![]() ![]() Or, you can e-mail photos to us at and we may share them on this page or on social media. Please see the USGS social media sharing policy at. If you tag us with you are giving us permission to use your image. Attrition: river load particles striking, colliding against each other and breaking down in the process. Over time the meandering river also erodes laterally (side to side) and thus helps to widen and level the valley floor. On these plains, rivers often have wide meanders. Oxbow lakes usually form in flat, low-lying plains close to where the river empties into another body of water. The meander becomes an oxbow lake along the side of the river. A lake forms as the river finds a different, shorter, course. ![]() Corrosion: chemical action that leads to weathering. Diagram A) a cross section showing the speed or velocity of water through a meander: Diagram B) a labelled cross section to show the key features of the meander. An oxbow lake starts out as a curve, or meander, in a river. Hydration: the force of running water wearing down rocks. Here at USGS, we study how meanders are formed and can even model them to predict how the river may continue to change in the future, to better understand flooding hazards.Ĭan you find a meander in your area? If you don't see a river, see if you can spot a sidewalk or path that meanders, or watch how a drop of rainwater flows down a slightly sloped surface - does it make a straight or curvy path? Take a photo of a meander and tag us #findafeature or send it to us at be watching Instagram and Twitter for some great #findafeature examples and may share them here with the first name or initials of the contributor, and a general location. Fluvial Erosional Landforms are landforms created by the erosional activity of rivers. Due to erosion on the outside of a bend and deposition on the inside, the shape of a meander changes over time. This is why you often see sand bars and beaches on the inside of the curve. Rivers flowing over gently sloping ground begin to curve back and forth across the landscape. Why is this? Water is pushed to the outside of a bend, and erodes the curve further, while water on the inside is slower and deposits sediment. Once a meander starts, it often becomes more and more exaggerated. River System: Jhelum, Chenab, Ravi, Beas & Satluj Ganga-Brahmaputra River System. As a river makes its way through an area that is relatively flat, it often develops bends as it erodes its way through the path of least resistance. Meander, Oxbow Lake, Peneplain Drainage Patterns: Concordant, Discordant. A meander is when water flows in a curvy, bendy path, like a snake.
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