- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 53°10'16"N 3°58'19"W
- Eastings/Northings: 268279, 365618
- OS Grid: SH682656
- Mapcode Local: GBR 5X.47LS
- Mapcode Global: WH54H.YKP5
Location and coordinates are for the approximate centre of Cwm Bychan within this administrative area.
Geographic features and populated places may cross administrative borders.