- Category: Water Feature
- Type: Island
- Latitude/Longitude: 60°9'59"N 1°29'36"W
- Eastings/Northings: 428215, 1142560
- OS Grid: HU282425
- Mapcode Local: GBR Q1NV.Y4Z
- Mapcode Global: XHD31.YQCK
Location and coordinates are for the approximate centre of Gro Stack within this administrative area.
Geographic features and populated places may cross administrative borders.