mountains

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Main article: Western North Carolina

The Western North Carolina mountains as seen from Sunset Rock in Highlands, North Carolina

The mountains of North Carolina may be conveniently classed as four separate chains:

* The Great Smoky Mountains – also called the "Smokies".
* The Blue Ridge Mountains – North Carolina's largest mountain range, the Blue Ridge run across the state in a very tortuous course and often shoot out in spurs of great elevation over the surrounding terrain. The Black Mountains, a subrange of the Blue Ridge, are the highest mountains in the Eastern United States, and culminate in Mount Mitchell at 6,684 feet (2,037.3 m) above sea level.
* The Brushy Mountains – A much smaller and lower mountain range, the Brushy Mountains are located entirely within the state's borders. Often called the "Brushies", they divide, for the greater part of their courses, the waters of the Catawba River and Yadkin River. The Brushy Mountains begin at Hibriten Mountain in Caldwell County and terminate in Pilot Mountain and the Sauratown Mountains in Stokes County. The highest point in the Brushy Mountains is Pores Knob at 2,680 feet (817.4 m) above sea level.

Each of these mountain ranges is marked by distinct characteristics. The Smoky Mountain chain (as contrasted with the Blue Ridge) is more continuous, more elevated, more regular in its direction and height, and rises very uniformly from 5,000 to 6,621 feet (2,018.1 m).

The Blue Ridge is composed of many fragments scarcely connected into a continuous and regular chain. Its higher summits range from 5,000 to nearly 6,700 feet (2,040 m); however, its average elevation is from 3,000 to 4,000 feet (1,200 m). The eastern slopes of the Blue Ridge rise sharply from 1,500 to 4,500 feet (1,370 m) above the terrain to the east; to observers they often appear as a vast, lofty wall running across the state's western horizon. The Brushy Mountain range presents, throughout the greater part of its course, a remarkable uniformity in direction and elevation, many of its peaks rising above 2,000 feet (610 m), and a few rising above 2,500 feet (760 m). The last, the Uwharrie range, sometimes presents a succession of elevated ridges, then a number of bold and isolated knobs, which often appear higher than they actually are, due to the relative flatness of the surrounding terrain.

The tallest of the Appalachian Mountains is Mount Mitchell. Mount Mitchell is also the tallest point east of the Mississippi River. The section enclosed within these limits is in shape somewhat like an ellipse. Its length is about 180 miles (290 km); its average breadth is from twenty to fifty miles (32 to 80 km). It is a high plateau, from the plane of which several high mountains rise, including the Roan, the Grandfather, and the Black. Between the mountains are scenic fertile valleys, plentifully watered by streams.

The mountains lie within the Appalachian–Blue Ridge forests ecoregion and are heavily forested.[1] They often feature thick underbrush, except a few which have prairies on their summits, called balds.

## Piedmont

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Main article: Central North Carolina

The Piedmont plateau forms the central third of the state. The Piedmont is a hilly region and is the most urbanized and densely populated section, containing the state's largest cities. Due to rapid urbanization over the last 30 years, a significant part of the rural area in this region has been transformed into suburbs. In particular, the cities of Charlotte and Raleigh have become major urban centers, with large, diverse, and rapidly growing populations. Elevations in the Piedmont vary from 300 to 1,100 ft (90 to 340 m) above sea level. Isolated mountain ranges are scattered here, mostly on the Western side, but few of them reach over 1,200 feet. The Piedmont lies within the Southeastern mixed forests ecoregion and has many forests.[1] The Piedmont borders the Coastal Plain at the Fall Line. An important resource throughout the Piedmont is tobacco. The original inhabitants of the Piedmont were the Catawba Indians. Europeans started settling in this region around the 1700s.

Within the Piedmont region are the Uwharrie Mountains, which was named after a Native American tribe which once lived in the region. The Uwharries are North Carolina's easternmost mountain range; they are the lowest mountain range in the state. The Uwharries begin in Montgomery County, North Carolina and terminate in the hills of Person County, North Carolina. The highest point in the Uwharries is High Rock Mountain, which is only 1,119 feet (341.1 m) above sea level. However, the Uwharries still rise several hundred feet above the surrounding terrain, which averages only 500 feet (150 m) above sea level.

## Coastal Plain

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Main article: Eastern North Carolina

Cape Fear River

The Coastal Plain is the largest geographic area of the state, and covers roughly 45% of North Carolina. The Coastal Plain begins along the fall line, a line that marks the boundary between metamorphic/igneous rocks of the Piedmont province (to the west) and sedimentary rocks of the Coastal Plain province (to the east). Rapids are common where rivers cross this line. The Fall Line extends through Fayetteville, then Raleigh, and finally through Henderson, North Carolina near the Virginia border. The topography at the fall line drops 150–350 ft (46–107 m) in an eastward direction; while noticeable, the drop is quite gradual and occurs over a width of 1–3 miles (1.6–4.8 km). East of the fall line, most of the coastal plain is relatively flat, with sandy soils ideal for growing tobacco, cotton, soybeans, and melons.

The natural lands are those of the Middle Atlantic coastal forests ecoregion.[1] The rivers of the coastal plain are much wider and deeper than those of the Piedmont or mountains, and flow more slowly. The coastal plain encompasses the two largest landlocked sounds in the United States; Albemarle Sound in the north and Pamlico Sound in the south. Pamlico Sound is larger than the state of Connecticut. The coastal plain is covered by thick forests of pines and other evergreens; due to the sandy soils it is difficult for many deciduous trees to grow.

The easternmost portion of the state contains the Outer Banks, sandy islands that do not have coral reefs to attach to and thus are constantly shifting their locations. The Outer Banks are known as the "Graveyard of the Atlantic" because numerous ships have been wrecked along their beaches and shoals due to storms and strong tides. The Coastal Plain is host to three capes: Cape Hatteras, Cape Lookout, and Cape Fear. Despite the fact that North Carolina has hundreds of miles of beachfront territory, due to the Outer Banks and swampland along the coast the state lacks a good natural harbor. As such, North Carolina never developed a major port city as did neighboring states such as Georgia (Savannah), South Carolina (Charleston), and Virginia (Norfolk). Wilmington, located 15 miles (24 km) up the Cape Fear River, and Morehead City located on the other side of the bridge from Atlantic beach crossing the Bogue Sound remain the state's only two major ports; the Cape Fear river often has to be dredged to keep it open to large merchant marine ships.

The Carolina Sandhills is a 10-35 mi wide physiographic region within the innermost part of the Atlantic Coastal Plain province.[2] The northern extent of the Carolina Sandhills is located near Fayetteville in North Carolina, and the Carolina Sandhills extend south and southwestward into South Carolina and Georgia.

## River systems

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Vacation homes along the coast of Lake Norman, a reservoir along the Catawba River The Neuse River displays many characteristics of eastern North Carolina rivers, including dense vegetation and a wide, slow-flowing course

See also: List of rivers of North Carolina

The French Broad River flows northwest out of North Carolina before eventually reaching the Mississippi River via the Tennessee and Ohio Rivers

Seventeen major river basins have covered at least part of the state of North Carolina. These rivers can be broadly divided into three groups. In the extreme western part of the state, there are rivers that flow in a northwesterly direction, draining into the Gulf of Mexico through the Mississippi River. In the central part of the state, rivers flow generally southward into South Carolina before reaching the Atlantic Ocean. In the eastern part of the state, most of the rivers flow generally in an eastward or southeastward direction, before emptying into one of the sounds that separate the mainland of North Carolina from the Outer Banks.

The divide between the Atlantic and Gulf watersheds, part of a larger divide known as the Eastern Continental Divide, lies not along the Smoky Mountains, the tallest in the state, but rather along the lower Blue Ridge Mountains to the east. The western slopes of the Blue Ridge form the headwaters of the French Broad and the Kanawha Rivers. Through the taller Smoky Mountains, these rivers pass through deep canyons known as water gaps. For example the Hiawassee River and its tributaries follow a series of canyons between Cleveland, Tennessee and Murphy, North Carolina, part of which can be followed driving along the Ocoee Scenic Byway.

The rivers of central North Carolina rise on the eastern slopes of the Blue Ridge. The two largest of these are the Catawba River and the Yadkin River, and they drain much of the Piedmont region of the state.

The major rivers of Eastern North Carolina, from north to south, are: the Chowan, the Roanoke, the Tar, the Neuse and the Cape Fear. Many of those rivers are navigable far inland, owing to their breadth as they traverse the low, flat Atlantic Coastal Plain in the eastern part of the state.

## Lakes

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Among North Carolina's lakes are hundreds of elliptically-shaped lakes or ponds that are referred to as Carolina bays. These interesting and often ecologically-rich lakes occur in many other states but for some reason are highly concentrated in eastern North Carolina. Lake Waccamaw is the largest of the Carolina bays.

While large, natural lakes are rare in North Carolina, excepting the Carolina bays in the eastern part of the state, there are many large reservoirs along the major river systems of the state. Among these are Lake James and Lake Norman on the Catawba River, Falls Lake on the Neuse River, Jordan Lake on the Haw River, as well as Gaston and Kerr Lakes along the Roanoke Rivers. Many of these reservoirs serve as water supplies for North Carolina's urban areas, but also feature recreational facilities including boat ramps, fishing areas, and beaches.

## Climate

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North Carolina map of Köppen climate classification.

Main article: Climate of North Carolina

The climate of North Carolina is mild and equable. This is due in part to its geographical position: midway in the Northern Hemisphere. Also, the high Appalachian chain offers, to some extent, a shield from cold winter winds of the northwest. On the ocean side, in winter, is the moderating influence of the warm Gulf Stream, the current of which sweeps along near its shores.

The result of these combined causes is shown in the character of the seasons. Fogs are frequent, especially during the summer; frosts do not occur until the middle of October; ice forms on raised surfaces at least once a winter; snows are frequently light, seldom remaining on the ground more than two or three days, except in the higher elevations. The average rainfall is about fifty-three inches (1,300 mm), which is pretty uniformly distributed throughout the year.

## References

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1. ^ a b c Olson, D. M, E. Dinerstein; et al. (2001). "Terrestrial Ecoregions of the World: A New Map of Life on Earth". BioScience. 51 (11): 933–938\. doi:10.1641/0006-3568(2001)051[0933:TEOTWA]2.0.CO;2.`{{cite journal}}`: CS1 maint: multiple names: authors list (link)
2. ^ Swezey, C.S., Fitzwater, B.A., Whittecar, G.R., Mahan, S.A., Garrity, C.P., Aleman Gonzalez, W.B., and Dobbs, K.M., 2016, "The Carolina Sandhills: Quaternary eolian sand sheets and dunes along the updip margin of the Atlantic Coastal Plain province, southeastern United States": Quaternary Research, v. 86, p. 271-286; www.cambridge.org/core/journals/quaternary-research

* North Carolina Manual, published biennially by the Department of the Secretary of State since 1941.
* William S. Powell and Jay Mazzocchi, eds. Encyclopedia of North Carolina (2006) 1320pp; 2000 articles by 550 experts on all topics; ISBN 0-8078-3071-2
* James Clay and Douglas Orr, eds., North Carolina Atlas: Portrait of a Changing Southern State (University of North Carolina Press, 1971).

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