- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°9'53"N 4°22'38"W
- Eastings/Northings: 237500, 254500
- OS Grid: SN375545
- Mapcode Local: GBR DC.5NXF
- Mapcode Global: VH3JX.2VRB
Location and coordinates are for the approximate centre of Afon Ffynnon-Ddewi within this administrative area.
Geographic features and populated places may cross administrative borders.