Body of water
A body of water or waterbody is any significant accumulation of water on a planet's surface. The term most refers to oceans and lakes, but it includes smaller pools of water such as ponds, wetlands, or more puddles. A body of water contained. Most are occurring geographical features, but some are artificial. There are types. For example, most reservoirs are created by engineering dams, but some natural lakes are used as reservoirs. Most harbors are occurring bays, but some harbors have been created through construction. Bodies of water that are navigable are known as waterways; some bodies of water collect and move water, such as rivers and streams, others hold water, such as lakes and oceans. The term body of water can refer to a reservoir of water held by a plant, technically known as a phytotelma. Bodies of water are affected by gravity, what creates the tidal effects on Earth. Note that there are some geographical features involving water that are not bodies of water, for example waterfalls and rapids.
Arm of the sea – sea arm, used to describe a sea loch. Arroyo – a dry creek bed or gulch that temporarily fills with water after a heavy rain, or seasonally. See wadi. Artificial lake or artificial pond – see Reservoir. Barachois – a lagoon separated from the ocean by a sand bar. Bay – an area of water bordered by land on three sides, similar to, but smaller than a gulf. Bayou – a slow-moving stream or a marshy lake. Beck – a small stream. Bight – a large and only receding bay, or a bend in any geographical feature. Billabong – an oxbow lake in Australia. Boil – see Seep Brook – a small stream. Burn – a small stream. Canal – an artificial waterway connected to existing lakes, rivers, or oceans. Channel – the physical confine of a river, slough or ocean strait consisting of a bed and banks. See stream bed and strait. Cove – a coastal landform. Earth scientists use the term to describe a circular or round inlet with a narrow entrance, though colloquially the term is sometimes used to describe any sheltered bay.
Creek – a small stream. Creek – an inlet of the sea, narrower than a cove. Delta – the location where a river flows into an ocean, estuary, lake, or reservoir. Distributary or distributary channel – a stream that branches off and flows away from a main stream channel. Drainage basin – a region of land where water from rain or snowmelt drains downhill into another body of water, such as a river, lake, or reservoir. Draw – a dry creek bed or gulch that temporarily fills with water after a heavy rain, or seasonally. See wadi. Estuary – a semi-enclosed coastal body of water with one or more rivers or streams flowing into it, with a free connection to the open sea Firth – a regional term of Scotland used to denote various coastal waters, such as large sea bays, estuaries and straits. Fjord – a narrow inlet of the sea between cliffs or steep slopes. Glacier – a large collection of ice or a frozen river that moves down a mountain. Glacial pothole – a kettle Gulf – a part of a lake or ocean that extends so that it is surrounded by land on three sides, similar to, but larger than a bay.
Headland – an area of water bordered by land on three sides. Harbor – an artificial or occurring body of water where ships are stored or may shelter from the ocean's weather and currents. Impoundment – an artificially-created body of water, by damming a source. Used for flood control, as a drinking water supply, ornamentation, or other purpose or combination of purposes. Note that the process of creating an "impoundment" of water is itself called "impoundment." Inlet – a body of water seawater, which has characteristics of one or more of the following: bay, estuary, fjord, sea loch, or sound. Kettle – a shallow, sediment-filled body of water formed by retreating glaciers or draining floodwaters. Kill – used in areas of Dutch influence in New York, New Jersey and other areas of the former New Netherland colony of Dutch America to describe a strait, river, or arm of the sea. Lagoon – a body of comparatively shallow salt or brackish water separated from the deeper sea by a shallow or exposed sandbank, coral reef, or similar feature.
Lake – a body of water freshwater, of large size contained on a body of land. Lick — a small watercourse or an ephemeral stream Loch – a body of water such as a lake, sea inlet, fjord, estuary or bay. Mangrove swamp – Saline coastal habitat of mangrove trees and shrubs. Marsh – a wetland featuring grasses, reeds, typhas and other herbaceous plants in a context of shallow water. See Salt marsh. Mediterranean sea – a enclosed sea that has limited exchange of deep water with outer oceans and where the water circulation is dominated by salinity and temperature differences rather than winds Mere – a lake or body of water, broad in relation to its depth. Mill pond – a reservoir built to provide flowing water to a watermill Moat – a deep, broad trench, either dry or filled with water and protecting a structure, installation, or town. Ocean – a major body of salty water that, in totality, covers about 71% of the Earth's surface. Oxbow lake – a U-shaped lake formed when a wide meander from the mainstem of a riv
Alaska is a U. S. state in the northwest extremity of North America, just across the Bering Strait from Asia. The Canadian province of British Columbia and territory of Yukon border the state to the east and southeast, its most extreme western part is Attu Island, it has a maritime border with Russia to the west across the Bering Strait. To the north are the Chukchi and Beaufort seas—southern parts of the Arctic Ocean; the Pacific Ocean lies to southwest. It is the largest U. S. state by the seventh largest subnational division in the world. In addition, it is the most sparsely populated of the 50 United States. Half of Alaska's residents live within the Anchorage metropolitan area. Alaska's economy is dominated by the fishing, natural gas, oil industries, resources which it has in abundance. Military bases and tourism are a significant part of the economy; the United States purchased Alaska from the Russian Empire on March 30, 1867, for 7.2 million U. S. dollars at two cents per acre. The area went through several administrative changes before becoming organized as a territory on May 11, 1912.
It was admitted as the 49th state of the U. S. on January 3, 1959. The name "Alaska" was introduced in the Russian colonial period when it was used to refer to the Alaska Peninsula, it was derived from an Aleut-language idiom. It means object to which the action of the sea is directed. Alaska is the northernmost and westernmost state in the United States and has the most easterly longitude in the United States because the Aleutian Islands extend into the Eastern Hemisphere. Alaska is the only non-contiguous U. S. state on continental North America. It is technically part of the continental U. S. but is sometimes not included in colloquial use. S. called "the Lower 48". The capital city, Juneau, is situated on the mainland of the North American continent but is not connected by road to the rest of the North American highway system; the state is bordered by Yukon and British Columbia in Canada, to the east, the Gulf of Alaska and the Pacific Ocean to the south and southwest, the Bering Sea, Bering Strait, Chukchi Sea to the west and the Arctic Ocean to the north.
Alaska's territorial waters touch Russia's territorial waters in the Bering Strait, as the Russian Big Diomede Island and Alaskan Little Diomede Island are only 3 miles apart. Alaska has a longer coastline than all the other U. S. states combined. Alaska is the largest state in the United States by total area at 663,268 square miles, over twice the size of Texas, the next largest state. Alaska is larger than all but 18 sovereign countries. Counting territorial waters, Alaska is larger than the combined area of the next three largest states: Texas and Montana, it is larger than the combined area of the 22 smallest U. S. states. There are no defined borders demarcating the various regions of Alaska, but there are six accepted regions: The most populous region of Alaska, containing Anchorage, the Matanuska-Susitna Valley and the Kenai Peninsula. Rural unpopulated areas south of the Alaska Range and west of the Wrangell Mountains fall within the definition of South Central, as do the Prince William Sound area and the communities of Cordova and Valdez.
Referred to as the Panhandle or Inside Passage, this is the region of Alaska closest to the rest of the United States. As such, this was where most of the initial non-indigenous settlement occurred in the years following the Alaska Purchase; the region is dominated by the Alexander Archipelago as well as the Tongass National Forest, the largest national forest in the United States. It contains the state capital Juneau, the former capital Sitka, Ketchikan, at one time Alaska's largest city; the Alaska Marine Highway provides a vital surface transportation link throughout the area, as only three communities enjoy direct connections to the contiguous North American road system. Designated in 1963; the Interior is the largest region of Alaska. Fairbanks is the only large city in the region. Denali National Park and Preserve is located here. Denali is the highest mountain in North America. Southwest Alaska is a sparsely inhabited region stretching some 500 miles inland from the Bering Sea. Most of the population lives along the coast.
Kodiak Island is located in Southwest. The massive Yukon–Kuskokwim Delta, one of the largest river deltas in the world, is here. Portions of the Alaska Peninsula are considered part of Southwest, with the remaining portions included with the Aleutian Islands; the North Slope is tundra peppered with small villages. The area is known for its massive reserves of crude oil, contains both the National Petroleum Reserve–Alaska and the Prudhoe Bay Oil Field; the city of Utqiagvik known as Barrow, is the northernmost city in the United States and is located here. The Northwest Arctic area, anchored by Kotzebue and containing the Kobuk River valley, is regarded as being part of this region. However, the respective Inupiat of the No
Denali Borough, Alaska
The Denali Borough is a borough located in the U. S. state of Alaska. As of the 2010 census the population of the borough was 1,826; the borough seat is Healy, its only incorporated place is Anderson. The borough was incorporated in 1990; the area was a part of the Unorganized Borough, with the Upper Railbelt School District serving as the region's rural education attendance area. The borough has a total area of 12,777 square miles, of which 12,751 square miles is land and 26 square miles is water; the borough contains North America's highest point: Denali, from which it derives its name, at 6190.5 m. Denali National Park and Preserve Denali Wilderness Yukon-Koyukuk Census Area - west/north Fairbanks North Star Borough - northeast Southeast Fairbanks Census Area - east Matanuska-Susitna Borough - south As of the census of 2000, there were 1,893 people, 785 households, 452 families residing in the borough; the population density was 0.148 people per square mile. There were 1,351 housing units at an average density of 0.106 per square mile.
The racial makeup of the borough was 85.74% White, 1.43% Black or African American, 4.75% Native American, 1.53% Asian, 0.37% Pacific Islander, 0.95% from other races, 5.23% from two or more races. 2.48% of the population were Hispanic or Latino of any race. There were 785 households out of which 31.00% had children under the age of 18 living with them, 48.40% were married couples living together, 4.50% had a female householder with no husband present, 42.30% were non-families. 35.00% of all households were made up of individuals and 1.40% had someone living alone, 65 years of age or older. The average household size was 2.28 and the average family size was 3.03. In the borough the population was spread out with 23.80% under the age of 18, 6.70% from 18 to 24, 36.80% from 25 to 44, 29.70% from 45 to 64, 3.10% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 139.00 males. For every 100 females age 18 and over, there were 147.10 males. Denali Borough is the 63rd highest-income county in the United States, highest-income county in Alaska, by personal per capita income as of 2009.
Anderson Clear Clear AFS Cantwell Denali Park Ferry Healy Kantishna Suntrana Usibelli Diamond In the Twilight Saga by Stephenie Meyer, the Denali vampire coven lives in Denali because of the lack of sunlight. List of airports in the Denali Borough National Register of Historic Places listings in Denali Borough, Alaska Media related to Denali Borough, Alaska at Wikimedia Commons Official website
Denali National Park and Preserve
Denali National Park and Preserve is an American national park and preserve located in Interior Alaska, centered on Denali, the highest mountain in North America. The park and contiguous preserve encompass 6,045,153 acres, larger than the state of New Hampshire. On December 2, 1980, 2,146,580-acre Denali Wilderness was established within the park. Denali's landscape is a mix of forest at the lowest elevations, including deciduous taiga, with tundra at middle elevations, glaciers and bare rock at the highest elevations; the longest glacier is the Kahiltna Glacier. Wintertime activities include dog sledding, cross-country skiing, snowmobiling; the park received 594,660 recreational visitors in 2018. Human habitation in the Denali Region extends to more than 11,000 years before the present, with documented sites just outside park boundaries dated to more than 8,000 years before present; however few archaeological sites have been documented within the park boundaries, owing to the region's high elevation, with harsh winter conditions and scarce resources compared to lower elevations in the area.
The oldest site within park boundaries is the Teklanika River site, dated to about 7130 BC. More than 84 archaeological sites have been documented within the park; the sites are characterized as hunting camps rather than settlements, provide little cultural context. The presence of Athabaskan peoples in the region is dated to 1,500 - 1,000 years before present on linguistic and archaeological evidence, while researchers have proposed that Athabaskans may have inhabited the area for thousands of years before then; the principal groups in the park area in the last 500 years include the Koyukon and Dena'ina people. Other prehistoric finds include Mesozoic fossils from the Denali Region. Studies of fossil plants from the same formation indicate the area was wet, with marshes and ponds throughout the region. In 1906, conservationist Charles Alexander Sheldon conceived the idea of preserving the Denali region as a national park, he presented the plan to his co-members of the Crockett Club. They decided that the political climate at the time was unfavorable for congressional action, that the best hope of success rested on the approval and support from the Alaskans themselves.
Sheldon wrote, "The first step was to secure the approval and cooperation of the delegate who represented Alaska in Congress."In October 1915, Sheldon took up the matter with Dr. E. W. Nelson of the Biological Survey at Washington, D. C. and with George Bird Grinnell, with a purpose to introduce a suitable bill in the coming session of Congress. The matter was taken to the Game Committee of the Boone and Crockett Club and, after a full discussion, it received the committee's full endorsement. On December 3, 1915, the plan was presented to Alaska's delegate, James Wickersham, who after some deliberation gave his approval; the plan went to the Executive Committee of the Boone and Crockett Club and, on December 15, 1915, it was unanimously accepted. The plan was thereupon endorsed by the Club and presented to Stephen Mather, Assistant Secretary of the Interior in Washington, D. C. who approved it. The bill was introduced in April, 1916, by Delegate Wickersham in the House and by Senator Key Pittman of Nevada in the Senate.
Much lobbying took place over the following year, on February 19, 1917, the bill passed. On February 26, 1917, 11 years from its conception, the bill was signed in legislation by the President of the United States, Woodrow Wilson, thereby creating Mount McKinley National Park. A portion of Denali, excluding the summit, was included the original park boundary. On Thanksgiving Day in 1921, the Mount McKinley Park Hotel opened. In July 1923, President Warren Harding stopped at the hotel, on a tour of the length of the Alaska Railroad, during which he drove a golden spike signaling its completion at Nenana; the hotel was the first thing. The flat-roofed, two-story log building featured exposed balconies, glass windows, electric lights. Inside were two dozen guest rooms, a shop, lunch counter and storeroom. By the 1930s, there were reports of lice, dirty linen, drafty rooms, marginal food, which led to the hotel's closing. In 1947, the park boundaries expanded to include the area of the railroad. After being abandoned for many years, the hotel was destroyed in 1950 by a fire.
There was no road access to the park entrance until 1957. Now with a highway connection to Anchorage and Fairbanks, park attendance expanded: there were 5,000 visitors in 1956 and 25,000 visitors by 1958; the park was designated an international biosphere reserve in 1976. A separate Denali National Monument was proclaimed by President Jimmy Carter on December 1, 1978; the name of Mount McKinley National Park was subject to local criticism from the beginning of the park. The word Denali means "the high one" in the native Athabaskan language and refers to the mountain itself; the mountain was named after newly elected US president William McKinley in 1897 by local prospector William A. Dickey; the United States government formally adopted the name Mount McKinley after President Wilson signed the bill creating Mount McKinley National Park into effect in 1917. In 1980, Mount McKinley National Park was combined with Denali National Monument, the Alaska National Interest Lands Conservation Act named the combined unit the Denali National Park and Preserve.
At that time the Alaska state Board of Geographic Names changed
The United States of America known as the United States or America, is a country composed of 50 states, a federal district, five major self-governing territories, various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U. S. is the third most populous country. The capital is Washington, D. C. and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico; the State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean; the U. S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The diverse geography and wildlife of the United States make it one of the world's 17 megadiverse countries.
Paleo-Indians migrated from Siberia to the North American mainland at least 12,000 years ago. European colonization began in the 16th century; the United States emerged from the thirteen British colonies established along the East Coast. Numerous disputes between Great Britain and the colonies following the French and Indian War led to the American Revolution, which began in 1775, the subsequent Declaration of Independence in 1776; the war ended in 1783 with the United States becoming the first country to gain independence from a European power. The current constitution was adopted in 1788, with the first ten amendments, collectively named the Bill of Rights, being ratified in 1791 to guarantee many fundamental civil liberties; the United States embarked on a vigorous expansion across North America throughout the 19th century, acquiring new territories, displacing Native American tribes, admitting new states until it spanned the continent by 1848. During the second half of the 19th century, the Civil War led to the abolition of slavery.
By the end of the century, the United States had extended into the Pacific Ocean, its economy, driven in large part by the Industrial Revolution, began to soar. The Spanish–American War and World War I confirmed the country's status as a global military power; the United States emerged from World War II as a global superpower, the first country to develop nuclear weapons, the only country to use them in warfare, a permanent member of the United Nations Security Council. Sweeping civil rights legislation, notably the Civil Rights Act of 1964, the Voting Rights Act of 1965 and the Fair Housing Act of 1968, outlawed discrimination based on race or color. During the Cold War, the United States and the Soviet Union competed in the Space Race, culminating with the 1969 U. S. Moon landing; the end of the Cold War and the collapse of the Soviet Union in 1991 left the United States as the world's sole superpower. The United States is the world's oldest surviving federation, it is a representative democracy.
The United States is a founding member of the United Nations, World Bank, International Monetary Fund, Organization of American States, other international organizations. The United States is a developed country, with the world's largest economy by nominal GDP and second-largest economy by PPP, accounting for a quarter of global GDP; the U. S. economy is post-industrial, characterized by the dominance of services and knowledge-based activities, although the manufacturing sector remains the second-largest in the world. The United States is the world's largest importer and the second largest exporter of goods, by value. Although its population is only 4.3% of the world total, the U. S. holds 31% of the total wealth in the world, the largest share of global wealth concentrated in a single country. Despite wide income and wealth disparities, the United States continues to rank high in measures of socioeconomic performance, including average wage, human development, per capita GDP, worker productivity.
The United States is the foremost military power in the world, making up a third of global military spending, is a leading political and scientific force internationally. In 1507, the German cartographer Martin Waldseemüller produced a world map on which he named the lands of the Western Hemisphere America in honor of the Italian explorer and cartographer Amerigo Vespucci; the first documentary evidence of the phrase "United States of America" is from a letter dated January 2, 1776, written by Stephen Moylan, Esq. to George Washington's aide-de-camp and Muster-Master General of the Continental Army, Lt. Col. Joseph Reed. Moylan expressed his wish to go "with full and ample powers from the United States of America to Spain" to seek assistance in the revolutionary war effort; the first known publication of the phrase "United States of America" was in an anonymous essay in The Virginia Gazette newspaper in Williamsburg, Virginia, on April 6, 1776. The second draft of the Articles of Confederation, prepared by John Dickinson and completed by June 17, 1776, at the latest, declared "The name of this Confederation shall be the'United States of America'".
The final version of the Articles sent to the states for ratification in late 1777 contains the sentence "The Stile of this Confederacy shall be'The United States of America'". In June 1776, Thomas Jefferson wrote the phrase "UNITED STATES OF AMERICA" in all capitalized letters in the headline of his "original Rough draught" of the Declaration of Independence; this draft of the document did not surface unti
Denali is the highest mountain peak in North America, with a summit elevation of 20,310 feet above sea level. With a topographic prominence of 20,156 feet and a topographic isolation of 4,629 miles, Denali is the third most prominent and third most isolated peak on Earth, after Mount Everest and Aconcagua. Located in the Alaska Range in the interior of the U. S. state of Alaska, Denali is the centerpiece of Preserve. The Koyukon people who inhabit the area around the mountain have referred to the peak as "Denali" for centuries. In 1896, a gold prospector named it "Mount McKinley" in support of then-presidential candidate William McKinley. In August 2015, following the 1975 lead of the State of Alaska, the United States Department of the Interior announced the change of the official name of the mountain to Denali. In 1903, James Wickersham recorded the first attempt at climbing Denali, unsuccessful. In 1906, Frederick Cook claimed the first ascent, proven to be false; the first verifiable ascent to Denali's summit was achieved on June 7, 1913, by climbers Hudson Stuck, Harry Karstens, Walter Harper, Robert Tatum, who went by the South Summit.
In 1951, Bradford Washburn pioneered the West Buttress route, considered to be the safest and easiest route, therefore the most popular in use. On September 2, 2015, the U. S. Geological Survey announced that the mountain is 20,310 feet high, not 20,320 feet, as measured in 1952 using photogrammetry. Denali is a granitic pluton lifted by tectonic pressure from the subduction of the Pacific Plate beneath the North American Plate; the forces that lifted Denali cause many deep earthquakes in Alaska and the Aleutian Islands. The Pacific Plate is seismically active beneath Denali, a tectonic region, known as the "McKinley cluster". Denali has a summit elevation of 20,310 feet above sea level, making it the highest peak in North America and the northernmost mountain above 6,000 meters elevation in the world. Measured from base to peak at some 18,000 ft, it is among the largest mountains situated above sea level. Denali rises from a sloping plain with elevations from 1,000 to 3,000 ft, for a base-to-peak height of 17,000 to 19,000 ft.
By comparison, Mount Everest rises from the Tibetan Plateau at a much higher base elevation. Base elevations for Everest range from 13,800 ft on the south side to 17,100 ft on the Tibetan Plateau, for a base-to-peak height in the range of 12,000 to 15,300 ft. Denali's base-to-peak height is little more than half the 33,500 ft of the volcano Mauna Kea, which lies under water. Denali has two significant summits: the South Summit is the higher one, while the North Summit has an elevation of 19,470 ft and a prominence of 1,270 ft; the North Summit is sometimes counted as sometimes not. Five large glaciers flow off the slopes of the mountain; the Peters Glacier lies on the northwest side of the massif, while the Muldrow Glacier falls from its northeast slopes. Just to the east of the Muldrow, abutting the eastern side of the massif, is the Traleika Glacier; the Ruth Glacier lies to the southeast of the mountain, the Kahiltna Glacier leads up to the southwest side of the mountain. With a length of 44 mi, the Kahiltna Glacier is the longest glacier in the Alaska Range.
The Koyukon Athabaskans who inhabit the area around the mountain have for centuries referred to the peak as Dinale or Denali. The name is based on a Koyukon word for "high" or "tall". During the Russian ownership of Alaska, the common name for the mountain was Bolshaya Gora, the Russian translation of Denali, it was called Densmore's Mountain in the late 1880s and early 1890s after Frank Densmore, an Alaskan prospector, the first European to reach the base of the mountain. In 1896, a gold prospector named it McKinley as political support for then-presidential candidate William McKinley, who became president the following year; the United States formally recognized the name Mount McKinley after President Wilson signed the Mount McKinley National Park Act of February 26, 1917. In 1965, Lyndon B. Johnson declared the north and south peaks of the mountain the "Churchill Peaks", in honor of British statesman Winston Churchill; the Alaska Board of Geographic Names changed the name of the mountain to Denali in 1975, how it is called locally.
However, a request in 1975 from the Alaska state legislature to the United States Board on Geographic Names to do the same at the federal level was blocked by Ohio congressman Ralph Regula, whose district included McKinley's hometown of Canton. On August 30, 2015, just ahead of a presidential visit to Alaska, the Barack Obama administration announced the name Denali would be restored in line with the Alaska Geographic Board's designation. U. S. Secretary of the Interior Sally Jewell issued the order changing the name to Denali on August 28, 2015, effective immediately. Jewell said the change had been "a long time coming"; the renaming of the mountain received praise from Alaska's senior U. S. senator, Lisa Murkowski, who had introduced legislation to accomplish the name change, but it drew criticism from several politicians from Pres
A lake is an area filled with water, localized in a basin, surrounded by land, 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, therefore are distinct from lagoons, are larger and deeper than ponds, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which are flowing. Most lakes streams. Natural lakes are found in mountainous areas, rift zones, areas with ongoing glaciation. Other lakes are found along the courses of mature rivers. In some parts of the world there are many lakes because of chaotic drainage patterns left over from the last Ice Age. All lakes are temporary over geologic time scales, as they will fill in with sediments or spill out of the basin containing them. Many lakes are artificial and are constructed for industrial or agricultural use, for hydro-electric power generation or domestic water supply, or for aesthetic, recreational purposes, or other activities.
The word lake comes from Middle English lake, from Old English lacu, from Proto-Germanic *lakō, from the Proto-Indo-European root *leǵ-. Cognates include Dutch laak, Middle Low German lāke as in: de:Wolfslake, de:Butterlake, German Lache, Icelandic lækur. Related are the English words leak and leach. There is considerable uncertainty about defining the difference between lakes and ponds, no current internationally accepted definition of either term across scientific disciplines or political boundaries exists. For example, limnologists have defined lakes as water bodies which are a larger version of a pond, which can have wave action on the shoreline or where wind-induced turbulence plays a major role in mixing the water column. None of these definitions excludes ponds and all are difficult to measure. For this reason, simple size-based definitions are used to separate ponds and lakes. Definitions for lake range in minimum sizes for a body of water from 2 hectares to 8 hectares. Charles Elton, one of the founders of ecology, regarded lakes as waterbodies of 40 hectares or more.
The term lake is used to describe a feature such as Lake Eyre, a dry basin most of the time but may become filled under seasonal conditions of heavy rainfall. In common usage, many lakes bear names ending with the word pond, a lesser number of names ending with lake are in quasi-technical fact, ponds. One textbook illustrates this point with the following: "In Newfoundland, for example every lake is called a pond, whereas in Wisconsin every pond is called a lake."One hydrology book proposes to define the term "lake" as a body of water with the following five characteristics: it or fills one or several basins connected by straits has the same water level in all parts it does not have regular intrusion of seawater a considerable portion of the sediment suspended in the water is captured by the basins the area measured at the mean water level exceeds an arbitrarily chosen threshold With the exception of the seawater intrusion criterion, the others have been accepted or elaborated upon by other hydrology publications.
The majority of lakes on Earth are freshwater, most lie in the Northern Hemisphere at higher latitudes. Canada, with a deranged drainage system has an estimated 31,752 lakes larger than 3 square kilometres and an unknown total number of lakes, but is estimated to be at least 2 million. Finland has larger, of which 56,000 are large. Most lakes have at least one natural outflow in the form of a river or stream, which maintain a lake's average level by allowing the drainage of excess water; some lakes do not have a natural outflow and lose water by evaporation or underground seepage or both. They are termed endorheic lakes. Many lakes are artificial and are constructed for hydro-electric power generation, aesthetic purposes, recreational purposes, industrial use, agricultural use or domestic water supply. Evidence of extraterrestrial lakes exists. Globally, lakes are outnumbered by ponds: of an estimated 304 million standing water bodies worldwide, 91% are 1 hectare or less in area. Small lakes are much more numerous than large lakes: in terms of area, one-third of the world's standing water is represented by lakes and ponds of 10 hectares or less.
However, large lakes account for much of the area of standing water with 122 large lakes of 1,000 square kilometres or more representing about 29% of the total global area of standing inland water. Hutchinson in 1957 published a monograph, regarded as a landmark discussion and classification of all major lake types, their origin, morphometric characteristics, distribution; as summarized and discussed by these researchers, Hutchinson presented in it a comprehensive analysis of the origin of lakes and proposed what is a accepted classification of lakes according to their origin. This