- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°27'19"N 3°37'53"W
- Eastings/Northings: 286747, 174193
- OS Grid: SS867741
- Mapcode Local: GBR HB.MF9N
- Mapcode Global: VH5HQ.0PL4
Location and coordinates are for the approximate centre of Black Rocks within this administrative area.
Geographic features and populated places may cross administrative borders.