• Country: 
  • Site number: 
  • Area: 
    9,039.7 ha
  • Designation date: 
  • Coordinates: 
    52°42'N 06°03'E
Materials presented on this website, particularly maps and territorial information, are as-is and as-available based on available data and do not imply the expression of any opinion whatsoever on the part of the Secretariat of the Ramsar Convention concerning the legal status of any country, territory, city or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries.


The Site (previously “De Wieden”) is characterized by shallow freshwater lakes, reed beds, fens, wet meadows, transition mires, quaking bogs, forested peatland and numerous canals created through peat extraction activities in the 18th and 19th centuries. The Ramsar Site boundary has been adjusted to that of the Natura 2000 site. Some wetlands have been included while some agricultural land, residential and recreational areas have been excluded. Together, Wieden and the adjoining Weerribben (Ramsar Site no. 193) form the largest peat swamp of its kind in Western Europe. The Site regularly supports more than 20,000 wintering waterbirds and is also a refuge for more than 1% of the biogeographic populations of three waterbird species. It also supports notable species of plants, fish and butterflies. There is a healthy otter population which was reintroduced in 2002. The lakes act as water storage reservoirs during the summer and provide water for irrigation. The main human activities relate to tourism, angling, boating, commercial fisheries, farming and reed harvesting. The main threats to the Site derive from drainage and nutrient pollution from intensive farming in the surrounding polders.

Administrative region: 
Province of Overijssel

  • National legal designation: 
    • National Park - De Weerribben-Wieden National Park (1992)
  • Regional (international) legal designations: 
    • EU Natura 2000
  • Last publication date: 


Ramsar Information Sheet (RIS)

Additional reports and documents