- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°5'9"N 3°36'23"W
- Eastings/Northings: 292500, 355500
- OS Grid: SH925555
- Mapcode Local: GBR 6D.9LFB
- Mapcode Global: WH666.KPVN
Location and coordinates are for the approximate centre of Nant Heilyn within this administrative area.
Geographic features and populated places may cross administrative borders.