- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°4'47"N 3°41'53"W
- Eastings/Northings: 283720, 243765
- OS Grid: SN837437
- Mapcode Local: GBR Y8.C39D
- Mapcode Global: VH5DK.VZ7C
Location and coordinates are for the approximate centre of Cwm-Bychan within this administrative area.
Geographic features and populated places may cross administrative borders.