- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°36'50"N 3°53'57"W
- Eastings/Northings: 271500, 303500
- OS Grid: SH715035
- Mapcode Local: GBR 90.8GKM
- Mapcode Global: WH578.2KGC
Location and coordinates are for the approximate centre of Nant Cwm-breichiau within this administrative area.
Geographic features and populated places may cross administrative borders.