Question

What is the difference between flood plane and levees.

Answer 1

Answer:

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• ===>> A floodplain is an area of low-lying ground adjacent to a river, formed mainly of river sediments and subject to flooding. The floodplain includes natural levees, crevasse splays and backswamps. In most locations, these features are located within a valley carved by the river, and the lands outside of the valley and floodplain are the safest for building. However, ancient civilizations and modern development have preferentially located and built in floodplains for access to the rivers and waterways and other reasons. Rivers build their own natural levees through repeated flooding over time. They are a natural landform and the highest location on the floodplain comprised of the coarsest sediments. Artificial levees are built on top of natural levees to protect flood-prone areas and all the infrastructure, which should have been built on an upland. As we have seen with numerous current events, there are two types of artificial levees: those that have failed or have been over-topped and those that will.