- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°46'2"N 3°17'11"W
- Eastings/Northings: 313296, 319641
- OS Grid: SJ132196
- Mapcode Local: GBR 6T.YL55
- Mapcode Global: WH791.HP6T
Location and coordinates are for the approximate centre of Llyn Coed-y-llan within this administrative area.
Geographic features and populated places may cross administrative borders.