- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°22'9"N 3°46'20"W
- Eastings/Northings: 279421, 276054
- OS Grid: SN794760
- Mapcode Local: GBR 95.RXGN
- Mapcode Global: VH5C5.KQH4
Location and coordinates are for the approximate centre of Cwm Perfedd within this administrative area.
Geographic features and populated places may cross administrative borders.