print preview

Back Homepage


Federal Inventory of Floodplains of National Importance (FOEN)

Floodplains are near-natural riparian areas of watercourses and lakes that are shaped by water. The effect of water leads to a high diversity of habitats in a small area. Accordingly, floodplains are very rich in species. To protect and enhance the remaining floodplains, the federal government has enacted the Floodplain Ordinance including an inventory.

01.06.2022 | www.geo.admin.ch

1_IMG_9890
Foto: Kasper Ammann/naturaqua/BAFU

Link to the map: map.geo.admin.ch

Since 1850, about 90% of the floodplain areas have disappeared. This is due to river engineering and intensive land use. The riverine floodplains at lower elevations have suffered the most losses.

On the basis of the Nature and Cultural Heritage Protection Act, the Floodplain Ordinance and thus the Federal Inventory of Floodplains of National Importance came into force in 1992. This aims to protect and enhance the most valuable floodplains in Switzerland.

The floodplain inventory distinguishes between five types of floodplain: glacial forelands, alpine alluvial plains, watercourse floodplains, deltas and lakeshores. As of the 2017 revision, the inventory includes 326 objects. A new Annex 2 of the Floodplain Ordinance lists an additional 27 objects that have not been definitively cleaned up. These are protected as a precautionary measure.


Back Homepage

geo.admin.ch c/o
Federal Office of Topography swisstopo
COGIS (Coordination, Geo-Information and Services)
Seftigenstrasse 264
P.O. Box
3084 Wabern
Tel.
0041 58 469 03 15
Fax
0041 58 469 04 59

E-Mail

geo.admin.ch

c/o
Federal Office of Topography swisstopo
COGIS (Coordination, Geo-Information and Services)
Seftigenstrasse 264
P.O. Box
3084 Wabern