- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°48'2"N 3°59'10"W
- Eastings/Northings: 266182, 324413
- OS Grid: SH661244
- Mapcode Local: GBR 5W.WQ3J
- Mapcode Global: WH567.QVXV
Location and coordinates are for the approximate centre of Llyn Dulyn within this administrative area.
Geographic features and populated places may cross administrative borders.