- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°9'11"N 4°29'19"W
- Eastings/Northings: 229841, 253483
- OS Grid: SN298534
- Mapcode Local: GBR D6.6K87
- Mapcode Global: VH3K1.44VM
Location and coordinates are for the approximate centre of Carreg y Nodwydd within this administrative area.
Geographic features and populated places may cross administrative borders.