- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°51'26"N 3°51'55"W
- Eastings/Northings: 274500, 330500
- OS Grid: SH745305
- Mapcode Local: GBR 61.S3HK
- Mapcode Global: WH563.LFKV
Location and coordinates are for the approximate centre of Nant y Graean within this administrative area.
Geographic features and populated places may cross administrative borders.