Floods have
a great impact on their surrounding ecosystem, including the plants, animals, and people who
live there. Some people reap a benefit from flooding, while for others it can be catastrophic.
For example, Ancient Egyptian peoples relied on flooding of the Nile river to grow their crops.
In contrast, the flooding that resulting from an earthquake off the coast of Japan in 2011
destroyed miles of homes, schools, and public buildings.
In places where the
only major source of natural water is rivers, annual river flooding was often celebrated. The
Nile river floods yearly and deposits lots of nutrient-rich, damp soil as the water retreats.
These flooded areas were cultivated for growing crops like sugarcane, millet, and barley. Mud
from flooded areas could also be carried and deposited in areas where crops were beginning to
dry out. Animals, too, would...
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