- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°44'59"N 3°50'45"W
- Eastings/Northings: 275500, 318500
- OS Grid: SH755185
- Mapcode Local: GBR 62.ZVMP
- Mapcode Global: WH56P.W4RT
Location and coordinates are for the approximate centre of Afon Wnion within this administrative area.
Geographic features and populated places may cross administrative borders.