- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°19'47"N 3°40'1"W
- Eastings/Northings: 286500, 271500
- OS Grid: SN865715
- Mapcode Local: GBR 99.VCSZ
- Mapcode Global: VH5CF.DP8T
Location and coordinates are for the approximate centre of Nant Hirin within this administrative area.
Geographic features and populated places may cross administrative borders.