- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°25'40"N 2°53'11"W
- Eastings/Northings: 338461, 170241
- OS Grid: ST384702
- Mapcode Local: GBR JB.P8M5
- Mapcode Global: VH7C6.XCCS
Location and coordinates are for the approximate centre of Blackstone Rocks within this administrative area.
Geographic features and populated places may cross administrative borders.