- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°54'35"N 3°18'9"W
- Eastings/Northings: 312500, 335500
- OS Grid: SJ125355
- Mapcode Local: GBR 6S.NN8J
- Mapcode Global: WH78G.74M3
Location and coordinates are for the approximate centre of Nant Rhydwilym within this administrative area.
Geographic features and populated places may cross administrative borders.