- Category: Water Feature
- Type: Island
- Latitude/Longitude: 59°8'13"N 3°18'47"W
- Eastings/Northings: 324952, 1028550
- OS Grid: HY249285
- Mapcode Local: GBR L45L.4ZF
- Mapcode Global: WH692.2LJS
Location and coordinates are for the approximate centre of Outer Castle within this administrative area.
Geographic features and populated places may cross administrative borders.