Floodplains

Question 1

How does channel straightening prevent flooding?

Answer 1

By removing meanders the velocity of the water will increase. This will stop a backlog of water and should reduce the risk of flooding.

Question 2

What is a flood relief channel

Answer 2

artificial channels that are created to divert water around or from important locations if a river is at risk of flooding

Question 3

how does Flood relief channels prevent flooding?

Answer 3

River discharge is reduced, meaning the risk of flooding is decreased

Question 4

Suggest one disadvantage of using channel straightening for settlements downstream

Answer 4

By changing the course of the river, you might remove flowing water from industries that depend on it

Question 5

How does floodplain zoning reduce the impact of flooding?

Answer 5

restricts the areas surrounding the river from being built so that houses and buildings don’t get flooded