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Posts tagged Flevoland

Island Province of Flevoland, the Netherlands – February 20th, 2011

52.5N 5.5E

February 20th, 2011 Category: Image of the day, Lakes

Netherlands - February 1st, 2011

This orthorectified image focuses on the Dutch province of Flevoland. It is located in the centre of the country, at the location of the former Zuiderzee, and consists of two large islands.

Two bodies of water can be observed in the upper part of the image. To the left is the Markermeer, a 700 km2 (270 sq mi) lake. It is separated from the other body of water, the 1100 km² IJsselmeer, by a dike called the Houtribdijk, visible as a faint grey line.

Dutch Coastal Bodies of Water: Markermeer, IJsselmeer and Wadden Sea – May 31st, 2010

May 31st, 2010 Category: Image of the day, Lakes

Netherlands - April 18th, 2010

Netherlands - April 18th, 2010

Several bodies of water are visible near the coast of the Netherlands: the Markermeer (bright green), the IJsselmeer (dark blue) and the Wadden Sea (green, closest to the open ocean).

The Markermeer is a 700 km² lake in the central Netherlands in between North Holland, Flevoland and its larger sibling, the IJsselmeer. A shallow lake at some 3 to 5 m in depth, it is named after the small former island, now peninsula, of Marken that lies within it.

IJsselmeer (sometimes translated as Lake IJssel, alternative international spelling: Lake Yssel) is a shallow lake of 1100 km² in the central Netherlands bordering the provinces of Flevoland, North Holland and Friesland, with an average depth of 5 to 6 m. It is named after the IJssel river that drains into it via a smaller lake, the Ketelmeer. The IJsselmeer is the largest lake in Western Europe.

The Wadden Sea (Dutch: Waddenzee) is an intertidal zone in the southeastern part of the North Sea. It lies between the coast of northwestern continental Europe and the range of Frisian Islands, forming a shallow body of water with tidal flats and wetlands.

River IJssel Flowing into the Ketelmeer, the Netherlands

52.5N 5.7E

February 5th, 2010 Category: Lakes, Rivers

Netherlands - January 3rd, 2010

Netherlands - January 3rd, 2010

The River IJssel, sometimes called Gelderse IJssel to avoid confusion with its Hollandse IJssel namesake in the west of the Netherlands, is a branch of the Rhine in the Dutch provinces of Gelderland and Overijssel. Here, it flows more or less vertically across the image, just left of the middle.

River IJssel flows from Westervoort, east of the city of Arnhem, until it discharges into the IJsselmeer. River IJssel is one of the three major distributary branches into which the Rhine divides itself shortly after crossing the German-Dutch border. As a lowlands river, the IJssel has a lot of bends and naturally occurring dead branches.

Here, it can be seen flowing into the Ketelmeer, a lake between the polders Noordoostpolder and Oostelijk Flevoland, which connects the river IJssel to the lake IJsselmeer. The Ketelmeer has a size of 3500 hectare, most of which is in the province Flevoland, but the river delta of the IJssel is in the province Overijssel.

Green Waters of the Markermeer, the Netherlands – June 11th, 2009

52.5N 5.2E

June 11th, 2009 Category: Image of the day, Lakes

Netherlands - May 30th, 2009

Netherlands - May 30th, 2009

Sediments and algae color bodies of water near the Dutch coast various shades of brown and green. Particularly striking is the bright yellow-green Markermeer (bottom center), a 700 km² lake in the central Netherlands between North Holland, Flevoland and its larger sibling, the IJsselmeer.

A shallow lake at some 3 to 5 m in depth, it is named after the small former island, now peninsula, of Marken that lies within it. The southwest side of the lake is known as the IJmeer.

The Markermeer used to be part of the Zuiderzee, a saltwater inlet of the North Sea. This inlet was dammed off by the 32 km long Afsluitdijk (Closure Dike) in 1932, turning the Zuiderzee into the freshwater IJsselmeer.

The following years saw the reclamation of extensive tracts of land as large polders in a massive project known as the Zuiderzee Works. Part of the construction of the last polder was building the Houtribdijk, also called Markerwaarddijk, finished in 1976, which hydrologically splits the IJsselmeer in two, the southern section being the Markermeer.

The Markermeer was not originally intended to remain a lake; one of these polders, the Markerwaard, was to occupy the area of the current Markermeer. However, because of changing priorities and doubts about the financial feasibility, the Markerwaard was indefinitely postponed in the 1980s and the Markermeer has since begun to become a valuable ecological and recreational asset of its own.

The Markermeer is used as a freshwater reservoir and a buffer against floodwaters and droughts. In 2003 the Netherlands was hit by drought, and several minor dikes were endangered. Water from the Markermeer was used to keep the area surrounding Amsterdam wet, thereby keeping the dikes safe.