Question

how shortening river’s width can still cause flooding if riverbanks are elevated?

Answer 1

Answer:

Explanation:

When the discharge becomes too high, the stream widens its channel by overtopping its banks and flooding the low-lying areas surrounding the stream. The areas that become flooded are called floodplains. Straight Channels - Straight stream channels are rare

what causes floods

Rivers and creeks flood when pulses of rainfall and/or snowmelt move downstream. This causes water to overtop the channel's banks and spill onto the neighboring floodplain. A natural river channel is shaped by the amount of water and sediment that travels through it.