Klingnauer Stausee

Klingnauer Stausee

Klingnauer Stausee

  • Country: 
  • Site number: 
  • Area: 
    364 ha
  • Designation date: 
  • Coordinates: 
    47°35'N 08°13'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 located on the alluvial plain of the lower valley of the River Aare, down to the confluence of the Aare with the Rhine. It consists of a reservoir on the Aare, river stretches in a natural state, and periodically flooded fens and alluvial forests. It is protected by the federal inventories of alluvial zones, fenlands and amphibian spawning grounds as well as by a cantonal decree. Despite its location in a densely populated region of the Swiss central plateau, the Site provides a high diversity of habitats such as the open water of the reservoir, watercourses and pond systems, reed beds, marshes and meadows, hydrophilous tall herb fringe communities, willow (Salix) thickets, alluvial and ash (Fraxinus) woodlands. A large number of nationally rare and threatened species can be observed: 393 red-listed plants and 56 threatened bird species. Due to the constant silting of the reservoir, shallow water zones, mudflats and small islands develop which are important feeding grounds for birds, particularly for ducks. The Site is an important overwintering site for birds, and during migration periods it is one of the most important resting places for waders in Switzerland.

Administrative region: 
Canton of Aargau

  • National legal designation: 
    • Federal Inventory of Landscape and Natural Monuments of National Importance (1977, RS 451.11)
    • Federal inventory of Fenlands of National Importance (1994, RS 451.33)
    • Federal inventory of Fenlands of National Importance (1994, RS 451.33)
    • Cantonal decree on the protection of the Klingnau reservoir and its sourroundings (no. 761.560)
    • Federal reserve for Waterbirds and Migratory Birds of International and National Importance (1991, RS 922.32)
    • Federal inventory of Alluvial Zones of National Importance (1992, RS 451.31)
    • Federal inventory of Amphibian Spawning Areas of National Importance (2001, RS 451.34)
    • Cantonal forest reserve
    • Cantonal alluvial forest reserve
  • Last publication date: 


Ramsar Information Sheet (RIS)

Additional reports and documents