Книга: Oxbow Lake: Meander, Landform, Billabong, Deposition (Geology), Cut Bank, Secondary Flow, Point Bar, Erosion, River, Flood, Centripetal Force

High Quality Content by WIKIPEDIA articles! An oxbow lake is a U-shaped body of water formed when a wide meander from the mainstem of a river is cut off to create a lake. This landform is called an oxbow lake for the distinctive curved shape that results from this process. In Australia, an oxbow lake is called a billabong. By itself, the word oxbow can also mean a U-shaped bend in a river or stream, whether or not it is cut off from the main stream. When a river reaches a low-lying plain, often in its final course to the sea or a lake, it meanders widely. In the vicinity of a river bend, deposition occurs on the convex bank (the bank with the smaller radius). In contrast, both lateral erosion and undercutting occur on the cut bank or concave bank (the bank with the greater radius.)