- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°18'16"N 4°29'6"W
- Eastings/Northings: 234500, 381500
- OS Grid: SH345815
- Mapcode Local: GBR HM9Z.27Z
- Mapcode Global: WH42K.26GJ
Location and coordinates are for the approximate centre of Llyn Llywenan within this administrative area.
Geographic features and populated places may cross administrative borders.