- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°45'33"N 3°43'31"W
- Eastings/Northings: 283660, 319367
- OS Grid: SH836193
- Mapcode Local: GBR 67.Z7HK
- Mapcode Global: WH67P.RX51
Location and coordinates are for the approximate centre of Llyn y Fign within this administrative area.
Geographic features and populated places may cross administrative borders.