Blackwater Estuary

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Blackwater Estuary

  • Country: 
    United Kingdom of Great Britain and Northern Ireland
  • Site number: 
  • Area: 
    4,395 ha
  • Designation date: 
  • Coordinates: 
    51°44'N 00°48'E
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Blackwater Estuary. 11/03/92; England; 4,395 ha; 51°45'N 000°52'E. National Nature Reserve, Special Protection Area EC Directive, SSSI. The site, one of the largest estuarine complexes in East Anglia, consists of intertidal mudflats fringed by saltmarsh, shingle and shell banks, and offshore islands. Surrounding terrestrial habitats include a sea wall, grassland, ancient grazing marsh and associated fleet and ditch system. This rich mosaic of habitats supports an outstanding assemblage of nationally scarce plants and a nationally important assemblage of rare invertebrates. Internationally and nationally important numbers of waterbirds winter at the site. Human activities include marine aquaculture, tourism, commercial and sport fishing, shellfish and bait collection. Extended on 12/05/95 from the former Ramsar Site known as Old Hall Marshes. Ramsar site no. 543. Most recent RIS information: 1999.

Administrative region: 

  • National legal designation: 
    • Nature Reserve
    • bird reserve
    • esa
    • ncr
    • nnr
    • sssi
  • Regional (international) legal designations: 
    • EU Natura 2000
  • Last publication date: 


Ramsar Information Sheet (RIS)