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56-685: The northern slopes are part of the watershed of the Yenisei River , facing the western Sayan Mountains . The eastern end touches the large watershed of the Selenge River in Mongolia . The foothills of the southern slopes cross into Mongolian territory. They form the northern limits of a large basin of steppes that extends south to the Mongolian Altay Mountains and includes the salt lake Uvs Nuur . The western end

112-531: A Samoyed derivation has been proposed, its precise origins remain unclear. Today, the word survives only in Sayan Turkic languages : in Tuvan as xem хем, meaning "river", and in its sister language, Tofa , as hem hем, also meaning "river". These languages are considered to have had close contact with those mentioned above in ancient times. Additionally, there are just over 50 river names containing

168-484: A sink , which may be a permanent lake, a dry lake , or a point where surface water is lost underground . Drainage basins are similar but not identical to hydrologic units , which are drainage areas delineated so as to nest into a multi-level hierarchical drainage system . Hydrologic units are defined to allow multiple inlets, outlets, or sinks. In a strict sense, all drainage basins are hydrologic units but not all hydrologic units are drainage basins. About 48.71% of

224-414: A watershed , though in other English-speaking places, "watershed" is used only in its original sense, that of the drainage divide line. A drainage basin's boundaries are determined by watershed delineation , a common task in environmental engineering and science. In a closed drainage basin, or endorheic basin , rather than flowing to the ocean, water converges toward the interior of the basin, known as

280-454: A drainage basin, and there are different ways to interpret that data. In the unlikely event that the gauges are many and evenly distributed over an area of uniform precipitation, using the arithmetic mean method will give good results. In the Thiessen polygon method, the drainage basin is divided into polygons with the rain gauge in the middle of each polygon assumed to be representative for

336-540: A drainage boundary is referred to as watershed delineation . Finding the area and extent of a drainage basin is an important step in many areas of science and engineering. Most of the water that discharges from the basin outlet originated as precipitation falling on the basin. A portion of the water that enters the groundwater system beneath the drainage basin may flow towards the outlet of another drainage basin because groundwater flow directions do not always match those of their overlying drainage network. Measurement of

392-497: Is a compound word of unconfirmed Old Kyrgyz (or inspired by Tuvan language?) ene (эне), meaning "great-grandmother; nanny" + say (сай), meaning "gravel; ford". However, the above considerations, except Vasmer's, remain speculative false etymologies , as they do not refer to the dictionaries of the respective languages. Researchers are encouraged to conduct more detailed studies based on proper contemporary linguistic sources and historical documents . Studies have shown that

448-845: Is formed between the Gyda Peninsula and the Taymyr Peninsula . It is the central one of three large Siberian rivers that flow into the Arctic Ocean (the other two being the Ob and the Lena ). The maximum depth of the Yenisey is 61 metres (200 ft) and the average depth is 14 metres (45 ft). The Yenisey proper, from the confluence of its source rivers the Great Yenisey and Little Yenisey at Kyzyl to its mouth in

504-568: Is found in the 14th-century History of Yuan , vol. 63. These contacts were made by the Chinese as they approached the upper Yenisei River from the south. The characters jian "劔" (or jian "劍") and qian "謙" have been compared to Käm in Orkhon inscriptions from the 8th century. The term Kem كيم is also found in the 13th‒14th-century Oirat Biography in Jami' al-Tawarikh . Furthermore, even in

560-610: Is located near the northern Altay Mountains in the Russian Altai Republic . This Mongolia location article is a stub . You can help Misplaced Pages by expanding it . This Tuva location article is a stub . You can help Misplaced Pages by expanding it . Yenisei River 18,050 m /s (637,000 cu ft/s) (Period of data: 1940–2017) 588 km /a (18,600 m /s) The Yenisey ( / ˌ j ɛ n ɪ ˈ s eɪ / YEN -iss- AY ; Russian : Енисе́й , pronounced [jɪnʲɪˈsʲej] )

616-686: Is nearby on the Arctic Ocean's Taymyr Peninsula . The largest tributaries of the Yenisey are, from source to mouth: A significant feature of the Upper Yenisei is Lake Baikal , the deepest and oldest lake in the world. The Brekhovskie Islands (Russian-language article: Бреховские острова ) lie in the Yenisey estuary and have an area of some 1,400,000 hectares. They provide a wetland habitat for rare and endangered birds and are an internationally important nesting and breeding area for several types of waterfowl . The most north-easterly of

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672-487: Is referred to as " watershed management ". In Brazil , the National Policy of Water Resources, regulated by Act n° 9.433 of 1997, establishes the drainage basin as the territorial division of Brazilian water management. When a river basin crosses at least one political border, either a border within a nation or an international boundary, it is identified as a transboundary river . Management of such basins becomes

728-447: Is separated from adjacent basins by a perimeter, the drainage divide , made up of a succession of elevated features, such as ridges and hills . A basin may consist of smaller basins that merge at river confluences , forming a hierarchical pattern . Other terms for a drainage basin are catchment area , catchment basin , drainage area , river basin , water basin , and impluvium . In North America, they are commonly called

784-614: Is the Dead Sea . Drainage basins have been historically important for determining territorial boundaries, particularly in regions where trade by water has been important. For example, the English crown gave the Hudson's Bay Company a monopoly on the fur trade in the entire Hudson Bay basin, an area called Rupert's Land . Bioregional political organization today includes agreements of states (e.g., international treaties and, within

840-892: Is the fifth-longest river system in the world, and the largest to drain into the Arctic Ocean . Rising in Mungaragiyn-gol in Mongolia, it follows a northerly course through Lake Baikal and the Krasnoyarsk Dam before draining into the Yenisey Gulf in the Kara Sea . The Yenisey divides the Western Siberian Plain in the west from the Central Siberian Plateau to the east; it drains a large part of central Siberia . Its delta

896-713: The African Great Lakes , the interiors of Australia and the Arabian Peninsula , and parts in Mexico and the Andes . Some of these, such as the Great Basin, are not single drainage basins but collections of separate, adjacent closed basins. In endorheic bodies of water where evaporation is the primary means of water loss, the water is typically more saline than the oceans. An extreme example of this

952-828: The Continental Divide , northern Alaska and parts of North Dakota , South Dakota , Minnesota , and Montana in the United States, the north shore of the Scandinavian peninsula in Europe, central and northern Russia, and parts of Kazakhstan and Mongolia in Asia , which totals to about 17% of the world's land. Just over 13% of the land in the world drains to the Pacific Ocean . Its basin includes much of China, eastern and southeastern Russia, Japan,

1008-536: The Kara Sea , is 3,487 km (2,167 mi) long. From the source of its tributary the Selenga , it is 5,075 km (3,153 mi) long. It has a drainage basin of 2,580,000 km (1,000,000 sq mi). The Yenisey flows through the Russian federal subjects Tuva , Khakassia and Krasnoyarsk Krai . The city of Krasnoyarsk is situated far upstream on the Yenisey, and the industrial city of Norilsk

1064-714: The Korean Peninsula , most of Indochina, Indonesia and Malaysia, the Philippines, all of the Pacific Islands , the northeast coast of Australia , and Canada and the United States west of the Continental Divide (including most of Alaska), as well as western Central America and South America west of the Andes. The Indian Ocean 's drainage basin also comprises about 13% of Earth's land. It drains

1120-619: The Nganasan word "Jentajea", the Enets "Jeddosi", and the Selkup "N'andesi", all meaning "Yenisei River", might correspond to unidentified Samoyed languages, probably quoted Matthias Castrén 's vocabulary. V. K. Nikonov has proposed that the word could derive from "iondessi" (иондесси), meaning "big river" in Selkup, Khanty , or even Evenki . More recently, some have speculated that "Yenisei"

1176-550: The Siberian sturgeon ( Acipenser baerii ). The Yenisey valley is habitat for numerous flora and fauna, with Siberian pine and Siberian larch being notable tree species. In prehistoric times Scots pine , Pinus sylvestris , was abundant in the Yenisey valley c.  6000 BC . There are also numerous bird species present in the watershed, including, for example, the hooded crow , Corvus cornix . The Taimyr herd of tundra reindeer ( Rangifer tarandus sibiricus ),

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1232-797: The Soviet Union . The first written mention of the Yenisei River dates back to the 7th century in Tang Dynasty China, at the time of contact with Yenisei Kyrgyz of this region. The word Jian shui (劔水, "Jian River") appears in Book of Zhou , vol. 50, and History of the Northern Dynasties , vol. 99, while Jian he (劍河, "Jian River") appears in New Book of Tang , vol. 217. In addition, Qian he (謙河, "Qian River")

1288-528: The Sym . In 1862 Paul Theodor von Krusenstern attempted to navigate with two ships from Murmansk through the Kara Sea to the delta of the river Yenissei, but unfortunately was shipwrecked before obtaining success. During World War II , Nazi Germany and the Japanese Empire agreed to divide Asia along a line that followed the Yenisey to the border of China and then along the border of China and

1344-591: The Taz River . It is believed that the name of the Yenisei River was transmitted, either directly or indirectly, from Samoyed-speaking peoples in the region with whom the Russians had contact. This contact eventually led to the adoption of the name "Yenisei", with a Russian accent. Additionally, by the end of the 16th century, the Yenisei River was already known to Dutch navigators, who referred to it as "Gilissi", "Gelissi", or "Geniscea", among other names. Although

1400-565: The Yugh people have lived along the banks of the Yenisey since ancient times, and this region is the location of the Yeniseian language family . The Ket, numbering about 1000, are the only survivors today of those who originally lived throughout central southern Siberia near the river banks. Their extinct relatives included the Kotts, Assans, Arins, Baikots and Pumpokols who lived further upriver to

1456-668: The 18th century, Chinese maps show ᡴᡝ᠊ᠮ᠊ᠠ ᠪᡳ᠊ᡵᠠ Kem bira “Kem River” ( the Kangxi Imperial Atlas of China (康煕皇輿全覧図) in 1717), ᡴᡝ᠊ᠮ᠊ᠠ ᡳ ᠪᠣ᠊ᠮ Kem-i bom “Cliffs of the Kem River” ( the Yongzheng Atlas (雍正十排図) in 1727 or 1728), 伊克穆必拉 ( yeke Kem bira ) “Great Kem River” ( the Ch'ien-lung Atlas (乾隆内府輿図) in 1769). The etymology of Käm is not believed to be of Turkic origin, and although

1512-670: The Turks and the Chinese and other legends. There are also examples of Uyghur poetry, though most have survived only in Chinese translation. Wheat from the Yenisey was sold by Muslims and Uighurs during inadequate harvests to Bukhara and Soghd during the Tahirid era. Russians first reached the upper Yenisey in 1605, travelling from the Ob, up the Ket , portaging and then down the Yenisey as far as

1568-623: The US, interstate compacts ) or other political entities in a particular drainage basin to manage the body or bodies of water into which it drains. Examples of such interstate compacts are the Great Lakes Commission and the Tahoe Regional Planning Agency . In hydrology , the drainage basin is a logical unit of focus for studying the movement of water within the hydrological cycle . The process of finding

1624-432: The Yenisey basin are relatively widespread Euro- Siberian or Siberian species, such as northern pike ( Esox lucius ), common roach ( Rutilus rutilus ), common dace ( Leuciscus leuciscus ), Siberian sculpin ( Cottus poecilopus ), European perch ( Perca fluviatilis ) and Prussian carp ( Carassius gibelio ). The basin is also home to many salmonids (trout, whitefish , charr , graylings, taimen and relatives) and

1680-423: The Yenisey suffers from contamination caused by radioactive discharges from a factory that produced bomb-grade plutonium in the secret city of Krasnoyarsk-26, now known as Zheleznogorsk . Drainage basin A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth , or flows into another body of water , such as a lake or ocean . A basin

1736-406: The basin, it can form tributaries that change the structure of the land. There are three different main types, which are affected by the rocks and ground underneath. Rock that is quick to erode forms dendritic patterns, and these are seen most often. The two other types of patterns that form are trellis patterns and rectangular patterns. Rain gauge data is used to measure total precipitation over

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1792-430: The discharge of water from a basin may be made by a stream gauge located at the basin's outlet. Depending on the conditions of the drainage basin, as rainfall occurs some of it seeps directly into the ground. This water will either remain underground, slowly making its way downhill and eventually reaching the basin, or it will permeate deeper into the soil and consolidate into groundwater aquifers. As water flows through

1848-441: The drainage area is dependent on the soil type. Certain soil types such as sandy soils are very free-draining, and rainfall on sandy soil is likely to be absorbed by the ground. However, soils containing clay can be almost impermeable and therefore rainfall on clay soils will run off and contribute to flood volumes. After prolonged rainfall even free-draining soils can become saturated , meaning that any further rainfall will reach

1904-697: The drainage basin to the mouth, and may accumulate there, disturbing the natural mineral balance. This can cause eutrophication where plant growth is accelerated by the additional material. Because drainage basins are coherent entities in a hydrological sense, it has become common to manage water resources on the basis of individual basins. In the U.S. state of Minnesota , governmental entities that perform this function are called " watershed districts ". In New Zealand, they are called catchment boards. Comparable community groups based in Ontario, Canada, are called conservation authorities . In North America, this function

1960-857: The eastern coast of Africa, the coasts of the Red Sea and the Persian Gulf , the Indian subcontinent , Burma, and most parts of Australia . The five largest river basins (by area), from largest to smallest, are those of the Amazon (7 million km ), the Congo (4 million km ), the Nile (3.4 million km ), the Mississippi (3.22 million km ), and the Río de la Plata (3.17 million km ). The three rivers that drain

2016-636: The exact spelling varied, these are phonetically similar to "Yenisei". In particular, the modern Dutch pronunciation of "Geniscea" as [xɛnisə] is quite close to "Yenisei". The term "Yenisei" (Енисей) appeared in Russian literature slightly later, around 1600, in the form that is still used today. Unlike in Dutch, the Russian spelling has been relatively stable since the 17th century, with only minor variations such as "Yeniseya" (Енисея) or "Yenisya" (Енися). The etymology of "Yenisei" remains unclear. Renowned linguist Max Vasmer , for instance, has suggested that

2072-646: The future Tsar Nicholas II on his voyage to Siberia, and later conveyed Vladimir Lenin to prison. Engineers attempted to place river steamers in regular service on the river during the building of the Trans-Siberian Railway. The boats were needed to bring in the rails, engines and supplies. Captain Joseph Wiggins sailed the Orestes with rail in 1893. However, the sea and river route proved very difficult with several ships lost at sea and on

2128-583: The greatest portion of western Sub-Saharan Africa , as well as Western Sahara and part of Morocco . The two major mediterranean seas of the world also flow to the Atlantic. The Caribbean Sea and Gulf of Mexico basin includes most of the U.S. interior between the Appalachian and Rocky Mountains , a small part of the Canadian provinces of Alberta and Saskatchewan , eastern Central America ,

2184-435: The ground and along rivers it can pick up nutrients , sediment , and pollutants . With the water, they are transported towards the outlet of the basin, and can affect the ecological processes along the way as well as in the receiving water body . Modern use of artificial fertilizers , containing nitrogen (as nitrates ), phosphorus , and potassium , has affected the mouths of drainage basins. The minerals are carried by

2240-781: The ground at its terminus, the area can go by several names, such playa, salt flat, dry lake , or alkali sink . The largest endorheic basins are in Central Asia , including the Caspian Sea , the Aral Sea , and numerous smaller lakes. Other endorheic regions include the Great Basin in the United States, much of the Sahara Desert , the drainage basin of the Okavango River ( Kalahari Basin ), highlands near

2296-417: The islands of the Caribbean and the Gulf, and a small part of northern South America. The Mediterranean Sea basin, with the Black Sea , includes much of North Africa , east-central Africa (through the Nile River ), Southern , Central, and Eastern Europe , Turkey , and the coastal areas of Israel , Lebanon , and Syria . The Arctic Ocean drains most of Western Canada and Northern Canada east of

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2352-417: The islands, Nosonovskij Ostrov ("Nose Island") was visited by Fridtjof Nansen in 1913. The Yenisey basin (excluding Lake Baikal and lakes of the Khantayka headwaters) is home to 55 native fish species, including two endemics : Gobio sibiricus (a gobionine cyprinid ) and Thymallus nigrescens (a grayling ). The grayling is restricted to Khövsgöl Nuur and its tributaries. Most fish found in

2408-414: The largest reindeer herd in the world, migrates to winter grazing ranges along the Yenisey. It had an estimated 800,000-850,000 individuals as of 2010, but has peaked at over one million. River steamers first came to the Yenisei River in 1864 and were brought in from the Netherlands and the United Kingdom across the icy Kara Sea. One was the steamer Nikolai . The steamship Thames attempted to explore

2464-409: The most water, from most to least, are the Amazon, Ganges , and Congo rivers. Endorheic basin are inland basins that do not drain to an ocean. Endorheic basins cover around 18% of the Earth's land. Some endorheic basins drain to an Endorheic lake or Inland sea . Many of these lakes are ephemeral or vary dramatically in size depending on climate and inflow. If water evaporates or infiltrates into

2520-418: The rainfall on the area of land included in its polygon. These polygons are made by drawing lines between gauges, then making perpendicular bisectors of those lines form the polygons. The isohyetal method involves contours of equal precipitation are drawn over the gauges on a map. Calculating the area between these curves and adding up the volume of water is time-consuming. Isochrone maps can be used to show

2576-572: The responsibility of the countries sharing it. Nile Basin Initiative , OMVS for Senegal River , Mekong River Commission are a few examples of arrangements involving management of shared river basins. Management of shared drainage basins is also seen as a way to build lasting peaceful relationships among countries. The catchment is the most significant factor determining the amount or likelihood of flooding . Catchment factors are: topography , shape, size, soil type, and land use (paved or roofed areas). Catchment topography and shape determine

2632-461: The river rather than being absorbed by the ground. If the surface is impermeable the precipitation will create surface run-off which will lead to higher risk of flooding; if the ground is permeable, the precipitation will infiltrate the soil. Land use can contribute to the volume of water reaching the river, in a similar way to clay soils. For example, rainfall on roofs, pavements , and roads will be collected by rivers with almost no absorption into

2688-410: The river, overwintered in 1876, but was damaged in the ice and eventually wrecked in the river. Success came with the steamers Frazer , Express in 1878 and, the next year, Moscow hauling supplies in and wheat out. The Dalman reached Yeniseisk in 1881. Imperial Russia placed river steamers on the massive river in an attempt to free up communication with land-locked Siberia. One, St. Nicholas took

2744-469: The river. Both the Ob and Yenisey mouths feed into very long inlets, several hundred kilometres in length, which are shallow, ice bound and prone to high winds and thus treacherous for navigation. After the completion of the railway, river traffic reduced to only local service as the Arctic route and long river proved much too indirect a route. The first recreation team to navigate the Yenisey's entire length, including its violent upper tributary in Mongolia,

2800-525: The south. The modern Ket lived in the eastern middle areas of the river before being assimilated politically into Russia during the 17th through 19th centuries. Some of the earliest known evidence of Turkic origins was found in the Yenisey Valley in the form of stelae , stone monoliths and memorial tablets dating from between the seventh and ninth centuries AD, along with some documents that were found in China's Xinjiang region . The written evidence gathered from these sources tells of battles fought between

2856-418: The speed with which the runoff reaches a river. A long thin catchment will take longer to drain than a circular catchment. Size will help determine the amount of water reaching the river, as the larger the catchment the greater the potential for flooding. It is also determined on the basis of length and width of the drainage basin. Soil type will help determine how much water reaches the river. The runoff from

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2912-434: The suffix -kem -кем in the Altai Republic , and the term Kim (Ким) as in Kim suγ (Ким суғ), meaning "Yenisei River" barely exists in Khakas . All of these instances are confined to the region in and around the present-day Republic of Tuva . Meanwhile, in the 17th century, Russians reached the lower part of the Yenisei River from the northwest; along the way, by 1600, the Tobolsk Cossacks built Fort Mangazeya by

2968-415: The time taken for rain to reach the river, while catchment size, soil type, and development determine the amount of water to reach the river. Generally, topography plays a big part in how fast runoff will reach a river. Rain that falls in steep mountainous areas will reach the primary river in the drainage basin faster than flat or lightly sloping areas (e.g., > 1% gradient). Shape will contribute to

3024-477: The time taken for runoff water within a drainage basin to reach a lake, reservoir or outlet, assuming constant and uniform effective rainfall. Drainage basins are the principal hydrologic unit considered in fluvial geomorphology . A drainage basin is the source for water and sediment that moves from higher elevation through the river system to lower elevations as they reshape the channel forms. Drainage basins are important in ecology . As water flows over

3080-405: The world's land drains to the Atlantic Ocean . In North America , surface water drains to the Atlantic via the Saint Lawrence River and Great Lakes basins, the Eastern Seaboard of the United States, the Canadian Maritimes , and most of Newfoundland and Labrador . Nearly all of South America east of the Andes also drains to the Atlantic, as does most of Western and Central Europe and

3136-400: Was an Australian-Canadian expedition completed in September 2001. Ben Kozel , Tim Cope, Colin Angus and Remy Quinter were on this team. Both Kozel and Angus wrote books detailing this expedition, and a documentary was produced for National Geographic Television. A canal inclined plane was built on the river in 1985 at the Krasnoyarsk Dam . Nomadic tribes such as the Ket people and

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