- Category: Water Feature
- Type: Island
- Latitude/Longitude: 55°33'11"N 1°37'11"W
- Eastings/Northings: 424077, 628914
- OS Grid: NU240289
- Mapcode Local: GBR K447.23
- Mapcode Global: WHC0V.2PW4
Location and coordinates are for the approximate centre of Roan Rock within this administrative area.
Geographic features and populated places may cross administrative borders.