The Sirhowy River is a river located in Wales, flowing through the Sirhowy Valley. It is approximately 12 miles long and is a tributary of the River Ebbw. The river's source is near the village of Tredegar, and it flows southward, eventually joining the River Ebbw near Newport. The Sirhowy River has played an important role in the local economy, particularly during the Industrial Revolution. The surrounding area was known for its coal mining and ironworks, which relied on the river for transportation and water supply. Today, the river is a natural feature that supports local wildlife and offers recreational opportunities.