The River Weaver is a river located in Cheshire, England. It flows through the town of Northwich and eventually joins the River Mersey. The river is approximately 20 miles long and is known for its scenic beauty and historical significance, particularly in the salt industry. The River Weaver is also notable for its role in navigation. The Weaver Navigation, a man-made waterway, was constructed in the 18th century to facilitate the transport of goods. Today, the river is popular for recreational activities such as boating and fishing, attracting both locals and visitors.