- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°54'41"N 4°8'21"W
- Eastings/Northings: 256249, 337041
- OS Grid: SH562370
- Mapcode Local: GBR 5P.NP06
- Mapcode Global: WH55S.D26T
Location and coordinates are for the approximate centre of Garreg-goch within this administrative area.
Geographic features and populated places may cross administrative borders.