- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 53°3'3"N 4°2'25"W
- Eastings/Northings: 263335, 352346
- OS Grid: SH633523
- Mapcode Local: GBR 5T.CWHR
- Mapcode Global: WH551.XK6Z
Location and coordinates are for the approximate centre of Cwm Merch within this administrative area.
Geographic features and populated places may cross administrative borders.