- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°24'14"N 4°3'3"W
- Eastings/Northings: 260568, 280439
- OS Grid: SN605804
- Mapcode Local: GBR 8T.PM6Z
- Mapcode Global: VH4FC.QTRW
Location and coordinates are for the approximate centre of Dyffryn Rheidol within this administrative area.
Geographic features and populated places may cross administrative borders.