The areas covered by International, European and National nature conservation designations, and extent of the Indicative Flood Zone for the different Management Units are illustrated in the downloadable pdf files.
Warsash North to Hook Park - The Warsash frontage is represented by this unit. Most of the development is set back and not at risk except for the reclaimed area around the Harbour Master's Office, including a car park and sailing facilities, and the frontage of the College of Nautical Studies further to the south. Internationally important inter-tidal habitat.
HAM7 Crableck Marina to Warsash North - A clay embankment lines the river bank along this stretch, but the unit is a continuation of undeveloped, wooded land with scattered housing. A number of drainage channels feature in the gently sloping hinterland with typical saltmarsh and mudflats characterising the nearshore. There are no assets at risk requiring protection.
HAM6 Crableck Marina - The marina and its associated boatyard is an important facility to the boating community of the Hamble and its narrow mudflats have international nature conservation value. Flooding could inundate the entire frontage resulting in the loss of the marina.
HAM5 Swanwick Shore Road to Crableck Marina - This agricultural and wooded stretch features a few coastal houses with the southern extremes low-lying and giving way to Crableck Marina. The only major development is the marina itself.
HAM4 Lands End Lane to Swanwick Shore Road - Covering both banks of the Hamble up to Bursledon Railway Bridge, this unit is predominantly low-lying with some land reclaimed. The Bursledon and Lower Swanwick developments include industrial, commercial, residential and maritime uses. The flood threat covers extensive residential and industrial areas including part of the railway line as it approaches the railway bridge.
HAM3 Badnam Creek to Lands End Lane - This unit is fronted by Lincegrove and Rackett's Marshes. Backing the marsh is a railway line running over undeveloped land. Major assets including the railway line are not at risk.
HAM2 Satchell Marshes to Badnam Creek - Fronting this unit is Satchell Marsh which is of international nature conservation importance. Inland of the marshes is part of Hamble village, the fringe of which is threatened by flooding, with Mercury Yacht Marina also threatened.
HAM1 Hamble Common Point to Satchell Marshes - This unit lies on the west bank of the River Hamble backing onto Hamble Common and the developed Hamble village frontage, one of the UK's major yachting centres.
NET6 Hamble Oil Terminal to Hamble Common Point - Hamble Common, a designated SSSI, backs this coastal stretch containing several Scheduled Ancient Monuments. Potential outflanking of the Oil Terminal flood defences.
NET5 Ensign Industrial Park and Hamble Oil Terminal - The BP-owned Hamble Oil Terminal is a major economic asset to the area but is sited on flood threatened land. The main operational sections of this facility are threatened.
NET4 Cliff House to Ensign Industrial Park - There are no developments at risk along the cliff tops of this coastline.
NET3 Netley Hard to Cliff House, Hamble - The Royal Victoria Country Park dominates this coastline and is an important recreational amenity. Erosion threatens the coastal fringe of the park, Netley Sailing Club, and an access road into the park.
NET2 Netley Castle to Netley Hard - This stretch is predominantly the residential frontage of Netley, which includes Netley Castle. The area is fronted by low cliffs. The fronting inter-tidal mudflats are of international nature conservation importance. Cliff retreat poses a significant threat to coastal developments here.
NET1 Weston Point to Netley Castle - The Weston shoreline is predominantly recreational open space, partially backed by the Weston and Netley residential areas, and protected by a vegetated shingle bank, and mudflats which are of international conservation value.
ITCH4 Cobden Bridge to Weston Point - This frontage is a mix of residential, commercial and industrial uses with a majority built on reclaimed land. The mudflats around Bitterne Manor, Spitfire Quay and Woolston are of international nature conservation importance. Flood risk to these developments may extend to the edges of residential areas further inland.
ITCH3 Woodmill Lane Bridge to Cobden Bridge - This coastline on the east bank of the Itchen features the Southampton City Council owned Riverside Park. This recreational area is low-lying and backs into the residential Bitterne Park.
ITCH2 Ocean Village to Woodmill Lane Bridge - Ocean Village comprises leisure facilities and other recreational outlets as well as a growing residential and office presence. Between Crosshouse and Northam Bridge lies the most densely developed area on the Itchen's west bank. This coastal stretch is fronted by wharfs and jetties and is heavily protected. Flood risk area on the west bank of the Itchen, extends up to 800m inland.
ITCH1 South tip of Southampton Port to Ocean Village - Located on the west side of the Itchen river mouth, the frontage includes Empress Dock which is a continuation of the ABP-owned Port of Southampton. The dock facilities are located above flood levels, to ensure operations are not interrupted.
TEST6 Redbridge to South tip, Southampton Port - The ABP-owned Port of Southampton dominates this unit. The port frontage is built on reclaimed land above flood levels. Mayflower Park towards the east backs into the port's commercial area and is part of the Southampton city centre. Several scheduled ancient monuments are located here.
TEST5 Eling Creek to Redbridge - This frontage is backed by the southern end of Totton. Much of densely developed Totton is low-lying and a flood risk while the fronting mudflats and saltmarsh are international nature conservation value. Commercial and industrial properties, schools and recreational land as well as transport routes into Southampton.
TEST4 Magazine Hard, North to Eling Creek - This predominantly agricultural and wooded stretch includes the village of Eling. Eling's history traces back to medieval times with the village being developed around a toll bridge over the Eling Channel and an 18th century tide mill. Fronting saltmarsh for part of length.
TEST3 Marchwood Military Port to Magazine Hard, North - This coastline includes business, industrial and office developments. Adjacent to this is the RNAD, a site of considerable historic importance.
TEST2 Marchwood Military Port - Marchwood Military Port, the only one of its kind in the country, and Cracknore Hard, an industrial area, form this management unit. Flooding threatens the area north of the Port around the industrial area, including Husbands Shipyard. Much of this area is proposed for development.
TEST1 Hythe Marina to Marchwood Military Port - This coastline comprises Dibden Bay, owned by Associated British Ports, Southampton. This low grade agricultural land remains undeveloped except for Hythe Marina to the southwest. The mud and shingle foreshore is of international nature conservation importance.
FAW7 Hythe Sailing Club to Hythe Marina - Hythe is famous as the site where the 'Flying Boats' of the 1930's and 1940's were built. Its waterfront includes residential and military interests. The fronting mudflats are of international nature conservation importance. Waterfront land development.
FAW6 Fawley Oil Refinery to Hythe Sailing Club - This stretch of coast provides a break between the Esso petrochemical complexes and Hythe. The unit is mostly wooded or agricultural along with a rail line and road, and is partly backed by developments at Hythe. The fronting saltmarsh remains one of international nature conservation importance. Set-back development and transport links.
FAW5 Fawley Oil Refinery - Fawley Oil Refinery, one of the largest in Europe, is owned by Esso. A flood risk area extends inland behind the refinery's marine terminal to sections vital to the operation of the refinery. This major economic asset clearly warrants continued protection, and flood prevention here involves the co-coordinated protection of adjacent low-lying units.
FAW4 Fawley Power Station to Fawley Oil Refinery - This mostly undeveloped coastline is owned by Esso and backed by the village of Fawley and the hamlet of Ashlett. Agricultural land belonging to Cadland Estate completes the hinterland. It is necessary to ensure flooding is prevented along this coastline in order to protect assets.
FAW3 Fawley Power Station - The Fawley Power Station lies on low-lying reclaimed land susceptible to flooding. This still poses a danger to the facilities although the main buildings are above flood levels. The industrial presence has not undermined the international nature conservation value of the fronting saltmarsh and mudflats. The power station being a major economic asset requires protection against flooding through maintenance and renewal of existing defence structures.
FAW2 Calshot Spit to Fawley Power Station - This unit is mostly reclaimed land, locally known as Tom Tiddler's Ground; this grassland is of local nature conservation importance while its fronting saltmarshes and mudflats are of international nature conservation value. Frontage owned by Hampshire County Council.
FAW1 Lee to Calshot Spit - This coastline is a low energy environment characterised by saltmarshes and mudflats, within the Calshot Marshes Local Nature Reserve. Much of the land is undeveloped while its waters are used for sports activities generated by the facilities on Calshot Spit. Defences are aimed at the prevention of flooding, protecting developments on the spit. Frontage and defences owned by Hampshire County Council.