- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°55'26"N 3°36'55"W
- Eastings/Northings: 291500, 337500
- OS Grid: SH915375
- Mapcode Local: GBR 6C.MXZ0
- Mapcode Global: WH66Z.FRMT
Location and coordinates are for the approximate centre of Afon Tryweryn within this administrative area.
Geographic features and populated places may cross administrative borders.