The longest river in Great Britain is the River Severn. It stretches for approximately 220 miles (354 kilometers) as it flows from its source in the Cambrian Mountains of Wales, winding its way through several counties, including Shropshire, Worcestershire, and Gloucestershire, before finally emptying into the Bristol Channel.
The River Severn is not only significant for its length but also plays an important role in the geography and ecology of the region. It supports diverse wildlife and is pivotal for various local communities, providing water for drinking, agriculture, and industry.
Additionally, the river is renowned for its tidal bore, a natural phenomenon that attracts many visitors. This occurs when the rising tide flows up the river against the current, creating a wave that can be quite dramatic. Overall, the River Severn is an iconic feature of Great Britain, symbolizing both natural beauty and historical significance.