| Afon Rheidol | |
|---|---|
 The Rheidol near Capel Bangor in spring | |
 | |
| Location | |
| Country | Wales |
| Region | Ceredigion |
| Physical characteristics | |
| Source | Nant-y-moch Reservoir, Ceredigion, Wales |
| Mouth | Cardigan Bay |
• location | Aberystwyth, Ceredigion |
| Length | 19 mi (31 km) |
Afon Rheidol (Welsh pronunciation: [ˈr̥ei̯dɔl]; also known as the River Rheidol) is a river in Ceredigion, Wales, 19 miles (31 km) in length. The source is Plynlimon. Receiving an average annual rainfall of 40 inches (1.02 m), Plynlimon is also the source of both the Wye and the Severn.[1]
- ^ "School of Biosciences". Cardiff University.