- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 53°1'13"N 3°56'59"W
- Eastings/Northings: 269304, 348788
- OS Grid: SH693487
- Mapcode Local: GBR 5Y.FLZJ
- Mapcode Global: WH559.9BBV
Location and coordinates are for the approximate centre of Llyn Dyrnogydd within this administrative area.
Geographic features and populated places may cross administrative borders.