- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°55'10"N 4°0'5"W
- Eastings/Northings: 265527, 337659
- OS Grid: SH655376
- Mapcode Local: GBR 5W.N0FT
- Mapcode Global: WH55N.HWQ6
Location and coordinates are for the approximate centre of Llyn Llenyrch within this administrative area.
Geographic features and populated places may cross administrative borders.