- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°22'54"N 3°29'38"W
- Eastings/Northings: 293875, 54597
- OS Grid: SX938545
- Mapcode Local: GBR QY.GFVJ
- Mapcode Global: FRA 38K1.BLS
Location and coordinates are for the approximate centre of Mag Rock within this administrative area.
Geographic features and populated places may cross administrative borders.