- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 53°8'17"N 4°3'2"W
- Eastings/Northings: 262921, 362072
- OS Grid: SH629620
- Mapcode Local: GBR 5T.66J1
- Mapcode Global: WH54N.RD93
Location and coordinates are for the approximate centre of Cwm Perfedd within this administrative area.
Geographic features and populated places may cross administrative borders.