Levee (lower coarse ,deposition) Flashcards
1
Q
give an example
A
River Moy, Co. Mayo
2
Q
give a description
A
A natural ridge of material deposited along the banks of a river in its old stage
3
Q
how are they formed
A
formed over many years due to repeated flooding
4
Q
how does a natural flood barrier
A
Larger, heavier materials are deposited
close to the riverbank, forming a natural
flood barrier.
5
Q
how do floodplains height increase
A
As the river floods, the height of the levees
increases until they are raised above the
height of the floodplain.
6
Q
how does a backswamp occur
A
The floodwater is unable drain back and
marshland develops on the floodplain
(known as a backswamp)
