- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°39'17"N 3°34'33"W
- Eastings/Northings: 293500, 307500
- OS Grid: SH935075
- Mapcode Local: GBR 9F.5XYZ
- Mapcode Global: WH68C.1JHN
Location and coordinates are for the approximate centre of Llyn Gwyddior within this administrative area.
Geographic features and populated places may cross administrative borders.