- Category: Water Feature
- Type: Island
- Latitude/Longitude: 53°21'34"N 4°15'28"W
- Eastings/Northings: 249840, 387131
- OS Grid: SH498871
- Mapcode Local: GBR HMVT.JCT
- Mapcode Global: WH428.KTN8
Location and coordinates are for the approximate centre of Carreg Ddafad within this administrative area.
Geographic features and populated places may cross administrative borders.