- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 51°53'15"N 3°27'6"W
- Eastings/Northings: 300184, 222006
- OS Grid: SO001220
- Mapcode Local: GBR YL.RBFJ
- Mapcode Global: VH6C4.4T1B
Location and coordinates are for the approximate centre of Llyn Cwm Llwch within this administrative area.
Geographic features and populated places may cross administrative borders.