- Category: Water Feature
- Type: Island
- Latitude/Longitude: 49°58'20"N 6°19'34"W
- Eastings/Northings: 89910, 16986
- OS Grid: SV899169
- Mapcode Local: GBR BXRR.K2X
- Mapcode Global: VGYBR.9YFM
Location and coordinates are for the approximate centre of St Helen's within this administrative area.
Geographic features and populated places may cross administrative borders.