- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 51°53'31"N 3°26'50"W
- Eastings/Northings: 300500, 222500
- OS Grid: SO005225
- Mapcode Local: GBR YL.QZHB
- Mapcode Global: VH6C4.6PDV
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.