List of rivers by length
There are many long rivers in the world, but which ones are the longest? Naturally, there is a disagreement over the answer to this question. While The Nile has traditionally been considered to lớn be longest in the world, the Amazon has some pretty fierce defenders as well. The debate arises over the difficulty in determining the full extent of a river, and also because measurements differ according to who measured them.
Another source of disagreement is the role played by tributaries, with some scientists arguing for their inclusion while others leave them out. Luckily, when determining length, several major rivers stand out from the crowd. Here are a few, và the reasons for why they made the list:
Definition:
There are many factors in determining the precise length of a river. These include the source, the identification (or the definition) of the river"s mouth, & the scale of measurement when determining the river length between source and mouth. As a result, the length measurements of many rivers are only approximations.
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A river"s "true source" is considered to be the source of whichever tributary is farthest from the mouth, but this tributary may or may not have the same name as the main stem river. Furthermore, it is sometimes hard to state exactly where a river begins – especially rivers that are formed by ephemeral streams, swamps, or changing lakes.
The mouth of a river is hard lớn determine in cases where the river has a large estuary that gradually widens & opens into the ocean. Some rivers bởi not have a mouth, và instead dwindle to lớn very low water volume and disappear underground. A river may also have multiple channels, or anabranches, and it may not be clear how khổng lồ measure the length through a lake.
Seasonal và annual changes may alter rivers as well, not khổng lồ mention cycles of erosion and flooding, dams, levees, và geological engineering. In addition, the length of meanders can change significantly over time when a new channel cuts across a narrow strip of land, bypassing a large river bend.
The Nile:
The Nile River, located in Africa, is listed as being 6,853 kilometers (4,258 miles) long, & is hence commonly considered lớn be the longest river in the world. This river và its water resources are shared by eleven countries – Tanzania, Uganda, Rwanda, Burundi, Congo-Kinshasa, Kenya, Ethiopia, Eritrea, South Sudan, the Sudan và Egypt.
In ancient times, its existence was closely tied to the rise of civilization in the Near East, being the main source of irrigation & fresh water for multiple Egyptian dynasties. Today, it remains the primary water source for both Egypt và the Sudan.
The Amazon River is the longest river in South America, & the largest river in the world in terms of water discharge. This river has a series of major river systems in Colombia, Ecuador & Peru. At roughly 6,437 km (4,000 mi) in length, it is also considered khổng lồ be the second-longest river in the world.
However, Brazilian scientists claimed to have found the most distant source of the Amazon in the Andes. This source is apparently a glacial stream emanating from the peak of Nevado Mismi in the Peruvian Andes, roughly 700 km (430 mi) southeast of Lima. If this is correct, then the Amazon is in fact 6.800 kilometers (4,225 miles) long, making it the world"s longest.
The Yangtze:
The third longest river in the world is the Yangtze – or as it"s known in China, the Chang Jiang River. The Yangtze is 6,380 kilometers (3,964 miles) in length, making it the longest river in Asia. It originates from the glaciers of the Qinghai-Tibet Plateau in Qinghai province, flows eastward across southwest, central và eastern China, & then empties into the East đài loan trung quốc Sea at Shanghai.
The Yangtze River has played a large role in the history, culture and economy of China, and continues to do so to this day. In addition to running through multiple ecosystems in China, its existence was also pivotal to lớn human settlement, the development of agriculture, and the rise of civilization in East Asia.
Today, the prosperous Yangtze River Delta generates as much as 20% of China"s Gross Domestic sản phẩm (GDP), và the Three Gorges Dam – located on the Yangtze River near the town of Sandouping – is the largest hydro-electric power nguồn station in the world. Because of the impact of human infrastructure, some sections of the river are now protected wildlife preserves.
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The Mississippi-Missouri-Jefferson:
At 6,275 kilometers (3,902 miles) the Mississippi-Missouri-Jefferson River system is the fourth longest in the world và the longest river in the United States. Although each river separately would not be in the đứng top five, these three rivers are grouped together into one because the Missouri River meets the Mississippi near the thành phố of St. Louis, while the Missouri connects khổng lồ the Jefferson river in Montana.
However, the main thrust of the Mississippi runs north-south, rising in northern Minnesota & meandering slowly southwards for 3,730 km (2,320 miles) before reaching the Mississippi River Delta at the Gulf of Mexico.
With its many tributaries, the Mississippi"s watershed drains all or parts of 31 U.S. States & 2 Canadian provinces between the Rocky & Appalachian Mountains. It also borders and/or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, & Louisiana.
The Mississippi River and its tributaries have a long history of significance to lớn Native American cultures. Many nations lived along its river banks, most of which were hunters & gathers who used the river as a source of water và for transportation. But for some – such as the Mound builders – the river was key to lớn the formation of prolific agricultural societies.
The arrival of Europeans in the 1500s changed the native way of life drastically as first explorers, then settlers, ventured into the basin in increasing numbers và colonized the area. Initially a barrier between New Spain, New France, và the Thirteen Colonies, it grew to lớn become a major artery of transportation và western expansion for the United States by the 19th century.
The Yellow River:
Huang He, which is also known as the Yellow River because of the màu sắc of its silt, is the third longest river in Asia and the sixth longest river in the world. Located in china and measuring 5,464 kilometers (3,395 miles) in length, the river originates the Bayan Har Mountains in Qinghai province, western China. It then flows through nine provinces before emptying into the Bohai Sea near the city of Dongying in Shandong province.
The Yellow River is also known as "the cradle of Chinese civilization" because of the pivotal role it played in the development of Chinese culture. Much lượt thích the Yangtze, the presence of human settlements dates back to lớn the Paleolithic Era, và the fertile flood basins contributed lớn the rise of agricultural communities which eventually integrated with the less-developed settlements along the southern Yangtze.
Before modern dams became an option, the Yellow River was extremely prone to flooding. In the roughly 2,540 years before 1946 CE, the Yellow River is believed khổng lồ have flooded 1,593 times và shifted its course many times (sometimes severely). These floods include some of the deadliest natural disasters ever recorded, thus earning the river the nicknames "China"s Sorrow" & "Scourge of the Sons of Han."
The Congo-Chambeshi:
At 4,700 km (2,920 miles), the Congo River (aka. Zaire River) in Africa is the ninth longest river in the world. Interestingly enough, it is also its deepest – with measured depths exceeding 220 m (720 ft) – và the second largest river in the world in terms of discharge (after the Amazon).
Originating deep in the eastern region of the Democratic Republic of Congo (DRC, formerly Zaire), the Congo is fed by the Lualaba river, which is itself fed by the Luyua và Luapula rivers that are connected to lớn Lake Mweru and Lake Bangwelo. The river then runs west & constitutes much of the border between the DRC và its eastern neighbor, the Republic of Congo.
The Congo river gets its name from the Kingdom of Kongo which was situated on the left banks of the river estuary. The kingdom is in turn named for its Bantu population, which were described in 17th century European records as Esikongo. The name Zaire is from a Portuguese adaptation of a Kikongo word nzere ("river"), a truncation of nzadi o nzere ("river swallowing rivers").
The river was known as Zaire during the 16th and 17th centuries, but the word Congo has since replaced Zaire gradually in English usage. However, references to Zahir or Zaire, as the name used by the natives (i.e. Derived from Portuguese usage), has remained common throughout this same period.
All the states that have existed in the region since attaining their independence from Belgium in 1960 – the DRC (which was named Zaire from 1971-1997) and the Republic of Congo – in turn derive their names from the river.
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