- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°55'45"N 3°51'12"W
- Eastings/Northings: 275500, 338500
- OS Grid: SH755385
- Mapcode Local: GBR 62.MDDM
- Mapcode Global: WH55Q.SM4L
Location and coordinates are for the approximate centre of Llyn Conglog-mawr within this administrative area.
Geographic features and populated places may cross administrative borders.