Site description (2000 baseline):

Site location and context
An area of shallow waters, wet meadows and (landward of the dyke) improved grassland along the Frisian west coast. It is a subsite of Lake IJsselmeer (034), and lies adjacent to the Makkumer- and Kooiwaard (035) in the north. This site, together with site 035, formed part of a single, larger site (former site NL016) in the previous pan-European IBA inventory (Grimmett and Jones 1989).

Key biodiversity
Non-breeding numbers are based on aerial counts which tend to underestimate species with a scattered occurrence. The site is an important roost for geese and waders, but actual roosting numbers are poorly reflected by counts. The average seasonal peak number of waterbirds during 1992-1996 exceeded 20,000.

Pressure/threats to key biodiversity
The main problems are water management (the water-level is deliberately kept high during summer), agricultural intensification, and commercial reed-harvesting (`Other' threat, above). The foreshore is legally protected under the Nature Conservation Act.

Protected areas
National Partial International Partial550 ha of IBA covered by Natural Monument (Friese IJsselmeerkust I, 4,800 ha). 2 ha of IBA covered by Natural Monument (Friese IJsselmeerkust II, 120 ha). 550 ha of IBA covered by Special Protection Area (Friese IJsselmeerkust, 5,130 ha).

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Workumerwaard. Downloaded from on 08/12/2023.