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Floods (Causes of floods (Failure of dam, Failure of levees, Failure of…
Floods
Causes of floods
Failure of dam
Failure of levees
Failure of floodwalls
Intense or prolonged rainfall
Snowmelt
Storm surge
Some cities are more prone to floods because of their proximity to water bodies
Concrete surfaces such as roads have a lower permeability thus causing surface runoff
Channel capacity
Height above sea level
Coastal Flood
Occurs in areas along the coast
Caused by intense storms
Caused by strong winds that create big waves known as storm surges
River Flood
Occurs when river water overflows its banks
Can be caused by snow melt, heavy rainfall, dam failure
Flash Flood
Takes place suddenly and last for less than a day
Water rises very fast
Impacts of floods
Social impact
Deaths
Spread of diseases
Homeless
No clean water
Economic impacts
Damage to machinery and equipment
Damage to transport infastructure
Disruption to electricity