|Most recent IBA monitoring assessment|
|Year of assessment||Threat score (pressure)||Condition score (state)||Action score (response)|
|For more information about IBA monitoring please click here|
A former tidal estuary in the Rhine/Maas river system, sealed off from the sea in 1970 (see Haringvliet, 024) and no longer subject to marine influence. The site consists of a flood-plain, polders, marshland and swamp-forest, and is intersected by many formerly tidal creeks. The site is adjacent to Hollands Diep (025) in the west; it does not include three drinking-water reservoirs within its boundary. Human activities include reed-harvesting (`Other' land-use, below).
An important roost for geese Anser which come from surrounding feeding areas, but counts underestimate actual numbers. The mean total number of waterbirds in January exceeds 20,000.
BirdLife International (2021) Important Bird Areas factsheet: Biesbosch. Downloaded from http://www.birdlife.org on 23/01/2021.