• Country: 
    Netherlands (Kingdom of the)
  • Site number: 
  • Area: 
    92,271 ha
  • Designation date: 
  • Coordinates: 
    51°44'N 03°39'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 is an extensive coastal wetland in the North Sea, characterized by shallow sandbanks, mudflats, salt meadows and dunes. In 2014 the Site was aligned with the Natura 2000 site, resulting in an increase in its area of 10,026 hectares. Its high food productivity, caused by the nutrient supply from the rivers Rhine and Meuse, attracts an outstanding range of species. The Site is important for the conservation of breeding, foraging and resting bird species, and more than 1% of the regional population of the northen pintail (Anas acuta) can be found. The shallow mudflats are very important spawning and nursery grounds for migratory fish. Moreover, common seal and grey seal regularly visit the Site. The main human uses include fishing, angling, boating, recreation and tourism. All these uses put pressure on the Site’s ecological character, as do other potential threats such as the disturbance of birds by aircraft, non-industrial pollution, construction work on dykes and dams, extraction activities and reclamation projects.

Administrative region: 
Zeeland and Zuid-Holland

  • National legal designation: 
    • National Ecological Network (NEN) - Voordelta
  • Regional (international) legal designations: 
    • EU Natura 2000
  • Last publication date: 


Ramsar Information Sheet (RIS)

Additional reports and documents