| Hanningfield Reservoir | |
|---|---|
.jpg) Aerial view with dam at right | |
  Hanningfield Reservoir | |
| Location | Essex |
| Coordinates | 51°39′30″N 0°30′15″E / 51.65833°N 0.50417°E |
| Type | reservoir |
| Primary inflows | 240 Ml/d |
| Primary outflows | 210 Ml/d |
| Basin countries | United Kingdom |
| Managing agency | Essex and Suffolk Water |
| Built | 1951-57 |
| First flooded | 1957 |
| Max. width | 3.25 km (2.02 mi) |
| Surface area | 352 ha (870 acres) |
| Average depth | 7.62 m (25.0 ft) |
| Max. depth | 16.76 m (55.0 ft) |
| Water volume | 25,500 million litres (900,000,000 cu ft) |
| Shore length1 | 6 mi (9.7 km) |
| Surface elevation | 55 m (180 ft) |
| Islands | None |
| Site of Special Scientific Interest | |
 | |
| Location | Essex |
| Grid reference | TQ 730980 |
| Interest | Biological |
| Area | 402.9 ha (996 acres) |
| Notification | 1985 |
| 1 Shore length is not a well-defined measure. | |
Hanningfield Reservoir is a large 25,500-million-litre (900,000,000 cu ft) pumped storage reservoir located between Billericay and Chelmsford in Essex. It has a surface area of 352 hectares (870 acres) and is owned and operated by Essex and Suffolk Water.[1]
The reservoir is part of a 402.9 ha (996 acres) biological Site of Special Scientific Interest. The site is also owned by Essex and Suffolk Water and is run by them in conjunction with the Essex Wildlife Trust. The reservoir is covered by a Bird Sanctuary Order.[2][3][4]
- ^ "Welcome to Hanningfield reservoir". Retrieved 8 September 2021.
- ^ "Hanningfield Reservoir citation" (PDF). Sites of Special Scientific Interest. Natural England. Archived from the original (PDF) on 4 March 2016. Retrieved 1 August 2016.
- ^ "Map of Hanningfield Reservoir". Sites of Special Scientific Interest. Natural England. Retrieved 1 August 2016.
- ^ "Hanningfield Reservoir Visitor Centre". Essex Wildlife Trust. Retrieved 1 August 2016.