Flooding occurs in known floodplains when prolonged rainfall over several days, intense rainfall over a short period of time, or an ice or debris jam causes a river or stream to overflow and flood the surrounding area.
What are the main causes of the floods?
Causes of FloodsMassive Rainfall. Drainage systems and the effective infrastructure design aid during heavy rains. Overflowing of the Rivers. Collapsed Dams. Snowmelt. Deforestation. Climate change. Emission of Greenhouse Gases. Other Factors.
What is flood and its causes?
A flood is caused by a combination of heavy rainfall causing river / oceans to over flow their banks, and can happen at any time of the year, not just in the winter. Coastal areas are also at risk from sea flooding, when storms and big waves bring seawater onto the land.
How do humans cause flood?
Human activities that degrade the environment often increases flooding. These activities include: Deforestation. The lack of vegetation encourages water to flow over the surface rather than infiltrate into the soil thus increasing surface runoff.
What are effects of floods?
Floods have large social consequences for communities and individuals. As most people are well aware, the immediate impacts of flooding include loss of human life, damage to property, destruction of crops, loss of livestock, and deterioration of health conditions owing to waterborne diseases.
Is flood man-made?
First, not all floods are caused by nature. They are man-made too. And second, even countries like the USA and the UK get floods that cause huge losses to life and property.