- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°55'48"N 3°48'32"W
- Eastings/Northings: 278500, 338500
- OS Grid: SH785385
- Mapcode Local: GBR 63.MK6X
- Mapcode Global: WH66W.GMF2
Location and coordinates are for the approximate centre of Llyn Tryweryn within this administrative area.
Geographic features and populated places may cross administrative borders.