- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°1'26"N 4°53'24"W
- Eastings/Northings: 201810, 240135
- OS Grid: SN018401
- Mapcode Local: GBR CP.GMP5
- Mapcode Global: VH1QH.6D45
Location and coordinates are for the approximate centre of Carreg March within this administrative area.
Geographic features and populated places may cross administrative borders.