- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°50'49"N 3°31'32"W
- Eastings/Northings: 297343, 328807
- OS Grid: SH973288
- Mapcode Local: GBR 6H.SN1Q
- Mapcode Global: WH67D.TP8S
Location and coordinates are for the approximate centre of Cwm Bychan within this administrative area.
Geographic features and populated places may cross administrative borders.