- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°23'2"N 3°25'13"W
- Eastings/Northings: 303422, 277173
- OS Grid: SO034771
- Mapcode Local: GBR 9N.QSN6
- Mapcode Global: VH68T.NBMS
Location and coordinates are for the approximate centre of Cwm Defaid within this administrative area.
Geographic features and populated places may cross administrative borders.