Answer:
Severe flooding is caused by atmospheric conditions that lead to heavy rain or the rapid melting of snow and ice. Geography can also make an area more likely to flood. For example, areas near rivers and cities are often at risk for flash floods. A flood is an overflow of water onto land that is normally dry. River flooding can happen when there is debris in the river or dams that block the flow of the water. Speaking of dams, broken dams are another cause of flooding. Older infrastructure can fail when heavy rains come and water levels rise.
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