- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 51°55'13"N 3°38'18"W
- Eastings/Northings: 287409, 225937
- OS Grid: SN874259
- Mapcode Local: GBR YC.P04B
- Mapcode Global: VH5FC.WZ8M
Location and coordinates are for the approximate centre of Llyn Traeth-bach within this administrative area.
Geographic features and populated places may cross administrative borders.