Latitude: 53.0636 / 53°3'48"N
Longitude: -3.5599 / 3°33'35"W
OS Eastings: 295565
OS Northings: 352950
OS Grid: SH955529
Mapcode National: GBR 6F.C5R4
Mapcode Global: WH66F.9817
Plus Code: 9C5R3C7R+C2
Map layers use either open data or maps from the Ordnance Survey and Maptiler APIs.
Historic map layers are currently experimental and may not necessarily be available all the time.
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NLS (Historic)
Entry Name: Alwen Dam
Listing Date: 17 February 1998
Last Amended: 17 February 1998
Grade: II
Source: Cadw
Source ID: 19351
Building Class: Water Supply and Drainage
ID on this website: 300019351
Location: The dam is placed across the valley of the Afon Alwen, approximately 4km N of Cerrigydrudion.
County: Conwy
Town: Cerrigydrudion
Community: Cerrigydrudion
Community: Cerrigydrudion
Locality: Alwen Reservoir
Traditional County: Denbighshire