- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°5'39"N 3°38'11"W
- Eastings/Northings: 290500, 356500
- OS Grid: SH905565
- Mapcode Local: GBR 6B.952L
- Mapcode Global: WH666.3HJ2
Location and coordinates are for the approximate centre of Afon Alwen within this administrative area.
Geographic features and populated places may cross administrative borders.