Landscape - Llyn Alaw

Llyn Alaw reservoir is Anglesey’s largest lake.  It is situated to the north west of the village of Llannerchymedd and overlies the former peatland of Cors y Bol.  It was built in the 1960s, and used to be the supply of drinking water for the northern half of Anglesey. 

The lake lies in an open landscape and has a large car park. It is fringed with vegetation, and there is woodland and scrub along parts of the lake shores.  There is marshy grassland and scrub at the northern end of the lake, with exposed mud around the lake margins at lower water levels.  The reservoir has a number of small islands, and there are two bird hides, three picnic sites and a network of paths. There are up to 3 miles of paths around the lake shore, but they do not form a complete circuit. There is also a small information centre with details about Llyn Alaw and its wildlife. The lake supports a recreational trout fishery, for which fishing permits are available.

For a list of public toilets on the island, please see Isle of Anglesey County Council - public toilets

A list of the toilets available through the Community Toilet Grant Scheme is also available

Other Things to do

  • Cycling


    'What better way to experience all the natural beauty that Anglesey has to offer than by bike. '

  • Active and Outdoors

    'Active and Outdoors'

    'Making the most of the great outdoors is easy on Anglesey, as the great outdoors is something we have plenty of. '

  • Walking


    'Going for a walk on Anglesey is a pleasure in itself.'

  • Countryside


    'Over 220 square miles of Anglesey’s landscapes are an Area of Outstanding Natural Beauty. '

Other Attractions

  • Isle of Anglesey Rural Cycling Network

    'Isle of Anglesey Rural Cycling Network'

    'Maps and descriptions of the cycle routes. '

  • Landscape Cemlyn Bay

    'Landscape Cemlyn Bay'

    'Cemlyn’s enchanting curved bay is unique with its shingle ridge known as Esgair Cemlyn dividing the open sea from a saline coastal lagoon - considered to be the best...'

  • Oriel Ynys Môn

    'Oriel Ynys Môn'

    'Anglesey's art and heritage gallery and museum.'