Marais d'Orx et zones humides associées

Spatules Blanches sur le Marais Barrage
Balbuzard pêcheur au Marais Central
Vue aérienne circuit de visite Marais Barrage
Marais Barrage en hiver
Cistude d'Europe, individu émergent

Marais d'Orx et zones humides associées

  • Country: 
  • Site number: 
  • Area: 
    956 ha
  • Designation date: 
  • Coordinates: 
    43°35'N 01°23'W
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 consist of a vast wetland area which mainly consists of marshes, mudflats, and wet meadows, surrounded by a network of dykes and canals. The marshes have been restored after being drained in the past for agricultural purposes. Today, it serves as an important dormitory, wintering, nesting, and migratory stopover site for many species of waterfowl. The Site is also important for numerous insects, amphibians, reptiles, fish, and mammals, including threatened species such as the European eel (Anguilla Anguilla) and the European mink (Mustela lutreola). The vulnerable southern water vole (Arvicola sapidus) and the aquatic warbler (Acrocephalus paludicola) also find habitat on the Site. More than 1% of bird species including European spoonbill (Platalea leucorodia), ringed plover (Charadrius hiaticula), northern shoveler (Anas clypeata) and northern pintail (Anas acuta) have been observed. The Site plays a major role in flood control, as it is the only flood expansion zone in the Boudigau hydrographic network. The Site welcomes up to 600 visitors per day during the peak season. A management plan is being prepared for the period up to 2031.

Administrative region: 
Région Nouvelle-Aquitaine

  • National legal designation: 
    • Loi Littoral
    • Réserve Naturelle Nationale - Marais d'Orx
  • Regional (international) legal designations: 
    • EU Natura 2000
  • Last publication date: 


Ramsar Information Sheet (RIS)

Additional reports and documents