Area 51 is the common name of a highly classified United States Air Force (USAF) facility within the Nevada Test and Training Range. A remote detachment administered by Edwards Air Force Base, the facility is officially called Homey Airport (XTA/KXTA) or Groom Lake. Details of its operations are not made public, but the USAF says that it is an open training range, and it is commonly thought to support the development and testing of experimental aircraft and weapons systems. The USAF acquired the site in 1955, primarily for flight testing the Lockheed U-2 aircraft.
The Great Lakes, also called the Great Lakes of North America or the Laurentian Great Lakes, is a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. They are Lakes Superior, Michigan, Huron, Erie, and Ontario and are in general on or near the Canada–United States border. Hydrologically, there are four lakes, because lakes Michigan and Huron join at the Straits of Mackinac. The Great Lakes Waterway enables modern travel and shipping by water among the lakes.
Lake Ontario is one of the five Great Lakes of North America. It is surrounded on the north, west, and southwest by the Canadian province of Ontario, and on the south and east by the U.S. state of New York, whose water boundaries meet in the middle of the lake.
Lake Michigan is one of the five Great Lakes of North America. It is the second-largest of the Great Lakes by volume and the third-largest by surface area, after Lake Superior and Lake Huron. To the east, its basin is conjoined with that of Lake Huron through the narrow Straits of Mackinac, giving it the same surface elevation as its easterly counterpart; the two are technically a single lake.
Lake Superior is the largest and northernmost of the Great Lakes of North America, and among freshwater lakes, it is the world's largest by surface area and the third-largest by volume. It holds 10% of the world's surface fresh water. It is shared by Ontario, Canada, to the north, and states in the United States in other directions: Minnesota to the west, and Wisconsin and the Upper Peninsula of Michigan to the south. Lake Superior is the most northerly and most westerly of the Great Lakes chain, and the highest in elevation. It drains into Lake Huron via St. Mary's River.
Michigan is a state in the Great Lakes region of the upper Midwestern United States. Its name derives from a gallicized variant of the original Ojibwe word ᒥᓯᑲᒥ, meaning 'large water' or 'large lake'. With a population of nearly 10.1 million and a total area of nearly 97,000 sq mi (250,000 km2), Michigan is the 10th-largest state by population, the 11th-largest by area, and the largest by area east of the Mississippi River. Its capital is Lansing, and its largest city is Detroit. Metro Detroit is among the nation's most populous and largest metropolitan economies.
Utah is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to its west by Nevada. Utah also touches a corner of New Mexico in the southeast. Of the fifty U.S. states, Utah is the 13th-largest by area; with a population over three million, it is the 30th-most-populous and 11th-least-densely populated. Urban development is mostly concentrated in two areas: the Wasatch Front in the north-central part of the state, which is home to roughly two-thirds of the population and includes the capital city, Salt Lake City; and Washington County in the southwest, with more than 180,000 residents. Most of the western half of Utah lies in the Great Basin.
Salt Lake City is the capital and most populous city of the U.S. state of Utah, as well as the seat of Salt Lake County, the most populous county in Utah. With a population of 199,723 in 2020, the city is the core of the Salt Lake City metropolitan area, which has a population of 1,257,936. Salt Lake City is further situated within a larger metropolis known as the Salt Lake City–Ogden–Provo Combined Statistical Area, a corridor of contiguous urban and suburban development stretched along a 120-mile (190 km) segment of the Wasatch Front, comprising a population of 2,606,548, making it the 22nd largest in the nation. It is also the central core of the larger of only two major urban areas located within the Great Basin.
The Adirondack Mountains form a massif in northeastern Upstate New York, which is part of the United States. Its boundaries correspond roughly to the boundaries of Adirondack Park. They cover about 5,000 square miles (13,000 km2). The mountains form a roughly circular dome, about 160 miles (260 km) in diameter and about 1 mile (1,600 m) high. The current relief owes much to glaciation. There are more than 200 lakes around the mountains, including Lake George, Lake Placid, and Lake Tear of the Clouds, which is the source of the Hudson River. The Adirondack Region is also home to hundreds of mountain summits, with some reaching heights of 5,000 feet or more.
Lake Baikal is a rift lake located in Russia situated in southern Siberia between the federal subjects of Irkutsk Oblast to the northwest and Buryatia to the southeast.
Lake Tahoe is a large freshwater lake in the Sierra Nevada of the United States. Lying at 6,225 ft (1,897 m), it straddles the state line between California and Nevada, west of Carson City. Lake Tahoe is the largest alpine lake in North America, and at 122,160,280 acre⋅ft (150.7 km3) it trails only the five Great Lakes as the largest by volume in the United States. Its depth is 1,645 ft (501 m), making it the second deepest in the United States after Crater Lake in Oregon.
The Lake District, also known as the Lakes or Lakeland, is a mountainous region in North West England. A popular holiday destination, it is famous for its lakes, forests and mountains, and its associations with William Wordsworth and other Lake Poets and also with Beatrix Potter and John Ruskin. The Lake District National Park was established in 1951 and covers an area of 2,362 square kilometres (912 sq mi). It was designated a UNESCO World Heritage Site in 2017.
The Great Basin is the largest area of contiguous endorheic watersheds – those with no outlets – in North America. It spans nearly all of Nevada, much of Utah, and portions of California, Idaho, Oregon, Wyoming, and Baja California, Mexico. It is noted for both its arid climate and the basin and range topography that varies from the North American low point at Badwater Basin in Death Valley to the highest point of the contiguous United States, less than 100 miles (160 km) away at the summit of Mount Whitney. The region spans several physiographic divisions, biomes, ecoregions, and deserts.
An endorheic basin is a drainage basin that normally retains water and allows no outflow to other external bodies of water, such as rivers or oceans, but drainage converges instead into lakes or swamps, permanent or seasonal, that equilibrate through evaporation. They are also called closed or terminal basins or internal drainage systems or basins. Endorheic regions contrast with exorheic regions. Endorheic water bodies include some of the largest lakes in the world, such as the Caspian Sea, the world's largest inland body of water.
The Chicago metropolitan area, also colloquially referred to as Chicagoland, is a major urban area in the Midwestern United States that is one of the forty largest in the world. Encompassing 10,286 sq mi, the metropolitan area includes the city of Chicago, and its suburbs, spanning, by the US Census definition, 16 counties in northeast Illinois, southeast Wisconsin, and northwest Indiana. The MSA had a 2020 population of 9.7 million people and the CSA was estimated at nearly 10 million people. The Chicago area is the third-largest metropolitan area and the third-largest Combined Statistical Area in the United States, as well as the fourth-largest metropolitan area in North America. Chicago is in the Great Lakes megalopolis. By 2030, Chicago will join the ranks of the world's megacities, with a direct metropolitan population passing 10 million.
Lake Mead is a reservoir formed by the Hoover Dam on the Colorado River in the Southwestern United States. It is located in the states of Nevada and Arizona, 24 mi (39 km) east from Las Vegas Strip. It is the largest reservoir in the United States in terms of water capacity. Formed by the Hoover Dam on September 30, 1935, the reservoir serves water to the states of Arizona, California, and Nevada, as well as some of Mexico, providing sustenance to nearly 20 million people and large areas of farmland.
The African Great Lakes are a series of lakes constituting the part of the Rift Valley lakes in and around the East African Rift. They include Lake Victoria, the third-largest fresh water lake in the world by area, Lake Tanganyika, the world's second-largest freshwater lake by volume and depth, and Lake Malawi, the world's eighth-largest fresh water lake by area. Collectively, they contain 31,000 km3 of water, which is more than either Lake Baikal or the North American Great Lakes. This total constitutes about 25% of the planet's unfrozen surface fresh water. The large rift lakes of Africa are the ancient home of great biodiversity, and 10% of the world's fish species live in this region.
The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. In coastal environments, the littoral zone extends from the high water mark, which is rarely inundated, to shoreline areas that are permanently submerged. The littoral zone always includes this intertidal zone, and the terms are often used interchangeably. However, the meaning of littoral zone can extend well beyond the intertidal zone.
A lake is an area filled with water, localized in a basin, surrounded by land, and set apart from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger oceans, they do form part of the Earth's water cycle. Lakes are distinct from lagoons, which are generally coastal parts of the ocean. Lakes are typically larger and deeper than ponds, which also lie on land, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which usually flow in a channel on land. Most lakes are fed and drained by rivers and streams.
