- Category: Water Feature
- Type: Island
- Latitude/Longitude: 56°9'17"N 5°9'46"W
- Eastings/Northings: 203656, 700302
- OS Grid: NN036003
- Mapcode Local: GBR FDMF.XJN
- Mapcode Global: WH1K0.NKNF
Location and coordinates are for the approximate centre of Roc Dearg within this administrative area.
Geographic features and populated places may cross administrative borders.