- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°41'51"N 3°8'55"W
- Eastings/Northings: 322460, 311736
- OS Grid: SJ224117
- Mapcode Local: GBR B0.31FT
- Mapcode Global: WH79H.LGR7
Location and coordinates are for the approximate centre of Granllyn Pool within this administrative area.
Geographic features and populated places may cross administrative borders.