Delta Coast This is an IBA in danger! 

Country/territory: Netherlands

IBA Criteria met: A1, A4iii, B1i, B2, B3, C1, C3, C4, C6 (2016)
For more information about IBA criteria please click here

Area: 83,534 ha

Vogelbescherming Nederland
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2018 very high not assessed medium
For more information about IBA monitoring please click here

Site description
An extensive area of coastal waters of the North Sea, extending from Rotterdam in the north up to the Westerschelde estuary (032) in the south. The site also adjoins the closed-off delta area of the Rhine/Maas river system, which includes seven other IBAs (021-024, 027-029), and is close to Vlaamse Banken in Belgium. Important habitats include shallowly submerged sandbanks and intertidal mud- and sandflats. This site, together with sites 022 and 023, formed part of a single, larger site (former site NL046) in the previous pan-European IBA inventory (Grimmett and Jones 1989).

Key biodiversity
In winter this area holds fluctuating numbers of Aythya marila (max. 5,550, 1992/93), Somateria mollissima (max. 9,968, 1992/93) and Melanitta nigra (max. 20,000, 1986/87). The mean total of waterbirds in February (1992/93-1994/95) exceeds 20,000.

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Delta Coast. Downloaded from on 28/11/2021.