The Holland Marsh is a wetland and agricultural area in Ontario, Canada, about 50 kilometres (31 mi) north of Toronto. It lies entirely within the valley of the Holland River, stretching from the northern edge of the Oak Ridges Moraine near Schomberg to the river mouth at Cook's Bay, Lake Simcoe. In its entirety it comprises about 21,000 acres, with two distinct divisions. Historically it has simply been referred to as "the marsh".
Harvesting carrots at a farm on the Holland Marsh.
Holland Marsh Memorial plaque at the former city hall in Nieuwe Pekela, the Netherlands
A rainbow over a non-agricultural field on the Holland Marsh.
A polder is a low-lying tract of land that forms an artificial hydrological entity, enclosed by embankments known as dikes. The three types of polder are:Land reclaimed from a body of water, such as a lake or the seabed
Flood plains separated from the sea or river by a dike
Marshes separated from the surrounding water by a dike and subsequently drained; these are also known as koogs, especially in Germany
Aerial view of Flevopolder, the Netherlands
Satellite image of Noordoostpolder, the Netherlands (595.41 km2)
Pumping station in Zoetermeer, Netherlands: The polder lies lower than the surrounding water on the other side of the dike. The Archimedes' screws are clearly visible.
The Yser river and West Flemish polders near Diksmuide
