- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°29'23"N 3°38'19"W
- Eastings/Northings: 288824, 289264
- OS Grid: SN888892
- Mapcode Local: GBR 9C.J6Q5
- Mapcode Global: VH5BN.WP43
Location and coordinates are for the approximate centre of Llyn Clywedog within this administrative area.
Geographic features and populated places may cross administrative borders.