| Site of Special Scientific Interest | |
 | |
| Location | Hertfordshire |
|---|---|
| Grid reference | TL230043 |
| Interest | Biological |
| Area | 11.3 hectares |
| Notification | 1986 |
| Location map | Magic Map |
Water End Swallow Holes is a biological site of Special Scientific Interest in Hertfordshire, south-east England. Located in Welham Green and under the planning authority of Welwyn Hatfield District Council, it has an area of 11.3 hectares (28 acres).[1][2]
The site covers more than fifteen swallet holes, the only ones in chalk which are a permanent feature of the landscape. Next to the holes is a swamp area of willow carr which is biologically important, and in deep water there is reed sweet-grass. The site also has areas of woodland and grassland.[1] From the sinkholes the waters become the River Colne.
There is access to the site from Station Road.
Wikimedia Commons has media related to Water End Swallow Holes.
- ^ a b "Water End Swallow Holes citation" (PDF). Sites of Special Scientific Interest. Natural England. Retrieved 13 January 2015.
- ^ "Map of Water End Swallow Holes". Sites of Special Scientific Interest. Natural England. Retrieved 13 January 2015.