Lewes Brooks

Lewes Brooks is a 339.1-hectare (838-acre) biological Site of Special Scientific Interest south of Lewes in East Sussex.^[1][2] The Falmer-Glynde and the Ouse valleys meet in Lewes Brooks, and the Upper and Lower Rises are the remains of the chalk uplands eroded by the Ouse.^[3]

Lewes Brooks

Site of Special Scientific Interest
Location	East Sussex
Grid reference	TQ 421 076[1]
Interest	Biological
Area	339.1 hectares (838 acres)[1]
Notification	1988[1]
Location map	Magic Map

This site is on the flood plain of the River Ouse, and has fields separated by ditches. Variations in salinity from brackish to spring-fed, together with periodic clearing of ditches, produce a variety of habitats. The site is home to a diverse array of invertebrate fauna, especially water beetles. There are also rare snails, flies and moths.^[4]