- Category: Water Feature
- Type: Island
- Latitude/Longitude: 55°37'19"N 5°28'30"W
- Eastings/Northings: 181295, 641992
- OS Grid: NR812419
- Mapcode Local: GBR DFVV.JW6
- Mapcode Global: WH0L7.VYZB
Location and coordinates are for the approximate centre of Eilean Grianain within this administrative area.
Geographic features and populated places may cross administrative borders.