West Sussex topographic maps

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Because of its elevation Beacon Hill, just to the east of Harting Down, hosted a station in the shutter telegraph chain, from 1796 to 1816, which connected the Admiralty in London to its naval ships in Portsmouth and Plymouth. This was replaced in 1822 by a semaphore station which operated on a slightly…

Average elevation: 101 m

Average elevation: 52 m

Blackdown, or Black Down, summit elevation 279.7 metres (918 ft) AMSL, is the highest point in both the historic county of Sussex and the South Downs National Park. It is one of the highest points in the south east of England, exceeded by Walbury Hill, Leith Hill and Pilot Hill. Blackdown is protected as part…

Average elevation: 165 m

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The South Downs National Park's chalk downland sets it apart from other national parks in Britain. However, almost a quarter (23%) of the national park consists of a quite different and strongly contrasting physiographic region, the western Weald, whose densely wooded hills and vales are based on an older…

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A study published by Princeton University and McGill University, in 2020, concluded that the Manhood Peninsula is at particularly high risk of flooding as its topography is less than 5 metres (16 ft) above the current mean sea level and that by 2100 Selsey will be subject to permanent inundation.

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