Flood is a natural disaster which happens in nature by chance. The flood can be caused in many ways.But in current times, it is mainly due to global warming.
The main cause of flood is heavy rainfall.The rain water which falls on the plains and mountain mostly flows into the side of the river. If the monsoon or rainfall is too heavy the water of the river goes beyond the river banks. Sometimes the rainwater is too heavy and continuous for days. This has been seen more frequently these days. Having to receive water more than it can hold, the river overflows from its banks. Another rare but occurring cause of flood is the melting of snow in the mountains extensively.
Flood generally comes in the rainy season when there is excessive rainwater. Flood is mainly caused by the sudden increase in water in the river. Therefore, most of the time it happens without prior knowledge and people can be not ready for it. Many times when flood happens people are asleep at home and cattle are locked in the barns, the flood can lock them inside the homes causing death. The scenes of floods are horrible. There is something called as high floods and low floods . High floods are dangerous as it can swept away houses, trees and people causing mas destruction. Every year in Nepal when flood happens mud houses are washed away, cattle drowned, crops ruined. The ultimate result of flood is famine and destruction.
Flood is always followed by many diseases like cholera. When there is flood government must be ready with emergency response. People trained for disaster and such floods must be sent for rescue in time. Food, cloth, medicines, and other necessities must be distributed to the victims. The relief at the time of natural disaster is of great value.
Though it is impossible to stop flood, we must be ready and lessen its effect. By planning the distribution of water in large areas. This can be done by making network of canals and dams.