- Category: Water Feature
- Type: Island
- Latitude/Longitude: 49°56'53"N 6°22'41"W
- Eastings/Northings: 86025, 14536
- OS Grid: SV860145
- Mapcode Local: GBR BXMT.K85
- Mapcode Global: VGYBX.DKDH
Location and coordinates are for the approximate centre of Black Rocks within this administrative area.
Geographic features and populated places may cross administrative borders.