A drainage basin or catchment area is any area of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water. Drainage basins connect into other drainage basins at elevations in a hierarchical pattern, with smaller sub-drainage basins. Other terms used to describe drainage basins are catchment, catchment basin, drainage area, river basin and water basin. In closed drainage basins the water converges to a point inside the basin, known as a sink, which may be a permanent lake. The drainage basin acts as a funnel by collecting all the water within the covered by the basin. Each drainage basin is separated topographically from adjacent basins by a perimeter, 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.
Drainage basins of the oceans and seas of the world. Grey areas are endorheic basins that do not drain to the oceans, the following is a list of the major ocean basins, About 48. 7% of the worlds land drains to the Atlantic Ocean. The two major mediterranean seas of the world flow to the Atlantic, The Caribbean Sea and Gulf of Mexico basin includes most of the U. S. The Mediterranean Sea basin includes much of North Africa, east-central Africa, Southern and Eastern Europe and the areas of Israel, Lebanon. Just over 13% of the land in the world drains to the Pacific Ocean, the Indian Oceans drainage basin comprises about 13% of Earths land. It drains the eastern coast of Africa, the coasts of the Red Sea and the Persian Gulf, the Indian subcontinent, antarctica comprises approximately eight percent of the Earths land. The five largest river basins, from largest to smallest, are the basins of the Amazon, the Río de la Plata, the Congo, the Nile, and the Mississippi. The three rivers that drain the most water, from most to least, are the Amazon, endorheic drainage basins are inland basins that do not drain to an ocean.
Around 18% of all land drains to endorheic lakes or seas or sinks, the largest of these consists of much of the interior of Asia, which drains into the Caspian Sea, the Aral Sea, and numerous smaller lakes. Some of these, such as the Great Basin, are not single drainage basins but collections of separate, in endorheic bodies of standing water where evaporation is the primary means of water loss, the water is typically more saline than the oceans. An extreme example of this is the Dead Sea, drainage basins have been historically important for determining territorial boundaries, particularly in regions where trade by water has been important
Russia, officially the Russian Federation, is a country in Eurasia. The European western part of the country is more populated and urbanised than the eastern. Russias capital Moscow is one of the largest cities in the world, other urban centers include Saint Petersburg, Yekaterinburg, Nizhny Novgorod. Extending across the entirety of Northern Asia and much of Eastern Europe, Russia spans eleven time zones and incorporates a range of environments. It shares maritime borders with Japan by the Sea of Okhotsk, the East Slavs emerged as a recognizable group in Europe between the 3rd and 8th centuries AD. Founded and ruled by a Varangian warrior elite and their descendants, in 988 it adopted Orthodox Christianity from the Byzantine Empire, beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium. Rus ultimately disintegrated into a number of states, most of the Rus lands were overrun by the Mongol invasion. The Soviet Union played a role in the Allied victory in World War II.
The Soviet era saw some of the most significant technological achievements of the 20th century, including the worlds first human-made satellite and the launching of the first humans in space. By the end of 1990, the Soviet Union had the second largest economy, largest standing military in the world. It is governed as a federal semi-presidential republic, the Russian economy ranks as the twelfth largest by nominal GDP and sixth largest by purchasing power parity in 2015. Russias extensive mineral and energy resources are the largest such reserves in the world, making it one of the producers of oil. The country is one of the five recognized nuclear weapons states and possesses the largest stockpile of weapons of mass destruction, Russia is a great power as well as a regional power and has been characterised as a potential superpower. The name Russia is derived from Rus, a state populated mostly by the East Slavs. However, this name became more prominent in the history, and the country typically was called by its inhabitants Русская Земля.
In order to distinguish this state from other states derived from it, it is denoted as Kievan Rus by modern historiography, an old Latin version of the name Rus was Ruthenia, mostly applied to the western and southern regions of Rus that were adjacent to Catholic Europe. The current name of the country, Россия, comes from the Byzantine Greek designation of the Kievan Rus, the standard way to refer to citizens of Russia is Russians in English and rossiyane in Russian. There are two Russian words which are translated into English as Russians
Rostov Oblast is a federal subject of Russia, located in the Southern Federal District. The oblast has an area of 100,800 square kilometers and its administrative center is the city of Rostov-on-Don, which became the administrative center of the Southern Federal District in 2002. Rostov Oblast borders Ukraine and Volgograd and Voronezh Oblasts in the north and Stavropol Krais in the south, and it is within the Russian Southern Federal District. The Don River, one of Europes largest rivers, flows through the oblast for part of its course, lakes cover only 0. 4% of the oblasts area. The most important ethnicities are the 3,795,607 ethnic Russians, the 77,802 ethnic Ukrainians, the 110,727 ethnic Armenians. Other important groups are the 35,902 Turks,16,493 Belarusians ),13,948 Tatars,17,961 Azeris,11,449 Chechens,16,657 Roma,11,597 Koreans, and 8,296 Georgians. There were 76,498 people belonging to other ethno-cultural groupings,76,735 people were registered from administrative databases, and could not declare an ethnicity.
It is estimated that the proportion of ethnicities in this group is the same as that of the declared group, according to a 2012 official survey 49. In addition, 26% of the population declares to be spiritual but not religious, 12% is atheist, major industries of Rostov Oblast are agriculture, agricultural industry, food processing, heavy industry and automobile manufacture. Областной закон №19-ЗС от29 мая1996 г, Областного закона №442-ЗС от23 ноября2015 г. «О поправках к Уставу Ростовской области», Вступил в силу6 июня1996 г. Опубликован, Наше время, №98–99,6 июня1996 г, Областной Закон №30-ЗС от10 октября1996 г. Вступил в силу с момента опубликования, Опубликован, Наше время, №196,31 октября1996 г. Official website of Rostov Oblast Russian South
Volgograd Oblast is a federal subject of Russia. The population was 2,610,161 in the 2010 Census, borders length,2,221.9 kilometers Volgograd Oblast borders with Saratov, Rostov and Voronezh Oblasts, as well as with the Republic of Kalmykia of Russia and with Kazakhstan. Volgograd has more than 200 rivers and streams, the major ones include, The Volga River The Don River The Medveditsa River The Khopyor River Stalingrad Oblast was established on December 5,1936 on the territory of former Stalingrad Krai. The oblast was given its present name on November 10,1961, the Charter of Volgograd Oblast provides the fundamental law of the region. The Legislative Assembly of Volgograd Oblast is the provinces standing legislative body, the Legislative Assembly exercises its authority by passing laws and other legal acts and by supervising the implementation and observance of the laws and other legal acts passed by it. It is estimated that the proportion of ethnicities in this group is the same as that of the declared group, according to a 2012 official survey 54.
In addition, 18% of the population declares to be spiritual but not religious, 12% is atheist, and 6. 5% follows other religions or did not give an answer to the question. Governor of Volgograd Oblast is Anatoliy Brovko Both the flag and the coat of arms of Volgograd Oblast include an image of The Motherland Calls, primary branches of economics are agriculture, food production, heavy industry and petroleum refining. Volga Hydroelectric Station operates on the Volga River, list of Chairmen of the Volgograd Oblast Duma Volgograd floating landing Волгоградская областная Дума. Закона №90-ОД от10 июля2015 г, «О внесении изменений в статью2 Устава Волгоградской области от24 февраля2012 г. Вступил в силу по истечении десяти дней после дня официального опубликования, Опубликован, Волгоградская правда, №35,29 февраля2012 г. Исполнительный комитет Волгоградского областного Совета депутатов трудящихся, Административно-территориальное деление на1 июля1968 года. Official website of Volgograd Oblast Central Eurasian Information Resource, Images of Volgograd Oblast - University of Washington Digital Collections