Jumat, 21 September 2012

Explanation How Flood Occur

Flood is an overflow of water that because of heavy rain. Another cause is due to sea tide. But we hear most often floods often occur due to overflow of river. Flood occurred in the river when water flow exceeds the capacity of river channels. Flood is also a seasonal problem that occurs in big cities with less or no drainage system. Heavy rainfalls are one of the major causes of floods. The level of water in rivers or lakes rises due to heavy rainfalls. When the level of water rises above the rive banks or dams, the water starts overflowing, which causes floods. water overflows to the areas adjoining to the rivers, lakes or dams, causing floods. The flood water causes havoc and great destruction in the areas where it flows. Floods occur more in the regions that get heavy rainfalls. There are also several human causes of floods. Deforestation is one of the major causes of floods. Trees are being cleared fast from large areas. As result, soil is easily eroded, and the eroded soil gets settled at the bottom of rivers and seas, which raises the level of water in rivers and seas, which consequently causes floods. However, human causes of floods can be avoided. Humans should let the nature go its own way.

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