- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°17'3"N 4°10'41"W
- Eastings/Northings: 254893, 378591
- OS Grid: SH548785
- Mapcode Local: GBR JN10.QX2
- Mapcode Global: WH53T.SPMZ
Location and coordinates are for the approximate centre of Llyn Llwydiarth within this administrative area.
Geographic features and populated places may cross administrative borders.