- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°3'8"N 4°2'16"W
- Eastings/Northings: 263500, 352500
- OS Grid: SH635525
- Mapcode Local: GBR 5T.CPMH
- Mapcode Global: WH551.YJCX
Location and coordinates are for the approximate centre of Afon Merch within this administrative area.
Geographic features and populated places may cross administrative borders.