4.7 River Landscapes And Human Activity

Question 1

Explain how human factors ( urbanisation, land use, snd deforestation ) can affect flood hydrographs

Answer 1

Urbanisation- water cant infiltrate into impermeable surfaces so there is more runoff, gutters and drains quickly take runoff to rivers which rapidly increases discharge.
Deforestation- trees can take up water from the ground to store it which increases runoff and causes more water to enter the river channel which increases discharge

Question 2

Explain how physical and human factors cause river flooding in the eden

Answer 2

Urbanisation- water cant infiltrate into impermeable surfaces so there is more runoff. Gutters and drains quickly take runoff to rivers which rapidly increases discharge
Deforestation: trees take up water from the ground and store it. Which reduces runoff. Cutting down trees increases runoff and causes more water to enter the river channel which increases discharge

Question 3

What are the effects of flooding on people

Answer 3

Damage of property. People can be killed. Roads bridges and rail lines can be damaged. Floodwater can be contaminated. Business forced to shut down