- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°16'11"N 3°26'41"W
- Eastings/Northings: 301500, 264500
- OS Grid: SO015645
- Mapcode Local: GBR 9M.Z0J2
- Mapcode Global: VH69D.76PT
Location and coordinates are for the approximate centre of Llyn Gwyn within this administrative area.
Geographic features and populated places may cross administrative borders.