- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°6'33"N 3°50'47"W
- Eastings/Northings: 276500, 358500
- OS Grid: SH765585
- Mapcode Local: GBR 62.82EM
- Mapcode Global: WH54Y.W3KM
Location and coordinates are for the approximate centre of Llyn Tynymynydd within this administrative area.
Geographic features and populated places may cross administrative borders.