- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°9'15"N 4°21'24"W
- Eastings/Northings: 242500, 364500
- OS Grid: SH425645
- Mapcode Local: GBR 5D.5B3V
- Mapcode Global: WH436.1ZL7
Location and coordinates are for the approximate centre of Llyn Rhos-ddu within this administrative area.
Geographic features and populated places may cross administrative borders.