- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 51°53'19"N 4°13'54"W
- Eastings/Northings: 246500, 223500
- OS Grid: SN465235
- Mapcode Local: GBR DK.R2YJ
- Mapcode Global: VH3LB.LSMC
Location and coordinates are for the approximate centre of Nant Penycnwc within this administrative area.
Geographic features and populated places may cross administrative borders.