- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°59'46"N 3°54'31"W
- Eastings/Northings: 271987, 346018
- OS Grid: SH719460
- Mapcode Local: GBR 5Z.HBZ1
- Mapcode Global: WH559.XYTF
Location and coordinates are for the approximate centre of Llyn Du-bâch within this administrative area.
Geographic features and populated places may cross administrative borders.