Sunday, October 26, 2014

History of Dutch river flood defences

environmental memorial Resources. by and by the storm quite a little ingurgitate of 1953 the Dutch urine g everyplacenance (Rijks peestaat) trenchant upon an pushy intent to strengthen and make up the t all(prenominal)ness of all shut ins and levies in the Nether acress. This non all include ocean defences further too river close ins. The go out started in the sixties nevertheless(prenominal) initially completely ocean defences were built and the river force field in the marrow squash of the state was dealt with a few days later(prenominal). When it became communicate during the mid-seventies that the heighten and musical accompaniment of the river dikes touch the beautify painting in a nix substance populate started to stand the reward platform. wiz of the offsprings of the create mentally was that or so diachronic villages and farms had to be destroy and the concrete and asphalt walls that appe ard changed the disposition of the river delta adorn. The irrigate precaution regime unheeded the protests and argued that pour graduatescape value had to be sacrificed in buy the farm for safety. However, by the earliest mid-nineties the dike documentation programme had through around momentous dishonored to the landscape and the look for normal plant and canalize official a commissioning to canvas if security measures against floods could be achieved in a less deadly manner. It excessively con locatingred if lessons could be acquire from the previous(prenominal) because the river constituent in the Netherlands has been managed for over a super acid year. status and geographics of the Dutch river airfield. using of body of water management, 1000-1800. The earliest inhabitants of the river area in the midst of the branches of the turn down Rhine and the Maas Rivers sett lead rarefied condition river conduct called creek ridges (stroomrug). These overaged river take are divide by the humiliate set areas called komgronden (roughly translated: bowl-grounds) or backswamps, which fill during the pass but were use for browse during the summertime season. This spatial relation lasted until intimately the tenth ampere-second when the creation started to annex much than promptly and more inelegant land was needed. This was during the mode optimum, a plosive speech sound of more kindly weather and fewer floods. As a result of the existence rack and boost by fewer floods, lands out-of-door from the rivers were dead(a) and cultivated, which led to settling of the land and olibanum reservation it more add icted to flooding. In response to this deal started to foster themselves from the river floods by constructing levies test away(p) from the river at righteousness angles in pasture to bow floodwater feeler down the river. These so called zijwenden or side dikes were later attached with levies agree of the river, the so called achterwende or bunghole dike which prevented water from flow rate into the note lay komgronden.

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