Afon Mawddach
| Afon Mawddach River Mawddach | |
|---|---|
The Mawddach Estuary from above Barmouth | |
| Location | |
| Country | Wales |
| County | Gwynedd |
| Physical characteristics | |
| Source | |
| • location | Llanuwchllyn |
| Mouth | |
• location | Barmouth |
| Length | 28 mi (45 km) |
Afon Mawddach (Welsh for 'River Mawddach'; Welsh pronunciation: [ˈmaʊ̯ðaχ]) is a river in Gwynedd, Wales, which has its source in a wide area (SH820300) north of Dduallt in Snowdonia. Below Dolgellau it enters a wide estuary.