Lac de Grand-Lieu

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Lac de Grand-Lieu

  • Country: 
  • Site number: 
  • Area: 
    6,300 ha
  • Designation date: 
  • Coordinates: 
    47°05'N 01°39'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.


Lac de Grand-Lieu. 01/02/95; Pays de la Loire; 6,300 ha; 47°05'N 001°40'W. Nature Reserve. The site's area fluctuates depending on climatic conditions. A shallow lake, dominated by macrophytic vegetation and three large floating forests and exhibiting features of a tropical wetland. Shaped by tectonic movements some 120 million years ago, the lake was well preserved until the 1960s, when the hydrologic regime was radically altered by large-scale human intervention. Coupled with agricultural pollution and urban effluent, these disturbances caused severe nutrient-enrichment. Over 200 species of birds, including 110 nesting species, and internationally important numbers of numerous species of migrating waterbirds and wintering Anatidae use the area. The site supports 500 important plant species, including many that are threatened or protected at national or regional levels. Human activities include fishing, hunting, hay production and grazing. It is also important for its archaeological, historical and ethnographic values. Ramsar site no. 714. Most recent RIS information: 1994.

Administrative region: 
Pays de la Loire

  • National legal designation: 
    • natural reserve
    • nature reserve
  • Regional (international) legal designations: 
    • EU Natura 2000
  • Last publication date: 


Ramsar Information Sheet (RIS)

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