- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 51°52'47"N 3°41'37"W
- Eastings/Northings: 283500, 221500
- OS Grid: SN835215
- Mapcode Local: GBR Y8.RQF0
- Mapcode Global: VH5FQ.X0KQ
Location and coordinates are for the approximate centre of Llyn y Fan Fawr within this administrative area.
Geographic features and populated places may cross administrative borders.