The longest river in England is the River Severn, stretching approximately 220 miles (354 kilometers) from its source in the Cambrian Mountains of Wales to its mouth at the Bristol Channel. This river navigates through several towns and cities, including Shrewsbury and Worcester, and plays a vital role in drainage, transportation, and the ecology of the regions it traverses. Besides being the longest river, it is also noted for its tidal range, particularly at its estuary, which is one of the largest in the world, showcasing the diverse geological and biological significance of the River Severn.