- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°20'58"N 3°32'8"W
- Eastings/Northings: 295500, 273500
- OS Grid: SN955735
- Mapcode Local: GBR 9H.T24X
- Mapcode Global: VH5CH.N6QN
Location and coordinates are for the approximate centre of Marcheini Fawr within this administrative area.
Geographic features and populated places may cross administrative borders.