| Langham Pond | |
| Aos: | Surrey |
| Interest: | Biological |
| Area: | 26.7ha |
| Notifydate: | 1986 |
| Map: | Magic Map |
Langham Pond is a 26.7abbr=offNaNabbr=off biological Site of Special Scientific Interest north of Egham in Surrey.[1] [2]
The pond and its surrounding alluvial meadows on chalk represent a habitat unique in southern England. The pond is the remains of an oxbow lake, formed when a meander of the River Thames was bypassed. The pond contains all four British duckweeds, three nationally scarce plants and a species of fly which has been found nowhere else in Britain, Cerodontha ornata.[3]