- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°0'1"N 3°54'58"W
- Eastings/Northings: 271500, 346500
- OS Grid: SH715465
- Mapcode Local: GBR 5Z.H34F
- Mapcode Global: WH559.TV97
Location and coordinates are for the approximate centre of Llyn Du-b within this administrative area.
Geographic features and populated places may cross administrative borders.