- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°17'4"N 3°41'40"W
- Eastings/Northings: 284500, 266500
- OS Grid: SN845665
- Mapcode Local: GBR 98.YC01
- Mapcode Global: VH5CL.XV53
Location and coordinates are for the approximate centre of Hirnant Claerwen within this administrative area.
Geographic features and populated places may cross administrative borders.