- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°18'30"N 4°17'24"W
- Eastings/Northings: 247500, 381500
- OS Grid: SH475815
- Mapcode Local: GBR HMSY.MJ6
- Mapcode Global: WH42N.238J
Location and coordinates are for the approximate centre of Llyn yr Wyth-Eidion within this administrative area.
Geographic features and populated places may cross administrative borders.