What are the causes and effects of flood ?

Question

i want details on flood.

pls give me some websites where u can get these matters.

Answer 1

Direct quote from my source:

"A flood is caused by a combination of heavy rainfall

causing river / oceans to over flow their banks, and can

happen at any time of the year, not just in the winter."

"Floodwater can seriously disrupt public and personal

transport by cutting off roads and railway lines, as well

as communication links when telephone lines are

damaged.

"Floods disrupt normal drainage systems in cities, and

sewage spills are common, which represents a

serious health hazard, along with standing water and

wet materials in the home. Bacteria, mould and

viruses, cause disease, trigger allergic reactions, and

continue to damage materials long after a flood.

"Floods can distribute large amounts of water and suspended sediment over vast areas,

restocking valuable soil nutrients to agricultural lands. In contrast, soil can be eroded by

large amounts of fast flowing water, ruining crops, destroying agricultural land / buildings

and drowning farm animals."

Answer 2

Causes.

1. Heavy rain  where no proper rain water drainage system.

2.melting of ice fields in poles due to global warming.

3.may be due to construction of barriers like Dams, without proper estimation on maximum possible flood area.

4. can happen due to earth quake which may cause tsunamis.

effects.

major disasters.

loss of land

loss of source of food.

spreading of deceases

damages to properties.

obstruct communication systems like roads rails etc.

massive migration may occur, leading to poverty.

and so on..