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United States Geography 2010
http://www.workmall.com/wfb2010/united_states/united_states_geography.html
SOURCE: 2010 CIA WORLD FACTBOOK AND OTHER SOURCES

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Page last updated on February 1, 2010

Location:
North America, bordering both the North Atlantic Ocean and the North Pacific Ocean, between Canada and Mexico

Geographic coordinates:
38 00 N, 97 00 W

Map references:
North America

Area:
total: 9,826,675 sq km
land: 9,161,966 sq km
water: 664,709 sq km
note: includes only the 50 states and District of Columbia

Area - comparative:
about half the size of Russia; about three-tenths the size of Africa; about half the size of South America (or slightly larger than Brazil); slightly larger than China; more than twice the size of the European Union

Land boundaries:
total: 12,034 km
border countries: Canada 8,893 km (including 2,477 km with Alaska), Mexico 3,141 km
note: US Naval Base at Guantanamo Bay, Cuba is leased by the US and is part of Cuba; the base boundary is 28 km

Coastline:
19,924 km

Maritime claims:
territorial sea: 12 nm
contiguous zone: 24 nm
exclusive economic zone: 200 nm
continental shelf: not specified

Climate:
mostly temperate, but tropical in Hawaii and Florida, arctic in Alaska, semiarid in the great plains west of the Mississippi River, and arid in the Great Basin of the southwest; low winter temperatures in the northwest are ameliorated occasionally in January and February by warm chinook winds from the eastern slopes of the Rocky Mountains

Terrain:
vast central plain, mountains in west, hills and low mountains in east; rugged mountains and broad river valleys in Alaska; rugged, volcanic topography in Hawaii

Elevation extremes:
lowest point: Death Valley -86 m
highest point: Mount McKinley 6,198 m

Natural resources:
coal, copper, lead, molybdenum, phosphates, uranium, bauxite, gold, iron, mercury, nickel, potash, silver, tungsten, zinc, petroleum, natural gas, timber
note: the US has the world's largest coal reserves with 491 billion short tons accounting for 27% of the world's total

Land use:
arable land: 18.01%
permanent crops: 0.21%
other: 81.78% (2005)

Irrigated land:
223,850 sq km (2003)

Total renewable water resources:
3,069 cu km (1985)

Freshwater withdrawal (domestic/industrial/agricultural):
total: 477 cu km/yr (13%/46%/41%)
per capita: 1,600 cu m/yr (2000)

Natural hazards:
tsunamis; volcanoes; earthquake activity around Pacific Basin; hurricanes along the Atlantic and Gulf of Mexico coasts; tornadoes in the midwest and southeast; mud slides in California; forest fires in the west; flooding; permafrost in northern Alaska, a major impediment to development

Environment - current issues:
air pollution resulting in acid rain in both the US and Canada; the US is the largest single emitter of carbon dioxide from the burning of fossil fuels; water pollution from runoff of pesticides and fertilizers; limited natural fresh water resources in much of the western part of the country require careful management; desertification

Environment - international agreements:
party to: Air Pollution, Air Pollution-Nitrogen Oxides, Antarctic-Environmental Protocol, Antarctic-Marine Living Resources, Antarctic Seals, Antarctic Treaty, Climate Change, Desertification, Endangered Species, Environmental Modification, Marine Dumping, Marine Life Conservation, Ozone Layer Protection, Ship Pollution, Tropical Timber 83, Tropical Timber 94, Wetlands, Whaling
signed, but not ratified: Air Pollution-Persistent Organic Pollutants, Air Pollution-Volatile Organic Compounds, Biodiversity, Climate Change-Kyoto Protocol, Hazardous Wastes

Geography - note:
world's third-largest country by size (after Russia and Canada) and by population (after China and India); Mt. McKinley is highest point in North America and Death Valley the lowest point on the continent


NOTE: The information regarding United States on this page is re-published from the 2010 World Fact Book of the United States Central Intelligence Agency. No claims are made regarding the accuracy of United States Geography 2010 information contained here. All suggestions for corrections of any errors about United States Geography 2010 should be addressed to the CIA.



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