Geography, asked by chandravilas0, 1 year ago

How is an ox-bow lake formed?


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Answers

Answered by ishaagrawal
5
(See the figure, I have tried explaining it)
Oxbow means U-shaped collar of an ox. 
The lake with the same shape is called oxbow lake.
When the river flows and reaches low-lying plains, it starts taking curved paths. It twists, turns or takes zigzag path making meanders. The meanders are curved and slowly the neck or the U shape starts touching each other and the whole piece of land with U shape formation cuts away. This forms oxbow lake.
Also, sometimes it is artificially formed. When a river is taking curved paths forming meanders, its distance or length increases coz of taking long path. To decrease the length of river or channelising it better for irrigation purpose, the curved part is separated (forming artificial oxbow lake) to make the river straight.
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Answered by Sudhalatwal
7
An ox-bow lake is named so because it resembles bow pin of and ox-bow which is crescent or U shaped. An ox-bow lake is formed when a wide meander is cut off from the main stream of a river  resulting in the formation of a free-standing water body.  

While a river flows through a valley it meander and erodes during its course. Since the erosion is more towards inside of the meander than the outside,  deposits are formed towards inside changing the course of the river. Gradually the inside of the meander will cut off from the main river which stands as an independent body of water while the river follows its straight path.
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