- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 51°50'48"N 3°28'29"W
- Eastings/Northings: 298500, 217500
- OS Grid: SN985175
- Mapcode Local: GBR YK.TYHT
- Mapcode Global: VH5FV.QVB2
Location and coordinates are for the approximate centre of Nant yr Eira within this administrative area.
Geographic features and populated places may cross administrative borders.