Question:
What is a flood plain ? Explain the formation of a flood plain
Author: Hannah WolfendaleAnswer:
The flat land lying either side of a river which periodically floods
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Alternative answers:
A floodplain is the area directly adjacent to the river
bank (1) and occurs in the lower course of the river (1)
forms when the river discharge is high (1) and the river
bursts its banks (1) water may infiltrate the soil it
leaving behind a layer of material which builds up to
form the flood plain (1).
• Lateral erosion on the outside of meander bends (1)
wears away valley sides / slopes (1) so that the valley
floor becomes wider and flatter (1) and covered in
alluvium when the river is in flood (1).
• Erosion on the outside of the meander bend (1) results
in meander migration across a flood plain (1). When
river floods it deposits sedimen
Author
Hannah Wolfendale