Afon Merddwr
| Afon Merddwr | |
|---|---|
Afon Merddwr at Pentrefoelas | |
| Etymology | Welsh for stagnant water |
| Location | |
| Country | Wales |
| Counties | Gwynedd |
| Physical characteristics | |
| Source | |
| • location | Mwdwl-eithin |
| • coordinates | 53°03′40″N 3°37′16″W / 53.061°N 3.621°W |
| Mouth | |
• location | River Conwy |
• coordinates | 53°02′42″N 3°42′25″W / 53.045°N 3.707°W |
| Length | 16 km (9.9 mi) |
Afon Merddwr is a river in the south of the county of Conwy, Wales. It is a tributary of the River Conwy and joins it near Pentrefoelas. It is about 10 km long. "Merddwr" is Welsh for backwater or stagnant water, suggesting that it was named for its current or water quality.