- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°17'18"N 3°19'41"W
- Eastings/Northings: 311560, 377643
- OS Grid: SJ115776
- Mapcode Local: GBR 5Z6D.8X
- Mapcode Global: WH76H.VLBX
Location and coordinates are for the approximate centre of Llyn Marl within this administrative area.
Geographic features and populated places may cross administrative borders.