- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°44'10"N 6°58'53"W
- Eastings/Northings: 103632, 882747
- OS Grid: NG036827
- Mapcode Local: GBR 9848.QY2
- Mapcode Global: WGW2Q.QTM4
Location and coordinates are for the approximate centre of Holm within this administrative area.
Geographic features and populated places may cross administrative borders.