- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°52'2"N 5°11'24"W
- Eastings/Northings: 180465, 223578
- OS Grid: SM804235
- Mapcode Local: GBR C8.SK9K
- Mapcode Global: VH1R3.0B06
Location and coordinates are for the approximate centre of Carreg Dilys within this administrative area.
Geographic features and populated places may cross administrative borders.