- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°1'49"N 4°15'38"W
- Eastings/Northings: 248500, 350500
- OS Grid: SH485505
- Mapcode Local: GBR 5J.F3J1
- Mapcode Global: WH440.J3C7
Location and coordinates are for the approximate centre of Afon Ddu within this administrative area.
Geographic features and populated places may cross administrative borders.