Ketelmeer & Vossemeer

Year of compilation: 2000

Site description
A freshwater lake, bounded in the north by the dyke of Noordoostpolder (reclaimed in 1942), in the south by the dyke of Oostelijk Flevoland (1957), in the east by the delta of the IJssel river (047), and in the west by Lake IJsselmeer (034). Only the IJssel delta has some reedbeds along the foreshore. Sand extraction occurs, as well as extensive dredging to clean heavily polluted sediments.

Key biodiversity
The mean total number of wintering waterbirds in January exceeds 20,000.

Pressure/threats to key biodiversity
The main problems are water management (the water-level of the IJsselmeer is deliberately kept high during summer), nutrient pollution (from the River Rhine/IJssel and by trace pollutants such as cadmium, mercury and DDT), over-fishing, wildfowl hunting (mainly on the east side), recreation (leisure boating), and reed-harvesting along the eastern foreshore (`Other' threat, above). An island is under construction (as of 1998) for the storage of polluted sediments, but this will be beneficial to birds in the long-term.

Protected areas
National None International None

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Ketelmeer & Vossemeer. Downloaded from on 28/01/2022.