Building artificial levees has been said to be self-perpetuating. Why does building a levee in one place
along a river system prompt the construction of another downstream? What will be an ideal response?
Where new levees are built, usually on top of natural ones, floodwater is prevented from entering the
adjacent floodplain. This water is then forced to flow downstream to other areas. Natural levees in
those areas will then experience higher than normal water levels and may be overtopped. The typical
solution to this flooding problem is construction of an artificial levee. During the next high water
period, the story is repeated, thus perpetuating levee construction in the downstream direction.
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Why do you think the water used for power generation comes mainly
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