- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°58'6"N 3°53'11"W
- Eastings/Northings: 273411, 342888
- OS Grid: SH734428
- Mapcode Local: GBR 60.K4D6
- Mapcode Global: WH55J.8NL6
Location and coordinates are for the approximate centre of Llyn y Drum within this administrative area.
Geographic features and populated places may cross administrative borders.