- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°5'31"N 5°32'12"W
- Eastings/Northings: 147126, 27338
- OS Grid: SW471273
- Mapcode Local: GBR DXQF.LMC
- Mapcode Global: VH05H.ZY76
Location and coordinates are for the approximate centre of Rôskilly within this administrative area.
Geographic features and populated places may cross administrative borders.