Flood barriers

flood defence in London

thumb|right|300px|Tokyo floodgates created to protect from [[typhoon surges]]

right|thumb|Acqua alta [[floods in Piazza San Marco, November, 2004. The increasing frequency of this type of event caused considerable damage and prompted projects such as MOSE.]]

complex of dams for flood control near Saint Petersburg, Russia

thumb|One of the three movable barrier sections of the Oosterscheldekering during a storm thumb|Topographical map of the Oosterscheldedam. Alternatingly it consists of five sections: three movable flood barriers and two artificial islands. The Oosterscheldekering ( English: Eastern Scheldt barrier), between the islands Schouwen-Duiveland and Noord-Beveland, is the largest of the Delta Works, a series of dams and storm surge barriers designed to protect the Netherlands from flooding from the North Sea. The construction of the Delta Works was a response to the widespread damage and loss of life

gabion primarily used for flood control and military fortifications

{| style="float: right" | thumb|none|300px|The Maeslant Barrier seen from the north |- | thumb|none|300px|Location of the Maeslant Barrier |- | thumb|none|300px|A ship passing the barrier |- | thumb|none|300px|Model (no longer present) |- | thumb|none|300px|The Maeslantkering closed |} The Maeslantkering ("Maeslant barrier" in Dutch) is a storm surge barrier on the Nieuwe Waterweg, in South Holland, Netherlands. It was constructed from 1991 to 1997. As part of the Delta Works, the barrier responds to water level predictions calculated by a centralized computer system called BOS. It automatical

coastal protection structure in the estuary of the river Eider

specific type of floodgate, designed to prevent a storm surge or spring tide from flooding the protected area behind the barrier

300px|thumb|right|A coupure where the A2 motorway (Netherlands)|A2 motorway crosses the Diefdijk ([[Hollandic Water Line) in the Netherlands.]] thumb|right|A coupure with a shed for storing the materials used to close the coupure in Het Hogeland

The Hartelkering (English: Hartel barrier) is a storm surge barrier in Spijkenisse, Netherlands. The barrier is part of the Europoortkering, itself part of the Delta Works project and is designed to close the Hartelkanaal (nl) in case of a storm surge.

type of radial arm floodgate

dam in Rhode Island, United States of America, United States of America

mostly vertical artificial barrier to temporarily contain the waters of a waterway which may flood

thumb|340px|Satellite picture of the Europoort (dating from before the creation of Maasvlakte 2). 1. Maeslantkering (on the Nieuwe Waterweg). 2. Hartelkering (on the Hartelkanaal). In red: strengthening of the dikes