- Category: Water Feature
- Type: Island
- Latitude/Longitude: 60°9'54"N 1°30'44"W
- Eastings/Northings: 427161, 1142400
- OS Grid: HU271424
- Mapcode Local: GBR Q1MW.1QF
- Mapcode Global: XHD31.PRQN
Location and coordinates are for the approximate centre of Groni Stack within this administrative area.
Geographic features and populated places may cross administrative borders.