- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°1'24"N 4°8'27"W
- Eastings/Northings: 256500, 349500
- OS Grid: SH565495
- Mapcode Local: GBR 5P.FGLG
- Mapcode Global: WH556.C8CG
Location and coordinates are for the approximate centre of Llyn Llywelyn within this administrative area.
Geographic features and populated places may cross administrative borders.