- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°2'27"N 4°50'59"W
- Eastings/Northings: 204650, 241888
- OS Grid: SN046418
- Mapcode Local: GBR CQ.FRNV
- Mapcode Global: VH1Q9.WYGT
Location and coordinates are for the approximate centre of Carregedrywy within this administrative area.
Geographic features and populated places may cross administrative borders.