- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°6'18"N 3°30'9"W
- Eastings/Northings: 299500, 357500
- OS Grid: SH995575
- Mapcode Local: GBR 6J.8FMR
- Mapcode Global: WH668.56BT
Location and coordinates are for the approximate centre of Llyn Du within this administrative area.
Geographic features and populated places may cross administrative borders.