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Flashcards in Oxbow Lake Deck (5)
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1

What is an oxbow lake

A curved lake formed from a horseshoe bend in a river where the main stream has cut across the narrow end

2

What processes cause an oxbow lake

Deposition- builds up on the inside of the bend.
Lateral erosion- on the banks on the outside of the bend.
They occur in the middle course as there is more energy and a high volume of water.

3

How is an oxbow lake formed

The gap between the two arms if the river are narrowed by erosion, the river breaks through the narrow gap during a time of high discharge, finally the current along the straighter path becomes dominant and the abandoned meander becomes an isolated oxbow lake.

4

Diagram of an oxbow lake

Look in folder

5

Example of an oxbow lake

Lake chicot (north america) formed 600 years ago from the meander in the Mississippi river. It is 21-22 miles long.