- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°57'29"N 4°16'18"W
- Eastings/Northings: 247500, 342500
- OS Grid: SH475425
- Mapcode Local: GBR 5J.KLSN
- Mapcode Global: WH446.CX23
Location and coordinates are for the approximate centre of Afon Dwyfach within this administrative area.
Geographic features and populated places may cross administrative borders.