Grafham Water
| Grafham Water | |
|---|---|
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| Northern bay of Grafham Water | |
| Location | Cambridgeshire |
| Coordinates | 52°17′53″N 0°18′54″W / 52.29810°N 0.31504°WCoordinates: 52°17′53″N 0°18′54″W / 52.29810°N 0.31504°W |
| Lake type | reservoir |
| Basin countries | United Kingdom |
Grafham Water (TL 150 680) is a reservoir with a circumference of about 10 miles (16 km). It is located between the villages of Grafham and Perry in the English county of Cambridgeshire (Huntingdonshire District).
The lake was created by filling a valley full of water which is retained by an earth and concrete dam built in 1965 and is extracted and processed at an adjacent Anglian Water treatment plant before being piped away as drinking water.
The water level can be controlled constantly via the pumps which pump water from the River Great Ouse nearby. There are two pumping stations associated with the reservoir. One is located just behind the dam, the other at Offord Cluny alongside the River Great Ouse. At times of high potential flood risk, Grafham Water treatment works can increase the amount of water it takes up to maximum capacity (330 Million litres a day...if its not already at maximum capacity) to help reduce the risk of flooding along the river.
The reservoir was immediately colonised by wildlife and a nature reserve surrounding the western side of the reservoir was soon created to help maintain and enhance the site's potential.[1] The nature reserve contains semi-natural ancient (at least 400 years old) woodlands and more recent plantation woodlands, grasslands and wetland habitats such as reedbeds, willow and open water.[2] As of January 2011, it was the only site in England, and the first in the UK, to harbour the invasive killer shrimp (Dikerogammarus villosus).[3][4]
Grafham Water is popular for a range of leisure activities including boating, fly fishing and cycling.
| Grafham Water | |
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| Location | Huntingdonshire, UK |
| Area | 1,500 acres (6.07 km²) |
| Volume | 50,000,000 m³ |
| Owners | Anglian Water |
| Nature Reserve Managers | The Wildlife Trust |
| SSSI Ref | 1002739 |
[edit] References
- ^ Wildlife Trust: Grafham Water
- ^ Nick Bingham, Andrew Blowers, Christopher Belshaw (2003). Contested Environments. John Wiley and Sons. ISBN 0470850000. http://books.google.com/books?vid=ISBN0470850000&id=88WLT_oPLdcC&pg=PA139&lpg=PA139&dq=%22Grafham+Water%22&ie=ISO-8859-1&output=html.
- ^ "Alien 'killer' shrimp found in UK". BBC News. September 9, 2010. http://www.bbc.co.uk/news/science-environment-11246642. Retrieved September 9, 2010.
- ^ "Invasive shrimp found at Grafham Water". Environment Agency. September 9, 2010. http://www.environment-agency.gov.uk/news/123215.aspx. Retrieved May 22, 2011.
[edit] External links
Nature Reserve & Wildlife
Activities at Grafham Water
