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List Of Largest Unfragmented Rivers
This is a list of the largest river basins without fragmentation by dams in their catchments, ordered by average annual discharge. To qualify for inclusion, a river must not only have no dams on its “main” stem, but also no dams on any tributary. For this reason, major world rivers such as the Amazon, Lena, Irrawaddy, Amur, and Fraser are disqualified because of dams on tributary streams. Many of the rivers in this list have uncertain discharges. With the exception of those in Russia, streamgauges have seldom (if ever) been placed on the majority of the largest unfragmented river systems, due to the remoteness and/or ruggedness of the terrain in which they are located. Apart from the Fly which is clearly the largest, all ranks listed here are not perfectly certain, and there also exist a number of rivers in Sundaland that might qualify with reliable discharge data, such as the Kapuas. See also * List of longest undammed rivers References * Nilsson, Christer; Reidy, ...
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Pechora River
The Pechora (; Komi: Печӧра; Nenets: Санэроˮ яха) is the sixth-longest river in Europe. Flowing from Northwest Russia and into the Arctic Ocean, it lies mostly in the Komi Republic but the northernmost part crosses the Nenets Autonomous Okrug. Geography The Pechora is long (a little shorter than the Columbia River) and its basin is , or about the same size as Finland. By mean annual discharge it ranks third in Europe, after the Volga and Danube. Its discharge is about three quarters that of the Danube and a little more than its sister, the Northern Dvina, and is the largest of any river with no dams in its basin outside of New Guinea. West of its lower course is the Timan Ridge. East of the basin along the west flank of the Urals is the Yugyd Va National Park. Also in the basin is the Virgin Komi Forests, the largest virgin forest in Europe. In the far northeast of the basin on the Usa River is the large coal center of Vorkuta. The river was once an import ...
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Khatanga River
The Khatanga () is a river in Krasnoyarsk Krai in Russia. The river is navigable. The river port of Khatanga is located on the river. Course It begins at the confluence of the rivers Kotuy and Kheta. The Khatanga is long ( including its headwater Kotuy); the area of its basin is .Хатанга
It flows into the of the Laptev Sea, forming an

Kikori River
The Kikori River is a major river in southern Papua New Guinea on the island of New Guinea. The river has a total length of and flows southeast into the Gulf of Papua, with its delta at the head of the gulf. The settlement of Kikori lies on the delta. Course The headwaters of the Kikori, the ''Hegigio'' and the ''Tagari'', originate in the south-eastern part of the ''Muller plateau''. The Hegigio descends through a wild gorge into the ''Papua Plain''. From the mouth of the ''Mubi River'', it is known as the Kikori and flows into the Gulf of Papua, with a large marshy delta. Geography and hydrology The catchment area extends from alpine grasslands of the Southern Highlands to mangrove wetlands of the mouth at Gulf of Papua. The Kikori arises at the confluence of the Hegigio with the ''Mubi River'' or ''Digimu River'', into which Lake Kutubu drained. The average rainfall in the Kikori catchment is . The city of the same name is located on the right bank just before its conflu ...
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Bay Of Bengal
The Bay of Bengal is the northeastern part of the Indian Ocean. Geographically it is positioned between the Indian subcontinent and the Mainland Southeast Asia, Indochinese peninsula, located below the Bengal region. Many South Asian and Southeast Asian Countries of the Bay of Bengal, countries are dependent on the Bay of Bengal. Geopolitically, the bay is bounded on the west and northwest by India, on the north by Bangladesh, and on the east by Myanmar and the Andaman and Nicobar Islands of India. Its southern limit is a line between Sangaman Kanda, Sri Lanka, and the northwesternmost point of Sumatra, Indonesia. Cox's Bazar Beach, Cox's Bazar, the longest sea beach in the world and Sundarbans, the largest mangrove forest and the natural habitat of the Bengal tiger, are located along the bay. The Bay of Bengal occupies an area of . A number of large rivers flow into the Bay of Bengal: the Ganges–Hooghly River, Hooghly, the Padma River, Padma, the Brahmaputra River, Brahmaputr ...
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India
India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since 2023; and, since its independence in 1947, the world's most populous democracy. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is near Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Thailand, Myanmar, and Indonesia. Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago., "Y-Chromosome and Mt-DNA data support the colonization of South Asia by modern humans originating in Africa. ... Coalescence dates for most non-European populations averag ...
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Burma
Myanmar, officially the Republic of the Union of Myanmar; and also referred to as Burma (the official English name until 1989), is a country in northwest Southeast Asia. It is the largest country by area in Mainland Southeast Asia and has a population of about 55 million. It is bordered by India and Bangladesh to its northwest, China to its northeast, Laos and Thailand to its east and southeast, and the Andaman Sea and the Bay of Bengal to its south and southwest. The country's capital city is Naypyidaw, and its largest city is Yangon (formerly Rangoon). Early civilisations in the area included the Tibeto-Burman-speaking Pyu city-states in Upper Myanmar and the Mon kingdoms in Lower Myanmar. In the 9th century, the Bamar people entered the upper Irrawaddy valley, and following the establishment of the Pagan Kingdom in the 1050s, the Burmese language and culture and Theravada Buddhism slowly became dominant in the country. The Pagan Kingdom fell to Mongol invas ...
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Kaladan River
The Kaladan (, ) or Kissapanadi River (, ), also known as the Beino, Bawinu and Kolodyne, is a river in the eastern Mizoram, Mizoram State of India, and in Chin State and Rakhine State of western Myanmar. The Kaladan River is called the Chhimtuipui River in India.Still under construction[, The Statesman. It forms the international border between India and Myanmar between 22° 47′ 10" N (where its tributary, the Tiau River
, joins it) and 22° 11′ 06" N.NF 46-7 "Gangaw, Burma" ...
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Caribbean Sea
The Caribbean Sea is a sea of the Atlantic Ocean, North Atlantic Ocean in the tropics of the Western Hemisphere, located south of the Gulf of Mexico and southwest of the Sargasso Sea. It is bounded by the Greater Antilles to the north from Cuba to Puerto Rico, the Lesser Antilles to the east from the Virgin Islands to Trinidad and Tobago, South America to the south from the Venezuela, Venezuelan coastline to the Colombia, Colombian coastline, and Central America and the Yucatán Peninsula to the west from Panama to Mexico. The Geopolitics, geopolitical region around the Caribbean Sea, including the numerous islands of the West Indies and adjacent coastal areas in the mainland of the Americas, is known as the Caribbean. The Caribbean Sea is one of the largest seas on Earth and has an area of about . The sea's deepest point is the Cayman Trough, between the Cayman Islands and Jamaica, at below sea level. The Caribbean coastline has many gulfs and bays: the Gulf of Gonâve, the Gul ...
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Colombia
Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuela to the east and northeast, Brazil to the southeast, Peru and Ecuador to the south and southwest, the Pacific Ocean to the west, and Panama to the northwest. Colombia is divided into 32 Departments of Colombia, departments. The Capital District of Bogotá is also the List of cities in Colombia by population, country's largest city hosting the main financial and cultural hub. Other major urban areas include Medellín, Cali, Barranquilla, Cartagena, Colombia, Cartagena, Santa Marta, Cúcuta, Ibagué, Villavicencio and Bucaramanga. It covers an area of 1,141,748 square kilometers (440,831 sq mi) and has a population of around 52 million. Its rich cultural heritage—including language, religion, cuisine, and art—reflects its history as a co ...
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Atrato River
The Atrato River () is a river of northwestern Colombia. It rises in the slopes of the Western Cordillera and flows almost due north to the Gulf of Urabá (or Gulf of Darién), where it forms a large, swampy delta. Its course crosses the Chocó Department, forming that department's border with neighboring Antioquia in two places. Its total length is about , and it is navigable as far as Quibdó (400 km / 250 mi), the capital of the department. In 2016, the Constitutional Court of Colombia granted the river legal rights of personhood after years of degradation of the river basin from large-scale mining and illegal logging practices, which severely impacted the traditional ways of life for Afro-Colombians and Indigenous people. Drainage area The river’s total length is about , and it is navigable as far as Quibdó (400 km / 250 mi), the capital of the department. The basin occupies an area of and has an average annual precipitation of >5,000 m ...
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Volga River
The Volga (, ) is the longest river in Europe and the longest endorheic basin river in the world. Situated in Russia, it flows through Central Russia to Southern Russia and into the Caspian Sea. The Volga has a length of , and a catchment area of .«Река Волга»
, Russian State Water Registry
It is also Europe's largest river in terms of average discharge at delta – between and – and of . It is widely regarded as the national river of