- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°57'11"N 3°30'57"W
- Eastings/Northings: 298255, 340603
- OS Grid: SH982406
- Mapcode Local: GBR 6H.KY6D
- Mapcode Global: WH670.Y1XD
Location and coordinates are for the approximate centre of Llyn Caer-Euni within this administrative area.
Geographic features and populated places may cross administrative borders.