Flooding Flashcards
Precipitation
Heavy rainfall caused saturated soils and causing run off
Flash flood
Hot dry areas that experience intense rainfall. Rain cannot infiltrate
How Urbanisation increases flooding risk
Where vegetation is removed from land and replaced with tarmac
Hard Engineering
The attempt at controlling natural processes using man-made structures
Dams and reservoirs advantages
Energy can be created through hydroelectric power
Dams and reservoirs disadvantages
Expensive
Land lost
Visually intrusive
Channelisation
River widened or deepened to allow for more water to be carried
Channelisation advantages
Long lasting
Protects immediate areas as the water moves away quickly
Channelisation disadvantages
Expensive
Visually intrusive
Soft engineering
Attempt at controlling natural processes using natural structures
Flood plain zoning
Authorities stop people from building in a flood damage area
Flood plain zoning ADVANTAGES
Very cheap
Sustainable
Flood plain zoning disadvantages
Enforcing can be different especially in low income areas
Washlands
Rivers are allowed to flood naturally into wasteland areas to prevent higher value land from flooding
Washland advantage
Cost efficient
Provides habitat sights for birds and plants
