- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°4'49"N 4°5'25"W
- Eastings/Northings: 260068, 355741
- OS Grid: SH600557
- Mapcode Local: GBR 5R.9WB1
- Mapcode Global: WH54V.4TDS
Location and coordinates are for the approximate centre of Llyn Du'r Arddu within this administrative area.
Geographic features and populated places may cross administrative borders.