- Category: Water Feature
- Type: Island
- Latitude/Longitude: 58°15'56"N 6°51'27"W
- Eastings/Northings: 115248, 941064
- OS Grid: NB152410
- Mapcode Local: GBR 96GW.FR2
- Mapcode Global: WGX1D.MHPS
Location and coordinates are for the approximate centre of Gàisgeir within this administrative area.
Geographic features and populated places may cross administrative borders.