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The site (Severn Estuary and Upper Severn Estuary) is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS). [ 22 ] Both SSSI citations provide detail of the geological and biological interest and of particular note is the international importance for wintering and wading birds of passage, [ 1 ] and of estuarine habits ...
The Severn Estuary and most of the embayments around the channel are less than 30 ft (9 m) deep. Within the channel, however, there is an east–west valley 65–100 ft (20–30 m) deep, which is thought to have been formed by fluvial run-off during Pleistocene phases of lower sea level. [ 15 ]
The Severn Estuary has one of the highest tidal ranges in the world, up to 48 ft (15 m), [34] [35] [36] second only to the Bay of Fundy in Eastern Canada. [ 37 ] [ 38 ] The estuary's funnel shape, its tidal range, and the underlying geology of rock, gravel and sand, produce strong tidal streams and high turbidity , giving the water a notably ...
Denny Island (Welsh: Ynys Denny; grid reference) is a small uninhabited rocky island of 0.24 hectares (0.6 acres), with scrub vegetation, in the Severn Estuary. Its rocky southern foreshore marks the boundary between England and Wales. Above high water mark, the island is reckoned administratively to Monmouthshire, South Wales.
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 ...
The tidal rise and fall in the Severn Estuary and Bristol Channel can be as great as 14.5 m (48 ft), [66] second only to Bay of Fundy in Eastern Canada. [67] [68] This tidal movement contributes to the deposition of natural mud in bays such as Weston. There has been concern about pollution levels from industrial areas in Wales and at the ...
The body of water was created in 1969 by inundating a 2,200-acre (890 ha) tract as part of the California State Water Project. [3] It serves as the intake point of the California Aqueduct for transport to Southern California, and feeds the Delta–Mendota Canal (a part of the Central Valley Project) to recharge San Joaquin Valley river systems. [4]
The Severn Barrage is any of a range of ideas for building a barrage from the English coast to the Welsh coast over the Severn tidal estuary. Ideas for damming or barraging the Severn estuary (and Bristol Channel) have existed since the 19th century. The building of such a barrage would constitute an engineering project comparable with some of ...