Floods are caused by many things. One cause of a flood is when water exceeds the capacity of the area it is in; thus causing it to overflow outside the waters boundary. Another cause is the amount of rain that a certain area of land gets. When too much water has rained over a certain area, sewers start getting flooded, creating a backup and water starts to flow on streets. One more way of flooding is when dams break. Massive dams that hold water back prevent flooding. When the gate breaks, the water flows out of it and creates a flood.

Climates and environments have a lot to do with flooding also. A higher altitude might be exposed to more rain than a l...

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