- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°26'47"N 3°45'45"W
- Eastings/Northings: 280310, 284634
- OS Grid: SN803846
- Mapcode Local: GBR 96.LSCG
- Mapcode Global: VH5BS.QRSW
Location and coordinates are for the approximate centre of Llyn y Fawnog within this administrative area.
Geographic features and populated places may cross administrative borders.