Kennet and Lambourn Floodplain

Kennet and Lambourn Floodplain

Site of Special Scientific Interest
Rack Marsh
Location within Berkshire
Location	Berkshire Wiltshire
Grid reference	SU 370 691[1]
Coordinates	51°25′12″N 1°28′08″W / 51.420°N 1.469°W / 51.420; -1.469
Interest	Biological
Area	23.4 hectares (58 acres)[1]
Notification	1996[1]
Location map	Magic Map

Kennet and Lambourn Floodplain is a 23.4-hectare (58-acre) biological Site of Special Scientific Interest in six widely separated areas in the floodplains of the River Lambourn in Berkshire and the River Kennet in Wiltshire, England.^[1][2] It is a Nature Conservation Review site^[1] and part of the Kennet and Lambourn Floodplain Special Area of Conservation.^[3] One of the areas, Rack Marsh, is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.^[4]

These six areas all have fen or swamp with large numbers of Desmoulin's whorl snail, which is listed in the British Red Data Book as it is a nationally rare and declining species. One of the areas, Eddington Marsh, also has unimproved species-rich grassland with several nationally scarce invertebrates, such as the flies Pherbellia griseola, Psacadina verbekei, Platypalpus niger and Oxycera morrisi.^[5]

• SU316705 51°25′56″N 1°32′43″W / 51.4321°N 1.5454°W / 51.4321; -1.5454
• SU402737 51°27′37″N 1°25′17″W / 51.4604°N 1.4213°W / 51.4604; -1.4213
• SU345687 51°24′57″N 1°30′14″W / 51.4158°N 1.5038°W / 51.4158; -1.5038
• SU435701 51°25′40″N 1°22′27″W / 51.4278°N 1.3743°W / 51.4278; -1.3743
• SU453692 51°25′10″N 1°20′55″W / 51.4195°N 1.3485°W / 51.4195; -1.3485
• SU450674 51°24′12″N 1°21′11″W / 51.4034°N 1.3530°W / 51.4034; -1.3530

• Location SU556655 51°23′07″N 1°12′03″W / 51.3853°N 1.2009°W / 51.3853; -1.2009 is shown as a seventh area in the citation, but the citation also says that there are only six areas in the site^[5] and it is not shown on the Natural England map.^[2]

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