- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°42'28"N 3°52'28"W
- Eastings/Northings: 273446, 313895
- OS Grid: SH734138
- Mapcode Local: GBR 91.2GN7
- Mapcode Global: WH56W.G65D
Location and coordinates are for the approximate centre of Llyn Arran within this administrative area.
Geographic features and populated places may cross administrative borders.