Floods and hurricanes have been affecting
the lives of people around the world for years. A flood is an
overflow of water on dry land. The two types of floods are coastal and
river floods.
A coastal flood is the flooding of beaches and
surrounding areas; together with bar spits and deltas. They can be affected
by tidal waves and coastal currents. Coastal floods can wrap a large amount
of distance along a coast. The length of time a coastal flood is
dangerous is usually very short. It depends on how high the tide is
which goes up and down twice a day. When the speeds of hurricane winds
become severe the height of the waves become three or more feet higher than the previous high tide.
Coastal floods can be caused by a number of
things. Coastal floods can be caused by runoff, hurricane waves, tsunami,
and hurricane rains. Coastal flooding can not only take part on oceans
but it can also take part on lakes. Coastal flooding can be a great
danger because coast lines are very compactly occupied areas. Although they get
smaller before reaching shore, wind generated waves have been covered to
be as high as 30 m in the middle of the ocean.
River flooding can be happen numeral of ways. The
causes are rain, snowmelt, and ice jams. Soil cannot absorb as much
water with continues moisten. The longer that precipitation lasts the more
water flows into streams as runoff. Cloudburst floods only last for a
couple hours, but they need a large amount of rainfall.
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