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Hollandse IJssel

Europe river stubsNetherlands geography stubsRivers of South HollandRivers of Utrecht (province)Rivers of the Netherlands
Rivers of the Rhine–Meuse–Scheldt deltaSouth Holland geography stubsUtrecht (province) geography stubs
HollandseIJssel.Doorslag
HollandseIJssel.Doorslag

The Hollandse (or Hollandsche) IJssel (pronounced [ˌɦɔlɑntsə ˈʔɛisəl]; "Holland IJssel", as opposed to the 'regular' or Gelderland IJssel) is a branch of the Rhine delta that flows westward from Nieuwegein on river Lek through IJsselstein, Gouda and Capelle aan den IJssel to Krimpen aan den IJssel, where it ends in the Nieuwe Maas. Another branch called Enge IJssel ("Narrow IJssel") flows southwest from Nieuwegein. The name IJssel is thought to derive from the Germanic i sala, meaning "dark water". Originally, the Hollandse IJssel forked off from river Lek at Nieuwegein, but the connection was cut off with the Hollandse IJssel nowadays only draining the surrounding pastures. If the North Sea floods, the Hollandse IJssel allows water through the Rotterdam Waterway to flood low-lying land east of Rotterdam. The Delta Works included a steel barrier that can be lowered within minutes to block the waterway. The sea protection constructions were built at the mouth of the Hollandse IJssel in 1957.

Excerpt from the Wikipedia article Hollandse IJssel (License: CC BY-SA 3.0, Authors, Images).

Hollandse IJssel
IJsseldijk,

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Wikipedia: Hollandse IJsselContinue reading on Wikipedia

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Latitude Longitude
N 51.908055555556 ° E 4.5611111111111 °
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IJsseldijk

IJsseldijk
2901 AM
South Holland, Netherlands
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HollandseIJssel.Doorslag
HollandseIJssel.Doorslag
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Stormvloedkering Hollandse IJssel
Stormvloedkering Hollandse IJssel

The Stormvloedkering Hollandse IJssel (English: Hollandse IJssel Storm Surge Barrier), Hollandse IJsselkering (Hollandse IJssel Barrier) or Algerakering (Algera Barrier) is a storm surge barrier located on the Hollandse IJssel, at the municipal boundary of Capelle aan den IJssel and Krimpen aan den IJssel, east of Rotterdam in The Netherlands. The construction of the works comprised the first project of the Delta Works, undertaken in response to the disastrous effects of the North Sea flood of 1953. Prior to 1954, the spelling Hollandsche was used in the official name. The Hollandse IJssel is a low-lying river, and during the 1953 flood, the river dikes were exposed to dangerously high water levels, placing around 1.5 million people in the Randstad at risk from flooding. A dike at Ouderkerk aan den IJssel failed, and a dike in Nieuwerkerk aan den IJssel was almost breached, being sealed only after the local mayor ordered sailor Arie Evegroen to navigate his barge Twee Gebroeders into the hole which had been formed in it. The body in charge of the Delta Works, the Deltacommissie, therefore prioritised the construction of a storm surge barrier, and in January 1954, less than a year after the flood, dredging works were undertaken to start the project.On May 6, 1958, the first sluice gate was lowered as a test, with the storm surge barrier made operational on 22 October 1958. The barrier is often referred to colloquially as the Algerakering, but has never been officially known by that name. The name arises as the adjacent bridge carrying the N210 road is officially named the Algerabrug (Algera Bridge), after Jacob Algera, who resigned as Minister of Transport and Water Management for health reasons on 10 October 1958, only twelve days before the opening of the project. The architect was J.A.G. van der Steur Jr., and the project was designed by the Deltadienst department of Rijkswaterstaat, with H.G. Kroon as construction engineer.The barrier is classified as a Rijksmonument. The four towers of the barrier are lit to act as aids to navigation, with blue lighting indicating an open barrier and red lighting indicating that the barrier is closed.