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Flood control channels are large and empty basins where surface water can flow through but is not retained (except during flooding), or dry channels that run below the street levels of some larger cities, so that if a flash flood occurs the excess water can drain out along these channels into a river or other bodies of water. Flood channels are ...
The map to the right shows a flood map for the City of York, including the floodplain for a 1 in 100-year flood (dark blue), the predicted floodplain for a 1 in 1000 year flood (light blue) and low-lying areas in need of flood defence (purple). The most sustainable way of reducing risk is to prevent further development in flood-prone areas and ...
Floodplains of the United States, areas of land adjacent to a stream or river which stretch from the banks of its channel to the base of the enclosing valley walls, and which experience flooding during periods of high discharge.
However, the main channel was constructed between 1791 and 1795, and despite some defects, brought some relief from flooding to the area. The drain was upgraded during the Second World War, to provide a backup water supply for an armaments factory at Puriton, and again in 1972, when the Sowy River flood relief channel was built. The drain has ...
The Flood Control Act of 1928 (FCA 1928) (70th United States Congress, Sess. 1.Ch. 569, enacted May 15, 1928) authorized the United States Army Corps of Engineers to design and construct projects for the control of floods on the Mississippi River and its tributaries as well as the Sacramento River in California. [1]
A flood insurance rate map (FIRM) is an official map of a community within the United States that displays the floodplains, more explicitly special hazard areas and risk premium zones, as delineated by the Federal Emergency Management Agency (FEMA). [1]
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Flood Control Act of 1928, passed in the wake of the Great Mississippi Flood of 1927. FCA 1928 had three important effects. It increased public awareness of advances in flood control theory and practice. It put flood control on par with other major projects of its time with the largest public works appropriation ever authorized.
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