Portal:Lakes
Portal maintenance status: (October 2020)
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The Lakes Portal
A portal dedicated to Lakes
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A view of Lake Teletskoye, the largest lake in the Altai Mountains and the Altai Republic, Russia
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A view of Goëngarijpsterpoelen, one of the Frisian Lakes
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A view of West Lake in Hangzhou, China
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A view of the six lowest (and largest) lakes of the Seven Rila Lakes
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Thunder Lake in Northern Alberta
Introduction
A lake is an often naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from the ocean, although they may be connected with the ocean by rivers. Most lakes are freshwater and account for almost all the world's surface freshwater, but some are salt lakes with salinities even higher than that of seawater. Lakes vary significantly in surface area and volume of water.
Lakes are typically larger and deeper than ponds, which are also water-filled basins on land, although there are no official definitions or scientific criteria distinguishing the two. Lakes are also distinct from lagoons, which are generally shallow tidal pools dammed by sandbars or other material at coastal regions of oceans or large lakes. Most lakes are fed by springs, and both fed and drained by creeks and rivers, but some lakes are endorheic without any outflow, while volcanic lakes are filled directly by precipitation runoffs and do not have any inflow streams.
Natural lakes are generally found in mountainous areas (i.e. alpine lakes), dormant volcanic craters, rift zones and areas with ongoing glaciation. Other lakes are found in depressed landforms or along the courses of mature rivers, where a river channel has widened over a basin formed by eroded floodplains and wetlands. Some lakes are found in caverns underground. Some parts of the world have many lakes formed by the chaotic drainage patterns left over from the last ice age. All lakes are temporary over long periods of time, as they will slowly fill in with sediments or spill out of the basin containing them. (Full article...)
Selected article - show another
Lake Ptolemy is a former lake in Sudan. This lake formed during the Holocene in the Darfur region, during a time when the monsoon over Africa was stronger. The existence of the lake is dated between about 9,100–2,400 years before present. This lake could have reached a surface area of 30,750 square kilometres (11,870 sq mi), larger than present-day Lake Erie, although estimates of its size vary and it might have been much smaller. The shorelines in some places, insofar as they are recognizable, feature riparian landscapes and reeds. The lake was a freshwater lake replenished by groundwater and runoff from neighbouring mountains and might itself have been the source for the Nubian Sandstone Aquifer System. The lake featured a diverse ecosystem with a number of species, and possibly facilitated the spread of species between the Nile and Lake Chad. (Full article...)
General topics
Lake zones |
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Lake stratification |
Lake types |
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General images - show new batch
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Image 1Cross sectional diagram of limnological lake zones (left) and algal community types (right) (from Lake)
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Image 3A view of the southern polar plain of Mars. The area where a subglacial lake has been detected is highlighted. Image credit: USGS Astrogeology Science Center, Arizona State University (from Subglacial lake)
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Image 6The Nowitna River in Alaska. Two oxbow lakes – a short one at the bottom of the picture and a longer, more curved one at the middle-right. (from Lake)
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Image 7A schematic cross-section of the subglacial pool beneath Taylor Glacier and its outflow, Blood Falls. Image credit: Zina Deretsky / US National Science Foundation (from Subglacial lake)
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Image 8Round Tangle Lake, one of the Tangle Lakes, 2,864 feet (873 m) above sea level in interior Alaska (from Lake)
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Image 12View of Lake Toba in Sumatra, Indonesia which is the largest volcanic lake in the world (from Volcanogenic lake)
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Image 15Satellite image of subglacial Lake Vostok in Antarctica. Image credit: NASA (from Subglacial lake)
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Image 16Russian scientist Peter Kropotkin first proposed the idea of fresh water under Antarctic ice. (from Subglacial lake)
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Image 17Lava lake at Mount Nyiragongo in the Democratic Republic of the Congo (from Volcanogenic lake)
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Image 19Titan's north polar hydrocarbon seas and lakes, as seen in a false-color Cassini synthetic aperture radar mosaic (from Lake)
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Image 24Ephemeral 'Lake Badwater', a lake only noted after heavy winter and spring rainfall, Badwater Basin, Death Valley National Park, 9 February 2005. Landsat 5 satellite photo (from Lake)
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Image 25An illustration of ice core drilling above subglacial Lake Vostok. These drilling efforts collected re-frozen lake water that has been analyzed to understand the lake's chemistry. Image credit: Nicolle Rager-Fuller / US National Science Foundation (from Subglacial lake)
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Image 26An artist's depiction of the subglacial lakes and rivers beneath the Antarctic Ice Sheet. Image credit: Zina Deretsky / US National Science Foundation (from Subglacial lake)
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Image 27Garibaldi Lake in British Columbia, Canada, is impounded by lava flows comprising The Barrier (from Volcanogenic lake)
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Image 31The first view of the sediment at the bottom of subglacial Lake Whillans, captured by the WISSARD expedition. Image credit: NASA/JPL, California Institute of Technology (from Subglacial lake)
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Natural lakes |
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Urban Tirana | |||||
Lakes on the Altiplano | |
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Present-day lakes and salt pans | |
Lake expansions of Lake Titicaca | |
Ancient lakes | |
Other paleolakes and lake expansions in the region | |
Five Great Lakes | ||
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Notable freshwater lakes |
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Notable salt lakes | ||
National Parks | ||
Protected wetlands | ||
Nature Reserves | ||
Major urban lakes | ||
Reservoirs | ||
Eastern Georgia |
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Western Georgia |
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Apalachicola-Chattahoochee-Flint River Basin | |
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Alabama-Coosa-Tallapoosa River Basin | |
Savannah River Basin |
Great Lakes of North America | |||||||||||||
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Main lakes | |||||||||||||
Secondary lakes | |||||||||||||
Bays and channels |
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Waterways | |||||||||||||
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Organizations |
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Low-altitude lakes | |
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Mid-altitude lakes | |
High-altitude lakes | |
Reservoirs | |
Related topics | |
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Lakes in Japan | |
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Hokkaido region | |
Tōhoku region | |
Kantō region | |
Chūbu region | |
Kansai region | |
San'in region | |
Kyūshū region | |
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Kurtna Lake District in Estonia | |
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"The Largest Lake in the Philippines" | |||||||
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Primary inflows |
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Settlements |
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Lakes/ponds | |
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Reservoirs | |
Lakes in Mongolia | |
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Lakes |
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Lakes of New Mexico | |
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Lakes and other natural bodies of water in New South Wales, Australia | |
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Coastal lagoons and lakes | |
Freshwater | |
Glacial | |
Salt | |
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Minor |
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Pleistocene proglacial lakes and related seas | |||||||||||||||||||||||||||||
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Asia | |||||||||||||||||||||||||||||
Europe |
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North America |
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Lakes of Switzerland | ||
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Major lakes |
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Lists | ||
Coastal lagoons and lakes | |
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Freshwater | |
Glacial | |
Salt | |
Man-made reservoirs | |
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Natural lakes |
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Artificial lakes | |
States |
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Federal district | |
Territories | |
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Neighboring lakes and dams | ||
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Associated Wikimedia
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External media
- World Lake Database. International Lake Environment Committee Foundation. – provides a searchable database
- Global Lakes and Wetlands Database. World Wide Fund for Nature. – available for free download