- Category: Water Feature
- Type: Island
- Latitude/Longitude: 56°28'22"N 6°18'27"W
- Eastings/Northings: 134827, 739522
- OS Grid: NM348395
- Mapcode Local: GBR BCTL.TYJ
- Mapcode Global: WGYCJ.2KPL
Location and coordinates are for the approximate centre of Mâisgeir within this administrative area.
Geographic features and populated places may cross administrative borders.