The Afon Alaw () is a river on

Anglesey Anglesey ( ; ) is an island off the north-west coast of Wales. It forms the bulk of the Principal areas of Wales, county known as the Isle of Anglesey, which also includes Holy Island, Anglesey, Holy Island () and some islets and Skerry, sker ...

(

Welsh Welsh may refer to: Related to Wales * Welsh, of or about Wales * Welsh language, spoken in Wales * Welsh people, an ethnic group native to Wales Places * Welsh, Arkansas, U.S. * Welsh, Louisiana, U.S. * Welsh, Ohio, U.S. * Welsh Basin, during t ...

: Ynys Môn) in

Wales Wales ( ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by the Irish Sea to the north and west, England to the England–Wales border, east, the Bristol Channel to the south, and the Celtic ...

which rises near Llanerch-y-medd and flows northwards into the reservoir of

Llyn Alaw Llyn Alaw (meaning: ''Lily Lake'') is a man-made reservoir on Anglesey, North Wales managed by Dŵr Cymru Welsh Water. It is a shallow lake and was built in 1966. It is a Site of Special Scientific Interest and a destination for overwintering b ...

. Below the dam it then flows southwestwards to the island's west coast near

Llanfachraeth Llanfachraeth is a village and community (Wales), community in Anglesey, Wales. It is located near the west coast of the island, at the head of the Afon Alaw, Alaw estuary, east of Holyhead, south west of Amlwch and north west of Llangefni. ...

. Its lower reaches, west of the

A5025 road The A5025 is an 'A' road that runs from Llanfairpwllgwyngyll to Valley in Anglesey, Wales. A major road around the north coast of the isle, it runs up the east, north and finally north-west side of the island via several places including Benll ...

, are tidal.Ordnance Survey Landranger map sheet 114 ''Anglesey/Môn''

References

Rivers of Anglesey Fjards of Wales {{Wales-river-stub