- Category: Water Feature
- Type: Island
- Latitude/Longitude: 58°57'20"N 3°17'21"W
- Eastings/Northings: 325935, 1008340
- OS Grid: HY259083
- Mapcode Local: GBR L571.XM4
- Mapcode Global: WH6B1.F5X7
Location and coordinates are for the approximate centre of Outer Holm within this administrative area.
Geographic features and populated places may cross administrative borders.