- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°41'36"N 3°54'10"W
- Eastings/Northings: 271494, 312346
- OS Grid: SH714123
- Mapcode Local: GBR 90.37PX
- Mapcode Global: WH56W.0KRG
Location and coordinates are for the approximate centre of Llyn Cau within this administrative area.
Geographic features and populated places may cross administrative borders.