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Location United Kingdom, South East
Central coordinates 1o 11.02' East  51o 18.62' North
IBA criteria C6
Area 479 ha
Altitude 2 - 15m
Year of IBA assessment 2007

Royal Society for the Protection of Birds

Site description The IBA covers about 6 km of the Stour flood-plain downstream of Canterbury. The site includes flooded gravel-pits, reedbeds (Phragmites) and lagoons, in an area that has undergone colliery subsidence. Margins are well-vegetated with scrub and Alnus carr, which supports a diverse ground flora. Fen communities exist in areas of cut reedbed, with a rich aquatic flora present in some of the dykes. The site supports a wide range of wetland birds including notable populations of breeding and wintering reedbed species.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Eurasian Bittern Botaurus stellaris winter  1995-1996  5 individuals  good  C6  Least Concern 
Circus cyaneus winter  1987  9 individuals  good  C6  Not Recognised 

IBA Monitoring

2007 medium not assessed medium
Good - based on reliable and complete / representative data

Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications dams & water management/use - small dams likely in short term (within 4 years) small area/few individuals (<10%) slow but significant deterioration low
Natural system modifications other ecosystem modifications happening now some of area/population (10-49%) slow but significant deterioration medium

Whole area of site (>90%) covered by appropriate conservation designation  A management plan exists but it is out of date or not comprehensive  Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity  medium 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Stodmarsh National Nature Reserve 249 protected area overlaps with site 163  
Stodmarsh Site of Special Scientific Interest 623 protected area contains site 479  
Stodmarsh Wetlands of International Importance (Ramsar) 481 is identical to site 479  


IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest  -
Shrubland Scrub  -
Grassland   -
Wetlands (inland) Fens, transition mires and springs; Rivers and streams; Standing freshwater; Water fringe vegetation  -

Land use

Land-use Extent (% of site)
nature conservation and research -

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Stodmarsh. Downloaded from on 21/10/2016

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