- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°13'47"N 3°34'27"W
- Eastings/Northings: 292570, 260260
- OS Grid: SN925602
- Mapcode Local: GBR YF.1Q0C
- Mapcode Global: VH5D2.066T
Location and coordinates are for the approximate centre of Llyn y Ferlen within this administrative area.
Geographic features and populated places may cross administrative borders.