- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°40'57"N 3°50'39"W
- Eastings/Northings: 275415, 311045
- OS Grid: SH754110
- Mapcode Local: GBR 92.443N
- Mapcode Global: WH56W.XTHR
Location and coordinates are for the approximate centre of Cwm Bychan within this administrative area.
Geographic features and populated places may cross administrative borders.