- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°5'44"N 4°7'46"W
- Eastings/Northings: 257500, 357500
- OS Grid: SH575575
- Mapcode Local: GBR 5P.8Z7Q
- Mapcode Global: WH54T.JGR5
Location and coordinates are for the approximate centre of Llyn Dwythwch within this administrative area.
Geographic features and populated places may cross administrative borders.