What is Flood?
A '''flood''' is an overflow of water. Floods are very hard to deal with. ==Overview== Floods are most commonly made due to an overflowing [[river]], a [[dam]] break, [[snowmelt]], or heavy rainfall. Less commonly happening are [[tsunami]]s, [[storm surge]]. The most deadly flooding was in 1931 in China and killed between 2,000,000 and 4,000,000 people.<ref>O'Connor, Jim E. and John E. Costa. 2004. The world's largest floods, past and present: their causes and magnitudes [Circular 1254]. Washington, D.C.: U.S. Department of the Interior, U.S. Geological Survey.</ref> The [[Kerala flood]] in India was another flood that has destroyed people's houses. During a flood, people try to move themselves and their most precious belongings to higher ground quickly. The process of leaving homes in search of a safe place is called a [[Evacuation|flood evacuation]]. Floods have inspired [[myth]]s and [[legend]]s, especially the story of the [[great flood]].{{citation needed|date=November 2024}} ==Pollution of drinking water== [[File:Alicante(30-09-1997).JPG|thumb|right|Autumn [[Mediterranean sea|Mediterranean]] flooding in [[Alicante]], [[Spain]], September 1997]]During a flood there is plenty of water logging and overflow of water; it is mostly [[Water pollution|polluted]] and not safe to [[drink]]. If people drink this dirty water, they may suffer from [[disease]]s such as [[typhoid]] and [[cholera]], [[hepatitis]] and other such diseases. People can get ready to survive a flood by filling many [[container]]s with fresh and clean [[drinking water]] and storing other [[emergency]] supplies like medicine and food. During a flood, people try to go to higher sides because the flood water cannot reach high areas. Also drains overflow and mix with clean water and people who drink it might fall ill.{{citation needed|date=November 2024}} ==Causes== Flooding is usually caused when a [[volume]] of water within a water body, such as a [[lake]], overflows outside it. Sometimes if a [[dam]] breaks, it suddenly releases a large amount of