River - Flooding

Flooding

Flooding is a natural part of a river's cycle. The majority of the erosion of river channels and the erosion and deposition on the associated floodplains occur during flood stage. In many developed areas, human activity has changed river channel form, altering different magnitudes and frequencies of flooding. Some examples of this are the building of levees, the straightening of channels, and the draining of natural wetlands. In many cases human activities in rivers and floodplains have dramatically increased the risk of flooding. Straightening rivers allows water to flow more rapidly downstream increasing the risk of flooding places further downstream. Building on flood plains removes flood storage which again exacerbates downstream flooding. The building of levees may only protect the area behind the levees and not those further downstream. Levees and flood-banks can also increase flooding upstream because of the back-water pressure as the upstream flow is impeded by the narrow channel banks.

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Other articles related to "flooding":

Mangala Area - Reservoir Properties
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Carrigrohane Straight - Flooding
... very flat and subject to both tidal and river flooding ... and Iniscarra Dams has enabled some control to be put on the flooding so it is now not as severe ...
Marble-Cone Fire
... This posed the threat of serious flooding in the Big Sur River Valley, where a much smaller August 1972 fire had led to disastrous flooding later that year ... Fortunately, moderate rains resulted in no major flooding problems ...
Shockoe Bottom - Redevelopment
... After centuries of periodic flooding by the James River, development was greatly stimulated by the completion of Richmond's James River Flood Wall in 1995 ... Ironically, the next flooding disaster came not from the river, but from Hurricane Gaston which brought extensive local tributary flooding along the basin of Shockoe Creek and did ...
Carbon Dioxide Flooding
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