APPENDIX 2 SITES OF SPECIAL SCIENTIFIC INTEREST

Table 11 Sites of Special Scientific Interest

Location	Date of notification	Principle features of designation	Map
Blackwater Estuary (incorporating Tollesbury Wick Marshes SSSI and Old Hall Marshes SSSI)	1955 / 1957 / 1971 / 1974 / 1990 / 1991 Renotified 12 Jan 1993	Important estuarine ecosystem; grazing marsh habitat international ornithological importance especially for brent geese, grey plover and ring plover; international geomorphological importance. National Nature Reserve in part. Special Protection Area for wild birds (classified 12 May 1995), a Ramsar Site (listed 12 May 1995). Component part of the Mid-Essex Coast SPA and, the Essex Estuaries candidate SAC.	P 3 7 4 14A 15 19 23
Crouch and Roach Estuaries (incorporates River Crouch Marshes SSSI with extensions and deletions)	1955 / 1966 Renotified 11 April 1996	Saltmarsh, grazing marsh and intertidal mud habitats of significant ornithological and flora value. SPA and Ramsar site (29 June 1998). Component part of the Mid-Essex Coast SPA and, the Essex Estuaries candidate SAC.	P 5 5A 17
Dengie	1955 / 1966 / 1971 / 1975 Renotified 1986	Outstanding assemblage of rare coastal flora. Important estuarine ecosystem including tidal mudflat and salt marsh. Largest continuous mudflat in Essex. Geomorphological interest. International ornithological importance, especially for over-wintering brent geese (2% of world population) and knot. Gull roost of c.30,000 off Sales Point. National Nature Reserve. SPA and Ramsar site (1994). Component part of the Mid-Essex Coast SPA and, the Essex Estuaries candidate SAC.	P

Location

Date of notification

Principle features of designation

Map

Blackwater Estuary (incorporating Tollesbury Wick Marshes SSSI and Old Hall Marshes SSSI)

1955 / 1957 / 1971 / 1974 / 1990 / 1991

Renotified 12 Jan 1993

Important estuarine ecosystem; grazing marsh habitat international ornithological importance especially for brent geese, grey plover and ring plover; international geomorphological importance.

National Nature Reserve in part. Special Protection Area for wild birds (classified 12 May 1995), a Ramsar Site (listed 12 May 1995). Component part of the Mid-Essex Coast SPA and, the Essex Estuaries candidate SAC.

P
3
7
4
14A
15
19
23

Crouch and Roach Estuaries (incorporates River Crouch Marshes SSSI with extensions and deletions)

1955 / 1966

Renotified 11 April 1996

Saltmarsh, grazing marsh and intertidal mud habitats of significant ornithological and flora value.

SPA and Ramsar site (29 June 1998). Component part of the Mid-Essex Coast SPA and, the Essex Estuaries candidate SAC.

P
5
5A
17

Dengie

1955 / 1966 / 1971 / 1975

Renotified 1986

Outstanding assemblage of rare coastal flora. Important estuarine ecosystem including tidal mudflat and salt marsh. Largest continuous mudflat in Essex. Geomorphological interest.

International ornithological importance, especially for over-wintering brent geese (2% of world population) and knot. Gull roost of c.30,000 off Sales Point.

National Nature Reserve. SPA and Ramsar site (1994). Component part of the Mid-Essex Coast SPA and, the Essex Estuaries candidate SAC.

Map reference: P = the main proposals map, numbers = the inset map number