- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°58'50"N 3°59'26"W
- Eastings/Northings: 266453, 344442
- OS Grid: SH664444
- Mapcode Local: GBR 5W.J93N
- Mapcode Global: WH55G.NBXV
Location and coordinates are for the approximate centre of Llyn Stwlan within this administrative area.
Geographic features and populated places may cross administrative borders.