- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°10'48"N 3°56'45"W
- Eastings/Northings: 270048, 366556
- OS Grid: SH700665
- Mapcode Local: GBR 5Y.3MXY
- Mapcode Global: WH54J.CB5B
Location and coordinates are for the approximate centre of Llyn Dulyn within this administrative area.
Geographic features and populated places may cross administrative borders.