Upware North Pit is a 1.1-hectare (2.7-acre) biological Site of Special Scientific Interest north-west of Wicken in Cambridgeshire.
[1][2] This site has several flooded pits with areas of willow and hawthorn.
It is one of only two British sites which has water germander, a plant listed in the British Red Data Books of threatened species.
Other unusual aquatic plants are great water dock and greater pond sedge.
[3] There is access to the site from the Fen Rivers Way north of Upware.