- Category: Water Feature
- Type: Inland Water
- Latitude/Longitude: 52°18'32"N 3°32'41"W
- Eastings/Northings: 294768, 269000
- OS Grid: SN947690
- Mapcode Local: GBR 9G.WRVR
- Mapcode Global: VH5CP.H7S8
Location and coordinates are for the approximate centre of Gwynllyn within this administrative area.
Geographic features and populated places may cross administrative borders.