Llyn Cefni
Encyclopedia
Llyn Cefni is a small reservoir
in the centre of Anglesey
, Wales
which is managed by Welsh Water
and Hamdden Ltd. It is located just one kilometre north of the island's county town of Llangefni
and is the source of the Afon Cefni
and other smaller watercourses. The reservoir and the immediate surrounding area has been designated as a nature reserve
and as a further measure of conservation an artificial plantation of trees runs along its north shore. Also of interest are the tracks of the Anglesey Central Railway
which although no longer used still run over an embankment
which crosses the water. The reservoir is easily accessible from Llangefni as well defined paths run from the town through the local nature reserve, The Dingle
.
At the maximum length of 2.3 kilometres and a total water surface area of 0.86 km² it is the second largest body of water on the island after Llyn Alaw
, also a reservoir. The is a dam
on the south-east edge of the reservoir next to which is a car park.
Reservoir
A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...
in the centre of Anglesey
Anglesey
Anglesey , also known by its Welsh name Ynys Môn , is an island and, as Isle of Anglesey, a county off the north west coast of Wales...
, Wales
Wales
Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...
which is managed by Welsh Water
Welsh Water
Dŵr Cymru Welsh Water is a company which supplies drinking water and wastewater services to most of Wales and parts of western England.It is regulated under the Water Industry Act 1991.-History:...
and Hamdden Ltd. It is located just one kilometre north of the island's county town of Llangefni
Llangefni
Llangefni is the county town of Anglesey in Wales and contains the principal offices of the Isle of Anglesey County Council. According to the United Kingdom Census 2001, the population of Llangefni was 4,662 people and it is the second largest settlement on the island...
and is the source of the Afon Cefni
Afon Cefni
Afon Cefni is one of the major rivers on the island of Anglesey, Wales. It is long. The river starts at the Llyn Cefni in the centre of the island and then runs south through the county town of Llangefni. Just north of the A55 the river turns and flows south-west. It passes through the flatlands...
and other smaller watercourses. The reservoir and the immediate surrounding area has been designated as a nature reserve
Nature reserve
A nature reserve is a protected area of importance for wildlife, flora, fauna or features of geological or other special interest, which is reserved and managed for conservation and to provide special opportunities for study or research...
and as a further measure of conservation an artificial plantation of trees runs along its north shore. Also of interest are the tracks of the Anglesey Central Railway
Anglesey Central Railway
The Anglesey Central Railway was a long standard-gauge railway in Anglesey, Wales, connecting the port of Amlwch and the county town of Llangefni with the North Wales Coast Line at Gaerwen. Built as an independent railway, the railway opened in portions from 1864 to 1867...
which although no longer used still run over an embankment
Embankment (transportation)
To keep a road or railway line straight or flat, and where the comparative cost or practicality of alternate solutions is prohibitive, the land over which the road or rail line will travel is built up to form an embankment. An embankment is therefore in some sense the opposite of a cutting, and...
which crosses the water. The reservoir is easily accessible from Llangefni as well defined paths run from the town through the local nature reserve, The Dingle
The Dingle, Anglesey
The Dingle is a nature reserve found just to the north of Llangefni, Anglesey, north Wales. Dingle is a common placename in the English language, which means "steep wooded valley", which describes it well. However, like many similar English names for natural attractions in Wales, e.g. Fairy Glen,...
.
At the maximum length of 2.3 kilometres and a total water surface area of 0.86 km² it is the second largest body of water on the island after Llyn Alaw
Llyn Alaw
Llyn Alaw is a man-made reservoir on Anglesey, North Wales. It is used to supply drinking water to the northern half of the island and does so at a rate of 35 million litres a day. It was created in 1966 on existing marshland....
, also a reservoir. The is a dam
Dam
A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...
on the south-east edge of the reservoir next to which is a car park.