- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°9'18"N 3°37'15"W
- Eastings/Northings: 289198, 251995
- OS Grid: SN891519
- Mapcode Local: GBR YC.6BG5
- Mapcode Global: VH5DF.6317
Location and coordinates are for the approximate centre of Llyn Cwmannell within this administrative area.
Geographic features and populated places may cross administrative borders.