- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°58'1"N 3°44'9"W
- Eastings/Northings: 283500, 342500
- OS Grid: SH835425
- Mapcode Local: GBR 66.K4Y3
- Mapcode Global: WH66Q.LP35
Location and coordinates are for the approximate centre of Afon Gelyn within this administrative area.
Geographic features and populated places may cross administrative borders.