4.7

Question 1

Explain how human factors (urbanisation, land-use change and deforestation) can affect flood hydrographs.

Answer 1

Urbanisation : increased surface run off meaning the discharge will be higher as there is more water is river.
Deforestation: less interception, more surface runoff, more water, more discharge

Question 2

Explain how physical factors (geology, soil, slope, basin type,
antecedent conditions) can affect flood hydrographs.

Answer 2

Saturated soil increases surface run off and that rises discharge.
More precipitation, higher peak rainfall and more discharge making the hydrograph flashy

Question 3

Explain how physical and human factors cause river flooding in the River Eden.

Answer 3

1. H Deforestation
2. P Steep relief - rain gets saturated quickly more impermeable rock
3. H Urbanisation
4. P saturated soil
5. P impermeable rock
6. H farming - cattle grazing

Question 4

What are the effects of flooding on people and environment? What problems were caused?

Answer 4

Economic loss on housing and jobs, social loss families have no home, environmentally habitats are destroyed, economically, farmland is lost, environmentally cattle and vegetation is destroyed