the flood that hit chennai recently is a good example.
just go through that news.
during floods, roads, bridges, farms, houses and automobiles are destroyed. > People become homeless.
The environment also suffers when floods happen. Chemicals and other hazardous substances end up in the water and eventually contaminate the water bodies that floods end up in.
 flooding brings a lot of diseases and infections including military fever, pneumonic plague, dermatopathia and dysentery.
 > Sometimes insects and snakes make their ways to the area and cause a lot of havoc.
Many people and animals have died in flash floods.
 > Many more are injured 
 Water supply and electricity are disrupted and people struggle and suffer as a result.