- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°57'54"N 5°26'54"W
- Eastings/Northings: 196115, 902523
- OS Grid: NB961025
- Mapcode Local: GBR D7XN.YYH
- Mapcode Global: WH071.82R6
Location and coordinates are for the approximate centre of Càrn Iar within this administrative area.
Geographic features and populated places may cross administrative borders.