- Category: Water Feature
- Type: Island
- Latitude/Longitude: 55°37'28"N 6°4'45"W
- Eastings/Northings: 143291, 644334
- OS Grid: NR432443
- Mapcode Local: GBR CFCV.B58
- Mapcode Global: WGZJT.LW9H
Location and coordinates are for the approximate centre of Iomallach within this administrative area.
Geographic features and populated places may cross administrative borders.