Flooding

Question 1

What does high discharge mean?

Answer 1

The river level water increases

Question 2

What are some physical factors to flooding?

Answer 2

Prolonged Rainfall, Heavy Rainfall, Relief, Impermeable Rocks

Question 3

Prolonged Rainfall

Answer 3

Long periods of rainfall can make the soil become saturated. This means further rainfall cannot infiltrate and increases surface runoff. This increases discharge quickly which can cause a flood

Question 4

Heavy Rainfall

Answer 4

Means there more runoff resulting in heavy discharge

Question 5

Geology - Impermeable Rocks

Answer 5

It means water does not percolate into the rocks and flows on the surface through surface runoff meaning the risk of flooding is higher. NOT HIGH DISCHARGE

Question 6

Relief

Answer 6

Steeper slopes means the water reaches the river channel more quickly.

Question 7

Human Factors to flooding

Answer 7

Deforestation and Buildings/Construction

Question 8

Deforestation

Answer 8

Less trees means less interception. Water falls on leaves and then evaporates. It also means less water intake from plants. Deforestation means higher discharge and so flooding is likely.

Question 9

Buildings / Construction

Answer 9

Buildings make from impermeable materials such as concrete and roads results in higher surface runoff . Drains also take water quickly to rivers. This can result in a flood

Question 10

What is happening to flooding in more recent times?

Answer 10

They are increasing.