River Severn

The longest river in Great Britain, flowing from the Cambrian Mountains through Wales and western England to the Bristol Channel.

Severn Estuary: The tidal estuary where the River Severn meets the Bristol Channel. The river widens into this estuary at its mouth.
Severn Navigation: The system of waterways, locks, and channels used for navigation on the River Severn. Navigation works made parts of the river usable for commercial transport.
Plynlimon: A mountain massif in mid-Wales containing the source of the River Severn. The Severn begins on the slopes of this upland.
Great Flood of 1947: A major British flood caused by heavy rain and rapid snowmelt in March 1947. The Severn was among the rivers that flooded extensively during this event.
Severn Bore: A tidal wave that travels upstream from the Severn Estuary along the River Severn. A rising tide funnels into the river and forms this wave.
Severn Tunnel: A railway tunnel beneath the Severn Estuary linking South Gloucestershire and Monmouthshire. It carries a major transport route beneath the river’s tidal mouth.
Welsh Marches: The borderlands between Wales and England, with a history of shifting political boundaries. The river crosses this border region on its way east and south.
Severn Crossing: The road bridges crossing the Severn Estuary between England and Wales. These crossings transformed travel between the river’s two shores.
River basin: An area of land drained by a river and its tributaries. The Severn’s flow gathers water from a broad drainage area.
Ironbridge Gorge: A gorge on the Severn in Shropshire, central to the early Industrial Revolution. The river powered and transported materials for industries concentrated in the gorge.

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