Monnow River

General data
- Water type: River
- Progression: River Wye -> Severn Estuary -> Bristol Channel -> Celtic Sea -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: Europe
- Countries: Wales (UK)
Description
The River Monnow marks the England–Wales border for much of its 68 km length. After flowing through southwest Herefordshire, England, and eastern Monmouthshire, Wales.