- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°22'1"N 3°55'12"W
- Eastings/Northings: 269363, 276087
- OS Grid: SN693760
- Mapcode Local: GBR 8Z.RX15
- Mapcode Global: VH4FN.0RFP
Location and coordinates are for the approximate centre of Cwm Magwr within this administrative area.
Geographic features and populated places may cross administrative borders.