- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 51°55'44"N 3°15'45"W
- Eastings/Northings: 313280, 226349
- OS Grid: SO132263
- Mapcode Local: GBR YV.NPB8
- Mapcode Global: VH6C1.DSJ5
Location and coordinates are for the approximate centre of Llyn Syfaddan within this administrative area.
Geographic features and populated places may cross administrative borders.