- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°21'45"N 3°52'25"W
- Eastings/Northings: 272500, 275500
- OS Grid: SN725755
- Mapcode Local: GBR 91.S8VQ
- Mapcode Global: VH4FN.SWX4
Location and coordinates are for the approximate centre of Llyn Frongoch within this administrative area.
Geographic features and populated places may cross administrative borders.