River Clydach, Monmouthshire

Not to be confused with either the Lower Clydach River or Upper Clydach River which are tributaries of the River Tawe north of Swansea nor with the River Clydach (Neath), which is a right bank tributary of the River Neath nor the Nant Clydach in Clydach Vale.

The River Clydach is a short, steep and fast-flowing river in Monmouthshire and the county borough of Blaenau Gwent in south Wales. It lies within the Brecon Beacons National Park. It is around in length.