- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°50'46"N 3°59'54"W
- Eastings/Northings: 265500, 329500
- OS Grid: SH655295
- Mapcode Local: GBR 5W.SM6D
- Mapcode Global: WH561.KQ4F
Location and coordinates are for the approximate centre of Llyn Du within this administrative area.
Geographic features and populated places may cross administrative borders.