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Zandkreekdam
The is a dam in The Netherlands which connects Zuid-Beveland with Noord-Beveland, and separates the Oosterschelde from the Veerse Meer. A navigation lock in the dam permits shipping connections to Middelburg and Vlissingen, via the Veerse Meer and the Walcheren navigation channel. The Zandkreekdam is 830 metres in length, and was the second project to be constructed as part of the Delta Works, having been proposed by Johan van Veen as part of the (English: Three Islands Plan) which originated in 1930s. The construction of the Zandkreekdam, together with the Veerse Gatdam in 1961, created the freshwater Veerse Meer (Veerse Lake). Poor water quality in the lake led to the decision to build a control lock, known as the , which was completed in 2004 and re-established saltwater intrusion from the Oosterschelde into the Veerse Meer, and led to a significant improvement in water quality. There are two bridges at the Zandkreekdam locks to permit vehicular traffic to pass over it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veerse Meer
The Veerse Meer (Lake Veere) is a lagoon in the southwest Netherlands in the province of Zeeland. Description The Veerse Meer was created as a flood control measure to regulate water levels in the surrounding polders, acting as a drainage basin for the surrounding polders until its excess waters can be discharged into the Eastern Scheldt. Its level are lowered in the winter to help drain the polders and maintained at a higher level in the summer for recreation. History Originally an outlet of the Scheldt called the Veerse Gat, it was first closed off from the Sheldt by the Zandkreekdam in 1960, and from the North Sea in 1961 by Veerse Gatdam, some of the first constructions of the Delta Works water management system. In 2004, the Katse Heule sluice was constructed in the Zanderkreekdam to allow saltwater to flow in from the Eastern Scheldt to improve water quality and return this former river mouth to its original brackish state. Length and location It is 22 km long, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delta Works
The Delta Works ( nl, Deltawerken) 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. The aim of the dams, sluices, and storm surge barriers was to shorten the Dutch coastline, thus reducing the number of dikes that had to be raised. Along with the Zuiderzee Works, the Delta Works have been declared one of the Seven Wonders of the Modern World by the American Society of Civil Engineers. History The estuaries of the rivers Rhine, Meuse and Schelde have been subject to flooding over the centuries. After building the Afsluitdijk (19271932), the Dutch started studying the damming of the Rhine-Meuse Delta. Plans were developed to shorten the coastline and turn the delta into a group of freshwater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rijkswaterstaat
Rijkswaterstaat, founded in 1798 as the ''Bureau voor den Waterstaat'' and formerly translated to Directorate General for Public Works and Water Management, is a Directorate-General of the Ministry of Infrastructure and Water Management of the Netherlands. Its role is the practical execution of the public works and water management, including the construction and maintenance of waterways and roads, and flood protection and prevention. The agency was also involved in the construction of big railway projects such as the Betuweroute and the HSL-Zuid. The mission of the organisation is: "Rijkswaterstaat is de rijksdienst die werkt aan droge voeten, schoon en voldoende water én aan de vlotte en veilige doorstroming van het verkeer" (Rijkswaterstaat is the national agency that provides dry feet, clean and sufficient water and a quick and safe flow of traffic). The agency is divided in 10 regional, 6 specialist services and 2 special services. As of 15 May 2017, the director-general (DG ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saltwater Intrusion
Saltwater intrusion is the movement of saline water into freshwater aquifers, which can lead to groundwater quality degradation, including drinking water sources, and other consequences. Saltwater intrusion can naturally occur in coastal aquifers, owing to the hydraulic connection between groundwater and seawater. Because saline water has a higher mineral content than freshwater, it is denser and has a higher water pressure. As a result, saltwater can push inland beneath the freshwater. In other topologies, submarine groundwater discharge can push fresh water into saltwater. Certain human activities, especially groundwater pumping from coastal freshwater wells, have increased saltwater intrusion in many coastal areas. Water extraction drops the level of fresh groundwater, reducing its water pressure and allowing saltwater to flow further inland. Other contributors to saltwater intrusion include navigation channels or agricultural and drainage channels, which provide conduits for s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caisson (engineering)
In geotechnical engineering, a caisson ( or ; borrowed from French ''caisson'', from Italian ''cassone'', meaning ''large box'', an augmentative of ''cassa'') is a watertight retaining structure used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, or for the repair of ships. Caissons are constructed in such a way that the water can be pumped out, keeping the work environment dry. When piers are being built using an open caisson, and it is not practical to reach suitable soil, friction pilings may be driven to form a suitable sub-foundation. These piles are connected by a foundation pad upon which the column pier is erected. Caisson engineering has been used at least since the 18th century, and was notably used in the construction of the Brooklyn Bridge, which was completed in 1883. Types To install a caisson in place, it is brought down through soft mud until a suitable foundation material is encountered. While bedrock is pref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Storm Surges
A storm surge, storm flood, tidal surge, or storm tide is a coastal flood or tsunami-like phenomenon of rising water commonly associated with low-pressure weather systems, such as cyclones. It is measured as the rise in water level above the normal tidal level, and does not include waves. The main meteorological factor contributing to a storm surge is high-speed wind pushing water towards the coast over a long fetch. Other factors affecting storm surge severity include the shallowness and orientation of the water body in the storm path, the timing of tides, and the atmospheric pressure drop due to the storm. There is a suggestion that climate change may be increasing the hazard of storm surges. Some theorize that as extreme weather becomes more intense and sea level rises due to climate change, storm surge is expected to cause more risk to coastal populations. Communities and governments can adapt by building hard infrastructure, like surge barriers, soft infrastructure, li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tide
Tides are the rise and fall of sea levels caused by the combined effects of the gravity, gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another. Tide tables can be used for any given locale to find the predicted times and amplitude (or "tidal range"). The predictions are influenced by many factors including the alignment of the Sun and Moon, the #Phase and amplitude, phase and amplitude of the tide (pattern of tides in the deep ocean), the amphidromic systems of the oceans, and the shape of the coastline and near-shore bathymetry (see ''#Timing, Timing''). They are however only predictions, the actual time and height of the tide is affected by wind and atmospheric pressure. Many shorelines experience semi-diurnal tides—two nearly equal high and low tides each day. Other locations have a diurnal cycle, diurnal tide—one high and low tide each day. A "mixed tide"—two uneven magnitude ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sloedam
The Sloedam was a dam, connecting the Dutch islands Zuid-Beveland and Walcheren near the town of Arnemuiden. Before the dam was constructed, these islands were separated by a stretch of water called the Sloe. The Sloedam was constructed in 1871 for the railway connection between the towns of Flushing and Roosendaal, the so-called ''Zeeuwse Lijn'' (Zealandic Line). After World War II, the areas to the south of the dam were poldered. Since the Veerse Gat estuary was closed off by the Veerse Gatdam in 1961, the Sloedam no longer functions as a primary defense against the sea. World War II During World War II, two battles were fought on and around the Sloedam. Battle of Zeeland In May 1940, the area was contested during the German invasion of the Low Countries in the Battle of Zeeland. A combined French-Dutch force under brigadier-general Marcel Deslaurens attempted to stop the German invasion, but was unsuccessful. Battle of Walcheren Causeway In 1944-1945, heavy fighting cam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veerse Gat
The Veerse Gat or Veeregat was the sea channel between Walcheren and Noord-Beveland islands in Zeeland in the Netherlands. In 1961 as part of the Delta Plan it was blocked off by the Veerse Gatdam and made into an inland lake called Veerse Meer The Veerse Meer (Lake Veere) is a lagoon in the southwest Netherlands in the province of Zeeland. Description The Veerse Meer was created as a flood control measure to regulate water levels in the surrounding polders, acting as a drainage basin f .... References Bodies of water of the Netherlands Channels of Europe Delta Works History of Zeeland Goes Middelburg, Zeeland Noord-Beveland Veere {{Zeeland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Body Of Water
A body of water or waterbody (often spelled water body) is any significant accumulation of water on the surface of Earth or another planet. The term most often refers to oceans, seas, and lakes, but it includes smaller pools of water such as ponds, wetlands, or more rarely, puddles. A body of water does not have to be still or contained; rivers, streams, canals, and other geographical features where water moves from one place to another are also considered bodies of water. Most are naturally occurring geographical features, but some are artificial. There are types that can be either. For example, most reservoirs are created by engineering dams, but some natural lakes are used as reservoirs. Similarly, most harbors are naturally occurring bays, but some harbors have been created through construction. Bodies of water that are navigable are known as waterways. Some bodies of water collect and move water, such as rivers and streams, and others primarily hold water, such as lakes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Reclamation
Land reclamation, usually known as reclamation, and also known as land fill (not to be confused with a waste landfill), is the process of creating new land from oceans, seas, riverbeds or lake beds. The land reclaimed is known as reclamation ground or land fill. In some jurisdictions, including parts of the United States, the term "reclamation" can refer to returning disturbed lands to an improved state. In Alberta, Canada, for example, reclamation is defined by the provincial government as "The process of reconverting disturbed land to its former or other productive uses." In Oceania, it is frequently referred to as land rehabilitation. History One of the earliest large-scale projects was the Beemster Polder in the Netherlands, realized in 1612 adding of land. In Hong Kong the Praya Reclamation Scheme added of land in 1890 during the second phase of construction. It was one of the most ambitious projects ever taken during the Colonial Hong Kong era.Bard, Solomon. 002 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watersnoodmuseum
The Watersnoodmuseum or Flood Museum in Ouwerkerk, Netherlands is the "National Knowledge and Remembrance Centre for the Floods of 1953" and offers an in-depth picture of the events during and after the flood of 1 February 1953. The museum was officially opened on 2 April 2001. The museum also educates visitors about water safety, and the museum collects global knowledge about flooding. The museum is located on the dike south of the village of Ouwerkerk; it is housed in the four caissons used to close the last gap in the dike following the flood. History 1993–2002: Beginnings After the 40-year commemoration of the flood in 1993, a working group was formed under the leadership of Ria Geluk. In 1997, this group managed to get the museum project off the ground. A group of volunteers led by Evert Joosse, an architect from Kloetinge, started the Flood Museum in one of the caissons. In September and October 2000 a trial opening took place with the intention of letting the audience ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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