River Monnow

The River Monnow flows through south-west Herefordshire, England and eastern Monmouthshire, Wales. Border riverFor much of its length it marks the border between England and Wales before it joins the River Wye at Monmouth. The Wye is also half English from Monmouth until it meets the River Severn at Chepstow. The Monnow is bridged at Monmouth by the unique medieval Monnow Bridge. The Monnow Valley Walk follows the river. Black Mountains sourceThe river rises near Craswall on Cefn Hill just below the high Black Mountains, Wales. It flows southwards, gaining the waters of its tributaries the Escley Brook and Olchon Brook near Clodock and the waters of the River Honddu, from the Welsh side of the Black Mountains, near Pandy. The river then flows briefly eastwards, to Pontrilas, where it is joined by its largest tributary, the River Dore before again turning southwards. At Monmouth the river joins into the River Wye with the River Trothy. Its total length is around 42mi.

The River Monnow flows through south-west Herefordshire, England and eastern Monmouthshire, Wales. Border riverFor much of its length it marks the border between England and Wales before it joins the River Wye at Monmouth. The Wye is also half English from Monmouth until it meets the River Severn at Chepstow. The Monnow is bridged at Monmouth by the unique medieval Monnow Bridge. The Monnow Valley Walk follows the river. Black Mountains sourceThe river rises near Craswall on Cefn Hill just below the high Black Mountains, Wales. It flows southwards, gaining the waters of its tributaries the Escley Brook and Olchon Brook near Clodock and the waters of the River Honddu, from the Welsh side of the Black Mountains, near Pandy. The river then flows briefly eastwards, to Pontrilas, where it is joined by its largest tributary, the River Dore before again turning southwards. At Monmouth the river joins into the River Wye with the River Trothy. Its total length is around 42mi.