- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°1'17"N 4°14'42"W
- Eastings/Northings: 249500, 349500
- OS Grid: SH495495
- Mapcode Local: GBR 5K.FM72
- Mapcode Global: WH440.R9NY
Location and coordinates are for the approximate centre of Llyn Cwm Dulyn within this administrative area.
Geographic features and populated places may cross administrative borders.