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The Severn Estuary (Welsh: Aber Hafren) is the estuary of the River Severn, flowing into the Bristol Channel between South West England (from North Somerset, Bristol and South Gloucestershire) and South Wales (from Cardiff, Newport to Monmouthshire).
In the Severn Estuary (or the Bristol Channel in the last two cases, depending where the boundary is drawn) are the rocky islands called Denny Island, Steep Holm and Flat Holm. The estuary is about 2 miles (3 km) wide at Aust, and about 9 miles (14 km) wide between Cardiff and Weston-super-Mare.
May 14, 2024 · River Severn, Britain’s longest river from source to tidal waters—about 180 miles (290 km) long, with the Severn estuary adding some 40 miles (64 km) to its total length. The Severn rises near the River Wye on the northeastern slopes of Plynlimon (Welsh: Pumlumon), Wales , and follows a semicircular course basically southward to the Bristol ...
- The Editors of Encyclopaedia Britannica
Not only is it Britain’s second largest estuary, but it also boasts the highest tidal range in Europe (up to 14.5m) with a tidal regime which causes strong tidal streams, mobile sediments and the famous Severn Bore.
Its rich coastal archaeological heritage boasts amongst the greatest in Britain, so be sure to keep your eye out for evidence of the past. These guides provide iconic and beautiful spots on the Severn Estuary for you to visit and explore.
The Severn bore is a tidal bore seen on the tidal reaches of the River Severn in south western England. It is formed when the rising tide moves into the funnel-shaped Bristol Channel and Severn Estuary and the surging water forces its way upstream in a series of waves, as far as Gloucester and beyond.
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With the largest tidal range in Europe, a vast array of wildlife, rich cultural heritage and a wild and beautiful landscape, the Severn Estuary is one of the UK’s great natural wonders and a globally important site for nature.
