- Category: Water Feature
- Type: Other Water Feature
- Latitude/Longitude: 52°54'40"N 4°22'24"W
- Eastings/Northings: 240500, 337500
- OS Grid: SH405375
- Mapcode Local: GBR 5D.NL3M
- Mapcode Global: WH44J.S3M1
Location and coordinates are for the approximate centre of Afon Erch within this administrative area.
Geographic features and populated places may cross administrative borders.