Why is living on a floodplain behind a levee safe from flooding?
a. ?Levees are rarely overtopped.
b. ?Water cannot seep under levees to flood the floodplain.
c. ?Levee banks are rarely eroded enough to fail.
d. ?Once a levee is built high enough to contain a 100-year flood, it will never flood.
e. ?Actually, 100-year flood levels often continue to get higher with time.
ANSWER: e
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