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This picture of the Nowitna River in Alaska shows two oxbow lakes – a short one at the bottom of the picture and a longer, more curved one at the middle-right. The picture also shows that a third oxbow lake is probably in the making: the isthmus or bank in the centre of the most prominent meander is very narrow – much narrower than the width of the river; eventually, the two sections of ...
Animation of the formation of an oxbow lake. A meander cutoff is a natural form of a cutting or cut in a river occurs when a pronounced meander (hook) in a river is breached by a flow that connects the two closest parts of the hook to form a new channel, a full loop.
The oxbow lake, which is the most common type of fluvial lake, is a crescent-shaped lake that derives its name from its distinctive curved shape. [37] Oxbow lakes are also known as cutoff lakes. [1] Such lakes form regularly in undisturbed floodplains as a result of the normal process of fluvial meandering.
An oxbow lake is formed when a river creates a meander due to the river eroding the banks through hydraulic action and abrasion/corrasion. After a long period of time this meander becomes very curved, and eventually the neck of the meander will touch the opposite side and the river will cut through the neck, cutting off the meander to form the ...
It is usually an oxbow lake caused by a change in course of a river or creek, but other types of small lakes, ponds or waterholes are also called billabongs. The term is likely borrowed from Wiradjuri, an Aboriginal Australian language of New South Wales.
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Due to the circular path of a stream around a bend the surface of the water is slightly higher near the concave bank (the bank with the larger radius) than near the convex bank. This slight slope on the water surface of the stream causes a slightly greater water pressure on the floor of the stream near the concave bank than near the convex bank.
Aerial photo map of False River. False River (French: Lac False River) is an oxbow lake located in southeastern Pointe Coupee Parish, Louisiana centered at This lake was once the main channel of the Mississippi River in this area, but was cut off in about 1722 when seasonal flooding cut a shorter channel to the east.