- Category: Water Feature
- Type: Island
- Latitude/Longitude: 58°32'36"N 4°17'56"W
- Eastings/Northings: 266276, 963995
- OS Grid: NC662639
- Mapcode Local: GBR H6R4.PFR
- Mapcode Global: WH382.XJYD
Location and coordinates are for the approximate centre of Heiskeir within this administrative area.
Geographic features and populated places may cross administrative borders.