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Rivers get their alluvium from erosion, which carves rock into canyons and valleys. Rivers have sustained human and animal life for millennia, including the first human civilizations. The organisms that live around or in a river such as fish, aquatic plants, and insects have different roles, including processing organic matter and predation.
Gleason’s conclusion: “Holy cow, the rivers of the world are a lot different than we thought.” Some are changing by 5% or 10% a year, the report found. “That’s rapid, rapid change,” he ...
The flow is then directed against the opposite bank of the river, which will erode into a more concave shape to accommodate the flow. The bank will still block the flow, causing it to reflect in the other direction. Thus, a bend in the river is created. [7] Rivers may run through low, flat regions on their way to the sea. [12]
Pak Nam Pho, the downtown of Nakhon Sawan in Thailand, is the confluence of the rivers Ping and Nan, forming the Chao Phraya the main artery of central Thailand. Pak Phraek, the old town zone of Kanchanaburi in Thailand, is the confluence of the rivers Khwae Yai and Khwae Noi, forming the Mae Klong the main artery of western Thailand.
The Roman author Arrian's Indica states that "the delta of the land of the Indians is made by the Indus river no less than is the case with that of Egypt". [8] As a generic term for the landform at the mouth of the river, the word delta is first attested in the English-speaking world in the late 18th century, in the work of Edward Gibbon. [9]
The Finke River, or Larapinta in the Indigenous Arrernte language, is a river in central Australia, whose bed courses through the Northern Territory and the state of South Australia. It is one of the four main rivers of Lake Eyre Basin and is thought to be the oldest riverbed in the world. It flows for only a few days a year.
A riverscape [1] (also called river landscape) [2] comprises the features of the landscape which can be found on and along a river. Most features of riverscapes include natural landforms (such as meanders and oxbow lakes) but they can also include artificial landforms (such as man-made levees and river groynes). Riverscapes can be divided into ...
A subterranean river (also known as an underground river) is a river or watercourse that runs wholly or partly beneath the ground, one where the riverbed does not represent the surface of the Earth. It is distinct from an aquifer , which may flow like a river but is contained within a permeable layer of rock or other unconsolidated materials.