- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°37'10"N 3°46'24"W
- Eastings/Northings: 277322, 192698
- OS Grid: SS773926
- Mapcode Local: GBR H4.91LJ
- Mapcode Global: VH5GV.JKZ6
Location and coordinates are for the approximate centre of Cwm Bychan within this administrative area.
Geographic features and populated places may cross administrative borders.