- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°52'20"N 4°2'39"W
- Eastings/Northings: 262500, 332500
- OS Grid: SH625325
- Mapcode Local: GBR 5T.R21L
- Mapcode Global: WH560.V299
Location and coordinates are for the approximate centre of Llyn y Fedw within this administrative area.
Geographic features and populated places may cross administrative borders.