- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°58'20"N 3°58'28"W
- Eastings/Northings: 267500, 343500
- OS Grid: SH675435
- Mapcode Local: GBR 5X.JM12
- Mapcode Global: WH55G.XKJ3
Location and coordinates are for the approximate centre of Nant Ddu within this administrative area.
Geographic features and populated places may cross administrative borders.