- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°6'21"N 4°2'15"W
- Eastings/Northings: 263685, 358463
- OS Grid: SH636584
- Mapcode Local: GBR 5T.89NL
- Mapcode Global: WH54V.Y6F8
Location and coordinates are for the approximate centre of Llyn y Cwn within this administrative area.
Geographic features and populated places may cross administrative borders.