- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°6'55"N 4°1'33"W
- Eastings/Northings: 264500, 359500
- OS Grid: SH645595
- Mapcode Local: GBR 5V.7LJ9
- Mapcode Global: WH54P.4Y4J
Location and coordinates are for the approximate centre of Llyn Idwal within this administrative area.
Geographic features and populated places may cross administrative borders.