- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°4'47"N 3°59'39"W
- Eastings/Northings: 266500, 355500
- OS Grid: SH665555
- Mapcode Local: GBR 5W.9VJN
- Mapcode Global: WH54W.MV35
Location and coordinates are for the approximate centre of Nant-y-llys within this administrative area.
Geographic features and populated places may cross administrative borders.