- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°1'14"N 4°52'46"W
- Eastings/Northings: 202525, 239724
- OS Grid: SN025397
- Mapcode Local: GBR CP.GY1R
- Mapcode Global: VH1QH.CGRS
Location and coordinates are for the approximate centre of Careg-yr Adar within this administrative area.
Geographic features and populated places may cross administrative borders.