- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°14'5"N 3°51'41"W
- Eastings/Northings: 267341, 38876
- OS Grid: SX673388
- Mapcode Local: GBR QB.NPSX
- Mapcode Global: FRA 28SD.RG0
Location and coordinates are for the approximate centre of Graystone Ledge within this administrative area.
Geographic features and populated places may cross administrative borders.