Other places · South East England
Severn bore
Also known as: Eger Hafren
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 Estuar
Derek Meek — CC BY-SA 2.0 via Wikimedia Commons licence
Plan your visit
- Typical visit
- 1 h–2 h
About
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. The bore behaves differently in different stretches of the river; in the lower, wider parts it is more noticeable in the deep channels as a slight roller, while the water creeps across the sand and mudflats. In the narrower, upper reaches, the river occupies the whole area between its banks and the bore advances in a series of waves that move upstream. Near Gloucester, the advancing water overcomes two weirs, and sometimes one in Tewkesbury, before finally petering out. Bores are present on about 130 days in the year, concentrated on the days immediately following the new and full moon. The size and precise timing of the bore depend on such things as the time of high tide, the barometric pressure, the wind speed and direction, the amount of water coming down the river and how well scoured the main drainage channels are. There are a number of viewpoints from which the bore can be seen, or viewers can walk along the river bank or floodbanks. Historically, the bore has been of importance to shipping visiting the docks at Gloucester, but this was alleviated by the construction of an alternative route, the Gloucester and Sharpness Canal, which opened in 1827. Nowadays the bore is of…
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From the Wikipedia article
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. The bore behaves differently in different stretches of the river; in the lower, wider parts it is more noticeable in the deep channels as a slight roller, while the water creeps across the sand and mudflats. In the narrower, upper reaches, the river occupies the whole area between its banks and the bore advances in a series of waves that move upstream. Near Gloucester, the advancing water overcomes two weirs, and sometimes one in Tewkesbury, before finally petering out. Bores are present on about 130 days in the year, concentrated on the days immediately following the new and full moon. The size and precise timing of the bore depend on such things as the time of high tide, the barometric pressure, the wind speed and direction, the amount of water coming down the river and how well scoured the main drainage channels are. There are a number of viewpoints from which the bore can be seen, or viewers can walk along the river bank or floodbanks. Historically, the bore has been of importance to shipping visiting the docks at Gloucester, but this was alleviated by the construction of an alternative route, the Gloucester and Sharpness Canal, which opened in 1827. Nowadays the bore is of interest to surfers and canoeists who attempt to ride the waves.
Excerpt from Wikipedia under CC BY-SA 4.0. See the source article linked in Sources below.
Background
History
An eighteenth century account of the bore that has been attributed to Charles Blagden (died 1820), secretary of the Royal Society, is in the collection of the Gloucestershire Archives under reference Glos. R.O., D 1914. In the account, the author described it rising to eight feet and how he rode on horseback between bends in the river in order to "overtake" the bore as observers still attempt to do. The phenomenon is referred to as a "head of tide" with the author noting at the end that elsewhere such things are known as a "boar" or "bore".
Sourced from Wikipedia under CC BY-SA 4.0.
- Coordinates
- 51.8500, -2.3320
- County
- Gloucestershire
- District
- Stroud
- Parish
- Elmore
- Postcode
- GL2 3ST
- Parliamentary constituency
- North Cotswolds
Sources
- wikipedia: Severn bore (CC BY-SA 4.0)
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Frequently asked questions
- Where is Severn bore?
- Severn bore is in South East England, in the United Kingdom — coordinates 51.8500°, -2.3320°.