- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°33'3"N 3°50'33"W
- Eastings/Northings: 275153, 296403
- OS Grid: SN751964
- Mapcode Local: GBR 92.DBJC
- Mapcode Global: VH4DX.B4VN
Location and coordinates are for the approximate centre of Cwm Rhaiadr within this administrative area.
Geographic features and populated places may cross administrative borders.