Geography of North America

Geography of North America
Geo Swan · Public domain · source
Name	North America
Continent	North America
Area km2	24709000
Population	579000000
Population year	2024
Highest mountain	Denali
Highest elevation m	6190
Longest river	Mississippi River

Contents

Geography of North America

North America occupies the northern portion of the Western Hemisphere and includes major landmasses such as the United States, Canada, Mexico, the Caribbean Sea archipelagos and the states of Central America like Guatemala and Panama. The continent stretches from the Arctic Ocean in the north to the Isthmus of Panama in the south, bordering the Atlantic Ocean and Pacific Ocean, and hosts diverse features including the Rocky Mountains, Appalachian Mountains, Great Plains, and the Great Lakes. Its strategic position connects to global trade routes like the Panama Canal and has shaped events such as the Columbian Exchange and the Louisiana Purchase in shaping continental settlement and development.

Physical geography

North America's relief ranges from the Arctic Archipelago and the Greenland Ice Sheet (part of the Kingdom of Denmark) to low-lying Caribbean islands such as Cuba, Hispaniola, and Jamaica, and continental shelves like the Sullivan Basin and Gulf of Mexico margin. Major mountain chains include the Brooks Range and Alaska Range with peaks like Denali and the volcanic Cascade Range featuring Mount St. Helens and Mount Rainier. The eastern seaboard is dominated by the Appalachian Mountains and coastal plains including the Delmarva Peninsula and Florida Peninsula, while the interior hosts the Great Basin, Colorado Plateau, and the Mississippi River floodplain. Important islands and archipelagos include the Aleutian Islands, Vancouver Island, Prince Edward Island, and the Bahamas bank system.

The continent records Precambrian cratons such as the Canadian Shield and orogenic belts like the Appalachian orogeny and Cordilleran orogeny. Plate interactions involve the North American Plate, the Pacific Plate, the Juan de Fuca Plate, and the Cocos Plate, producing subduction zones offshore of Cascadia and transform faults such as the San Andreas Fault near Los Angeles and San Francisco. Volcanism and seismicity shape regions including Yellowstone Caldera in Wyoming, the Mexican Volcanic Belt with Popocatépetl and Pico de Orizaba, and the geothermal systems of Iceland are not on the continent but similar processes occur at Iceland-like hotspots such as the Anahim Volcanic Belt in British Columbia. Mineral provinces include the Athabasca Basin uranium deposits, the Mesabi Range, and the Carlin Trend gold fields in Nevada.

North America spans Arctic tundra in the Nunavut and Greenland peripheries to tropical rainforests in Belize and Honduras, with temperate forests in New England and British Columbia, boreal forests of the Taiga across Canada and Alaska, prairies on the Canadian Prairies, and deserts such as the Sonoran Desert and Mojave Desert around Phoenix and Las Vegas. Climatic drivers include the Gulf Stream and El Niño–Southern Oscillation affecting Mexico City precipitation and California drought cycles, Arctic amplification influencing Nunavut permafrost thaw, and the Rocky Mountain rain shadow shaping the Great Basin. Protected ecoregions include Yellowstone National Park, Banff National Park, Everglades National Park, and Sian Ka'an biosphere.

Drainage systems are dominated by the Mississippi River basin, the Great Lakes–St. Lawrence River system linking Lake Superior and Quebec City, the Mackenzie River into the Beaufort Sea, and the Colorado River cutting the Grand Canyon and supplying Las Vegas and Phoenix. Coastal currents include the Labrador Current and the Loop Current in the Gulf of Mexico; estuaries like the Chesapeake Bay and Galveston Bay support rich fisheries. The continent hosts freshwater reservoirs such as Lake Winnipeg, Lake Ontario, and Lake Erie, while hydrological infrastructure includes the Hoover Dam, the Three Gorges is in Asia but continental analogues are dams like Grand Coulee Dam and Itaipu is in South America; transboundary water issues involve the Colorado River Compact and the Boundary Waters Treaty of 1909 between Canada and the United States.

Vegetation ranges from black spruce and lodgepole pine in boreal zones to saguaro and ocotillo in desert areas, and from temperate deciduous species such as sugar maple and oak in New England to tropical mahogany and ceiba in Belize and Guatemala. Iconic fauna include American bison on the Great Plains, gray wolf populations in Yellowstone National Park and Alaska, migratory monarch butterfly populations that overwinter in Michoacán, and marine species like humpback whale along the Gulf of Alaska and the Caribbean Sea coral communities threatened by bleaching events like those affecting Florida Reef Tract. Conservation efforts involve organizations and frameworks such as IUCN, CBD, Endangered Species Act, and initiatives in protected sites like Gulf Islands National Seashore and Kluane National Park and Reserve.

Population centers cluster in metropolitan corridors such as the BosWash megalopolis from Boston to Washington, D.C., the Great Lakes Megalopolis around Chicago and Toronto, and the Los Angeles and Mexico City urban agglomerations. Indigenous nations include the Haida, Navajo Nation, Cree, Maya, and Inuit with contemporary jurisdictions like the Cherokee Nation and Nunavut territory. Migration flows have been shaped by events like the Mexican Revolution and policies such as the Bracero Program, while infrastructure networks include the Trans-Canada Highway, the Interstate Highway System, Pan-American Highway, and major air hubs like Hartsfield–Jackson Atlanta International Airport and Toronto Pearson International Airport. Demographic challenges involve urbanization in Guadalajara, aging populations in Canada, and high fertility rates in parts of the Caribbean.

Politically the continent comprises sovereign states like the United States, Canada, Mexico, and Central American republics such as Costa Rica and El Salvador, as well as overseas territories like Greenland (Denmark) and constituent states like Puerto Rico (United States). Economic integration occurs through agreements like NAFTA/USMCA, trade blocs including the Caribbean Community and historic links through the Commonwealth of Nations for members such as Belize. Resource geopolitics involve energy basins like the Permian Basin and Athabasca oil sands, fisheries governed by treaties such as the North Pacific Fisheries Commission, and strategic waterways including the Panama Canal and Arctic passages opened by climate change (policy discussions at Arctic Council). Cultural regions span Hispanic America in Mexico and Central America, Anglophone North America in Canada and the United States, and Francophone areas like Quebec and parts of the Caribbean.