- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°18'37"N 3°46'8"W
- Eastings/Northings: 279500, 269500
- OS Grid: SN795695
- Mapcode Local: GBR 95.WJPW
- Mapcode Global: VH5CK.M6C6
Location and coordinates are for the approximate centre of Llyn Du within this administrative area.
Geographic features and populated places may cross administrative borders.