River Clwyd

River Clwyd (Afon Clwyd)
River
River Clwyd by Rhuddlan Castle, Moel Famau in distance
Country	Wales
Region	Denbighshire
Source
- location	Clocaenog Forest
Mouth
- location	Liverpool Bay near Rhyl, Wales

The River Clwyd (Welsh: Afon Clwyd) is a river in Wales that rises in the Clocaenog Forest (grid reference SJ045535) 5 mi (8.0 km) northwest of Corwen.

It flows due south until, at Melin-y-Wig, it veers north-eastwards, tracking the A494 and passing through Derwen, Llanelidan, Pwllglas and Llanfair Dyffryn Clwyd to Ruthin. Here it leaves the relatively narrow valley and enters a broad agricultural vale, the Vale of Clwyd (Welsh: Dyffryn Clwyd). Just south of Denbigh, it is joined by the River Clywedog. This substantial tributary also has its source in the Clocaenog Forest but drains out to the east and north of the forest and passes through Cyffylliog, Bontuchel and Rhewl before its confluence with the main river.

Then the Clwyd meanders northwards through the fertile Clwyd valley to St Asaph. Two miles north of St Asaph, the river is joined by a tributary as large as the main river, the River Elwy. In normal flows at low tide, the waters of these two rivers can be seen flowing side by side down the river with little mixing.