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A stone near Crissolo, Italy, inscribed: Here is born the Po. The United States Geological Survey (USGS) states that a river's "length may be considered to be the distance from the mouth to the most distant headwater source (irrespective of stream name), or from the mouth to the headwaters of the stream commonly known as the source stream".
Meandering rivers, which form a sinuous path in a usually low-gradient plain toward the end of a fluvial system. Anastomosed river is a rare case of a relatively straight, complicated vertical sequence of river deposits with banks held together by dense vegetation .
Ria – Coastal inlet formed by the partial submergence of an unglaciated river valley; River delta – Silt deposition landform at the mouth of a river; Salt marsh – Coastal ecosystem between land and open saltwater that is regularly flooded; Sea cave – Cave formed by the wave action of the sea and located along present or former coastlines
Oxbow lake – U-shaped lake or pool left by an ancient river meander; Pendant bar – fluvial landform formed on the downstream side of a weathering-resistant protrusion; Plunge pool – Depression at the base of a waterfall; Point bar – Landform related to streams and rivers
When a river carves a plateau or a similar high-elevation area, a canyon can form, with cliffs on either side of the river. [ 8 ] [ 4 ] Areas of a river with softer rock weather faster than areas with harder rock, causing a difference in elevation between two points of a river.
Meanders are sinuous bends in rivers or other channels, which form as a fluid, most often water, flows around bends. As soon as the path is slightly curved, the size and curvature of each loop increases as helical flow drags material like sand and gravel across the river to the inside of the bend.
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The terms river morphology and its synonym stream morphology are used to describe the shapes of river channels and how they change in shape and direction over time. The morphology of a river channel is a function of a number of processes and environmental conditions, including the composition and erodibility of the bed and banks (e.g., sand, clay, bedrock); erosion comes from the power and ...
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