- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°44'14"N 3°23'23"W
- Eastings/Northings: 306267, 316445
- OS Grid: SJ062164
- Mapcode Local: GBR 9P.0N2B
- Mapcode Global: WH795.XG06
Location and coordinates are for the approximate centre of Llyn Llwydiarth within this administrative area.
Geographic features and populated places may cross administrative borders.