- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 51°52'30"N 4°27'49"W
- Eastings/Northings: 230500, 222500
- OS Grid: SN305225
- Mapcode Local: GBR D7.S5GG
- Mapcode Global: VH3LD.L428
Location and coordinates are for the approximate centre of Afon Dewi Fawr within this administrative area.
Geographic features and populated places may cross administrative borders.