- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°22'49"N 3°7'18"W
- Eastings/Northings: 322023, 165180
- OS Grid: ST220651
- Mapcode Local: GBR J0.S9FP
- Mapcode Global: VH6FT.TKZQ
Location and coordinates are for the approximate centre of Castle Rock within this administrative area.
Geographic features and populated places may cross administrative borders.