Data Zone
Country/territory: Belgium
IBA criteria met: C6 (2000)
For more information about IBA criteria, please click here
Area: 7,010 hectares (70.10 km2)
Site description (2000 baseline)
The area is situated in the Demer river valley, west and east of the town of Diest. It comprises a rich variety of former river arms, peat ponds, marshes, reedbeds, sedge-fields, humid grasslands and alluvial forests, including heathland relicts on the sandy hills bordering the valley.
Key biodiversity
A breeding and staging area for meadow birds, waders and waterfowl.
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Demervallei (Belgium). Downloaded from
https://datazone.birdlife.org/site/factsheet/demervallei-iba-belgium on 23/12/2024.