- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°34'27"N 2°42'23"W
- Eastings/Northings: 351132, 186404
- OS Grid: ST511864
- Mapcode Local: GBR JK.D5WL
- Mapcode Global: VH880.1PHF
Location and coordinates are for the approximate centre of Gruggy within this administrative area.
Geographic features and populated places may cross administrative borders.