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Grevelingen Grevelingenmeer | |
---|---|
Coordinates | 51°42′51″N4°01′20″E / 51.71417°N 4.02222°E |
Basin countries | Netherlands |
Designated | 29 August 2000 |
Reference no. | 1272 [1] |
The Grevelingen or Grevelingenmeer (Lake Grevelingen) is a closed off part of the Rhine-Meuse estuary on the border of the Dutch provinces of South Holland and Zeeland.
It is situated between the islands of Goeree-Overflakkee (South Holland) and Schouwen-Duiveland (Zeeland) and was closed off as part of the Delta Works, a huge engineering project designed to protect the southwestern part of the Netherlands from flooding. The Brouwersdam, a dike connecting the two islands on the west, closes off the Grevelingen from the North Sea. The Grevelingendam, the dike on the east, blocks the inflow of the Rhine and Meuse water.
Since its closure in 1971, the saltwater of the Grevelingen slowly started to become brackish due to rainwater and excess polderwater from the islands, but the Dutch changed their mind and decided that they wanted to preserve the saline biotope. Therefore, in 1978 a sluice was created under the Brouwersdam, partially restoring and maintaining the saline character of the Grevelingen.
Nevertheless, the water body life remains affected by the changes in water salinity, in the transport of sediments, and by a deficit in oxygen in deep water, caused by the levee since 1971. Benthic life (mussels, oysters and many fixed organisms) is rich in the shallow waters in the photic zone, but the deep sediments are less conducive to marine life, and fishes in open water are rarely observed during diving.
The Brouwerssluis is open all year round except during storm floods. Brouwerssluis is the home of a seal colony subsisting on fish transported by the seawater stream entering the water body during high tide.
Connexxion bus service 104 crosses the Brouwersdam, bus service 133 (and others) the Grevelingendam.
The Grevelingenmeer is the largest saltwater water body in Europe and a popular place for holidays and water sports (sailing, surfing, diving).
Professional freestyle windsurfer Steven Van Broeckhoven refers to the Grevelingenmeer as his homespot.
The Delta Works is a series of construction projects in the southwest of the Netherlands to protect a large area of land around the Rhine–Meuse–Scheldt delta from the sea. Constructed between 1954 and 1997, the works consist of dams, sluices, locks, dykes, levees, and storm surge barriers located in the provinces of South Holland and Zeeland.
Schouwen-Duiveland is a municipality and an island in the southwestern Netherlands province of Zeeland. The municipality has 33,737 inhabitants and covers an area of 488.94 square kilometres.
Goeree-Overflakkee is the southernmost delta island of the province of South Holland, Netherlands. It is separated from Voorne-Putten and Hoeksche Waard by the Haringvliet, from the mainland of North Brabant by the Volkerak, and from Schouwen-Duiveland by Lake Grevelingen.
The Hollands Diep is a river in the Netherlands, and an estuary of the Rhine and Meuse rivers. Through the Scheldt-Rhine Canal it connects to the Scheldt river and Antwerp.
The Haringvliet is a large inlet of the North Sea, in the province of South Holland in the Netherlands. It is an important estuary of the Rhine-Meuse delta.
De Biesbosch National Park is one of the largest national parks in the Netherlands and one of the last extensive areas of freshwater tidal wetlands in Northwestern Europe. The Biesbosch consists of a large network of rivers and smaller and larger creeks with islands. The vegetation is mostly willow forests, although wet grasslands and fields of reed are common as well. The Biesbosch is an important wetland area for waterfowl and has a rich flora and fauna. It is especially important for migrating geese.
Ellemeet is a village in the Dutch province of Zeeland. It is a part of the municipality of Schouwen-Duiveland, and lies about 26 km west of Hellevoetsluis.
Flood control is an important issue for the Netherlands, as due to its low elevation, approximately two thirds of its area is vulnerable to flooding, while the country is densely populated. Natural sand dunes and constructed dikes, dams, and floodgates provide defense against storm surges from the sea. River dikes prevent flooding from water flowing into the country by the major rivers Rhine and Meuse, while a complicated system of drainage ditches, canals, and pumping stations keep the low-lying parts dry for habitation and agriculture. Water control boards are the independent local government bodies responsible for maintaining this system.
The Haringvlietdam, incorporating the Haringvliet sluices, are hydraulic engineering structures which closed off the estuary of the Haringvliet, Netherlands, as part of the Delta Works. The structure consists of 17 sluices, several kilometres of dam and a shipping lock, and formed the sixth project of the Delta Works.
Herkingen is a village in the Dutch province of South Holland. It is located on the south coast of the island Goeree-Overflakkee, in the municipality of Goeree-Overflakkee.
The Krammer is a body of fresh water located in the western part of Volkerak in the Netherlands.
The Volkerak is a body of water in the Netherlands. It is part of the Rhine–Meuse–Scheldt delta, and is situated between the island Goeree-Overflakkee to the north-west and the Dutch mainland to the south and east. The western part of the Volkerak is also called Krammer. Tributaries of the Volkerak are the Dintel and Steenbergse Vliet.
The Philipsdam is a compartmentalisation dam constructed as part of the Delta Works in the Netherlands. It separates water of the lakes Krammer and Volkerak from the Oosterschelde, and connects the Grevelingendam to Sint Philipsland.
The Brouwersdam is the seventh structure of the Delta Works in the Netherlands, forming a barrier across the former estuary known as the Brouwershavense Gat. As a result, the area of water became known as the Grevelingenmeer.
The Oesterdam is a compartmentalisation dam in The Netherlands, situated between Tholen and South Beveland in the eastern part of the Eastern Scheldt. The dam, with a length of 10.5 kilometres, is the longest structure built for the Delta Works. The Oesterdam was necessitated, like the Philipsdam, after the decision was taken to close off the Eastern Scheldt with a storm surge barrier, rather than a solid dam.
The Markiezaatskade is a compartmentalisation dam in The Netherlands, situated between South Beveland and Molenplaat, near Bergen op Zoom. The dam was constructed as part of the Delta Works, and has a length of 4 kilometres.
The Volkerakdam or Volkerakwerken is the name given to a group of hydraulic engineering structures between Goeree-Overflakkee and North Brabant in the Netherlands. The works are not a single dam, but are composed of three distinct structures: a dam between Goeree-Overflakkee and Hellegatsplein, a series of locks from Hellegatsplein to North Brabant, and a bridge from Hellegatsplein to Hoekse Waard. The works cross three separate bodies of water: the Haringvliet, Hollands Diep and Volkerak. The works together comprise the fifth project of the Delta Works.
The Grevelingendam is a dam located in the Grevelingen sea inlet between Schouwen-Duiveland and Goeree-Overflakkee in The Netherlands. The Grevelingendam was the fourth structure constructed as part of the Delta Works.
The Stormvloedkering Hollandse IJssel, Hollandse IJsselkering or Algerakering 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 Zandkreekdam is a compartmentalisation dam located approximately 3 kilometres north of the city of Goes in The Netherlands, which connects Zuid-Beveland with Noord-Beveland, and separates the Oosterschelde from the Veerse Meer.