- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°41'16"N 7°42'57"W
- Eastings/Northings: 59535, 880815
- OS Grid: NF595808
- Mapcode Local: GBR 78BD.QN3
- Mapcode Global: WGV1M.F1Z8
Location and coordinates are for the approximate centre of Heisgeir Eagach within this administrative area.
Geographic features and populated places may cross administrative borders.