- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°11'27"N 3°15'7"W
- Eastings/Northings: 314500, 255500
- OS Grid: SO145555
- Mapcode Local: GBR YV.45Y2
- Mapcode Global: VH69W.L624
Location and coordinates are for the approximate centre of Llyn-y-waun within this administrative area.
Geographic features and populated places may cross administrative borders.