- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 53°2'53"N 4°15'41"W
- Eastings/Northings: 248500, 352500
- OS Grid: SH485525
- Mapcode Local: GBR 5J.CWW0
- Mapcode Global: WH43T.HNX0
Location and coordinates are for the approximate centre of Afon Llyfni within this administrative area.
Geographic features and populated places may cross administrative borders.