- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°4'45"N 4°4'8"W
- Eastings/Northings: 261512, 355565
- OS Grid: SH615555
- Mapcode Local: GBR 5S.B22B
- Mapcode Global: WH54V.GVNQ
Location and coordinates are for the approximate centre of Llyn Bâch within this administrative area.
Geographic features and populated places may cross administrative borders.