- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°32'16"N 7°43'34"W
- Eastings/Northings: 57505, 864220
- OS Grid: NF575642
- Mapcode Local: GBR 789S.ZVJ
- Mapcode Global: WGV26.9S1R
Location and coordinates are for the approximate centre of Thuisgeirean within this administrative area.
Geographic features and populated places may cross administrative borders.