- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°6'59"N 3°51'58"W
- Eastings/Northings: 275184, 359322
- OS Grid: SH751593
- Mapcode Local: GBR 61.7P9C
- Mapcode Global: WH54R.LX2S
Location and coordinates are for the approximate centre of Llyn Bychan within this administrative area.
Geographic features and populated places may cross administrative borders.