Flood - definition
An overflowing of a large amount of water
beyond its normal confines, esp. over what is normally dry land: "a flood
barrier"[1].
Floods most
commonly occur when there has been recent heavy rainfall and the natural
watercourses (damns, lakes etc) do not have the capacity to hold the excess
water. Floods, however, can also be caused by other weather phenomenons such as
in coastal areas where inundation can be caused by a storm surge associated
with a tropical cyclone, tsunami or a high tide coincides with higher than
normal river levels. Some other factors that can contribute to a flood are:
o Ground cover
o Tidal influences
o Catchment and weather conditions
before heavy rainfall
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