- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°16'44"N 4°1'53"W
- Eastings/Northings: 261500, 266500
- OS Grid: SN615665
- Mapcode Local: GBR 8V.YD0W
- Mapcode Global: VH4FZ.2ZJ5
Location and coordinates are for the approximate centre of Afon Ddu within this administrative area.
Geographic features and populated places may cross administrative borders.