- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°29'5"N 0°35'14"W
- Eastings/Northings: 498186, 177175
- OS Grid: SU981771
- Mapcode Local: GBR F8F.VQ9
- Mapcode Global: VHFT8.RXVZ
Location and coordinates are for the approximate centre of Sumptermead Ait within this administrative area.
Geographic features and populated places may cross administrative borders.