- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°57'56"N 3°50'24"W
- Eastings/Northings: 276500, 342500
- OS Grid: SH765425
- Mapcode Local: GBR 62.K9LP
- Mapcode Global: WH55J.ZQGC
Location and coordinates are for the approximate centre of Llyn y Dywarchen within this administrative area.
Geographic features and populated places may cross administrative borders.