- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°38'50"N 3°26'33"W
- Eastings/Northings: 302500, 306500
- OS Grid: SJ025065
- Mapcode Local: GBR 9M.672Q
- Mapcode Global: WH79K.2QZ8
Location and coordinates are for the approximate centre of Llyn y Grinwydden within this administrative area.
Geographic features and populated places may cross administrative borders.