- Category: Water Feature
- Type: Island
- Latitude/Longitude: 54°50'8"N 4°15'29"W
- Eastings/Northings: 255058, 551328
- OS Grid: NX550513
- Mapcode Local: GBR HHVX.XV7
- Mapcode Global: WH3V3.KQG7
Location and coordinates are for the approximate centre of Garvellan Rocks within this administrative area.
Geographic features and populated places may cross administrative borders.