| Site of Special Scientific Interest | |
 Thompson Water | |
| Location | Norfolk |
|---|---|
| Grid reference | TL 929 956[1] |
| Interest | Biological |
| Area | 154.7 hectares (382 acres)[1] |
| Notification | 1988[1] |
| Location map | Magic Map |
Thompson Water, Carr and Common is a 154.7-hectare (382-acre) biological Site of Special Scientific Interest north of Thetford in Norfolk.[1][2] Most of it is managed by the Norfolk Wildlife Trust as Thompson Common.[3] It is a Nature Conservation Review site, Grade I,[4] and part of the Norfolk Valley Fens Special Area of Conservation.[5] It is crossed by the Great Eastern Pingo Trail Local Nature Reserve.[6]
This grassland site in the valley of a tributary of the River Wissey has a number of pingos, damp and water filled depressions formed by the melting of ice at the end of the last glaciation. It also has a lake called Thompson Water which, together with its surrounding reedswamp, is important for breeding birds.[7]
The site is open to the public.
- ^ a b c d "Designated Sites View: Thompson Water, Carr and Common". Sites of Special Scientific Interest. Natural England. Retrieved 21 June 2018.
- ^ "Map of Thompson Water, Carr and Common". Sites of Special Scientific Interest. Natural England. Retrieved 21 June 2018.
- ^ "Thompson Common". Norfolk Wildlife Trust. Retrieved 21 June 2018.
- ^ Ratcliffe, Derek, ed. (1977). A Nature Conservation Review. Vol. 2. Cambridge, UK: Cambridge University Press. pp. 138–39. ISBN 0521-21403-3.
- ^ "Designated Sites View: Norfolk Valley Fens". Special Areas of Conservation. Natural England. Retrieved 25 May 2018.
- ^ "Designated Sites View: Great Eastern Pingo Trail". Local Nature Reserves. Natural England. Retrieved 4 June 2018.
- ^ "Thompson Water, Carr and Common citation" (PDF). Sites of Special Scientific Interest. Natural England. Retrieved 21 June 2018.