- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°57'28"N 3°45'2"W
- Eastings/Northings: 282500, 341500
- OS Grid: SH825415
- Mapcode Local: GBR 66.KMDN
- Mapcode Global: WH66Q.CX77
Location and coordinates are for the approximate centre of Llyn Arenig Fach within this administrative area.
Geographic features and populated places may cross administrative borders.