Untersee of Lake Constance

Country/territory: Germany

IBA Criteria met: A4i, A4iii, B1i, B2, C2, C3, C4, C6 (2002)
For more information about IBA criteria please click here

Area: 6,053 ha

NABU Nature And Biodiversity Conservation Union

Site description
The Untersee is a large shallow lake situated on the course of the River Rhine, adjacent to Swiss IBA 014. Habitat-types include riverine forest, Alnus swamp-forest, dry grassland, wet meadows, lightly improved grassland, shallow water zones, reed- Phragmites and sedge-beds, mudflats and gravel-banks.

Key biodiversity
This is an important stop-over site for passage wildfowl. Species of global conservation concern that do not meet IBA criteria: Aythya nyroca (breeding).

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Untersee of Lake Constance. Downloaded from on 31/01/2023.