- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 53°2'41"N 4°9'17"W
- Eastings/Northings: 255632, 351901
- OS Grid: SH556519
- Mapcode Local: GBR 5N.DC4F
- Mapcode Global: WH550.4QPN
Location and coordinates are for the approximate centre of Cwm Marchnad within this administrative area.
Geographic features and populated places may cross administrative borders.