- Category: Water Feature
- Type: Island
- Latitude/Longitude: 53°19'21"N 4°39'16"W
- Eastings/Northings: 223295, 383917
- OS Grid: SH232839
- Mapcode Local: GBR GMWX.GPW
- Mapcode Global: WH314.GRS6
Location and coordinates are for the approximate centre of Ynys Wellt within this administrative area.
Geographic features and populated places may cross administrative borders.