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Havant Thicket Reservoir
Havant Thicket Reservoir is a reservoir currently (2022) under preliminary site preparation to the north of the town of Havant in Hampshire, England. The reservoir is a joint initiative between two water companies, Portsmouth Water and Southern Water and, when completed (expected to be 2029), will span 160 hectares with an anticipated capacity of 8.7 billion litres. It will supply an average of 21 million litres of water per day and allow Southern Water to reduce the volume it extracts from the rivers Test and Itchen. The site is bounded to the north by Havant Thicket, an area of forestry managed by Forestry England, to the east by Staunton Country Park and by the Leigh Park area of Havant to the south. It will straddle the border between the Borough of Havant and Chichester District. The site is underlain by clay, silt and sand of the London Clay Formation and, in small part, of the Lambeth Group. The current valley floor is characterised by head A head is the part of an orga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reservoir
A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including controlling a watercourse that drains an existing body of water, interrupting a watercourse to form an embayment within it, through excavation, or building any number of retaining walls or levees. In other contexts, "reservoirs" may refer to storage spaces for various fluids; they may hold liquids or gasses, including hydrocarbons. ''Tank reservoirs'' store these in ground-level, elevated, or buried tanks. Tank reservoirs for water are also called cisterns. Most underground reservoirs are used to store liquids, principally either water or petroleum. Types Dammed valleys Dammed reservoirs are artificial lakes created and controlled by a dam A dam is a barrier that stops or restricts the flow of surface water or underground streams ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borough Of Havant
The Borough of Havant is a local government district with borough status and as Havant and Waterloo an unparished area in Hampshire, England. Its council is based in Havant. Other places within the borough include Bedhampton, Cowplain, Emsworth, Hayling Island, Purbrook, Waterlooville and Widley. The borough covers much of the semi-urban area in the south east of Hampshire, between the city of Portsmouth and the West Sussex border. History The Havant and Waterloo urban district was reconstituted as a non-metropolitan district named just "Havant" by the Local Government Act 1972 on 1 April 1974. Havant Borough Council Elections to the borough council are held in three out of every four years, with one third of the 38 seats on the council being elected at each election. The Conservative party held a majority on the council from 1978 until they lost a majority in 1990. No party had a majority until the 2002 election when the Conservatives regained overall control. Since then t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Head (geology)
Head describes deposits consisting of fragmented material which, following weathering, have moved downslope through a process of solifluction. The term has been used by British geologists since the middle of the 19th century to describe such material in a range of different settings from flat hilltops to the bottoms of valleys. Areas identified as head include deposits of aeolian origin such as blown sand and loess, slope deposits such as gelifluctates and solifluctates, and recently eroded soil material, called colluvium. With geologists becoming more interested in studying the near-surface environment and its related processes, the term head is becoming obsolete. A related term is 'combe (or coombe) rock', descriptive of a body of chalk and flint fragments contained within a mass of chalky earth typically found on the chalk downland Downland, chalkland, chalk downs or just downs are areas of open chalk hills, such as the North Downs. This term is used to describe the chara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lambeth Group
The Lambeth Group is a stratigraphic group, a set of geological rock strata in the London and Hampshire Basins of southern England. It comprises a complex of vertically and laterally varying gravels, sands, silts and clays deposited between 56-55 million years before present during the Ypresian age (lower Eocene). It is found throughout the London Basin with a thickness between 10m and 30m and the Hampshire Basin with a thickness between 50m and less than 25m. Although this sequence only crops out in these basins, the fact that it underlies 25% of London at a depth of less than 30m means the formation is of engineering interest for tunnelling and foundations. History The formation was first known as the Plastic Clay by T. Webster in 1816 after the Argile plastique of Georges Cuvier and A. Brongniart. It was called the Mottled Clay by Joseph Prestwich in 1846, but in 1853 he proposed the name Woolwich-and-Reading Beds to emphasise the differing local aspects of the series. This na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Clay Formation
The London Clay Formation is a marine geological formation of Ypresian (early Eocene Epoch, c. 56–49 million years ago) age which crops out in the southeast of England. The London Clay is well known for its fossil content. The fossils from the lower Eocene rocks indicate a moderately warm climate, the tropical or subtropical flora. Though sea levels changed during the deposition of the clay, the habitat was generally a lush forest – perhaps like in Indonesia or East Africa today – bordering a warm, shallow ocean. The London Clay is a stiff bluish clay which becomes brown when weathered and oxidized. Nodular lumps of pyrite are frequently found in the clay layers. Pyrite was produced by microbial activity (sulfate reducing bacteria) during clay sedimentation. Once clay is exposed to atmospheric oxygen, framboidal pyrite with a great specific surface is rapidly oxidized. Pyrite oxidation produces insoluble brown iron oxyhydroxide (FeOOH) and sulfuric acid leading to the fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sand
Sand is a granular material composed of finely divided mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass. The composition of sand varies, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal settings is silica (silicon dioxide, or SiO2), usually in the form of quartz. Calcium carbonate is the second most common type of sand, for example, aragonite, which has mostly been created, over the past 500million years, by various forms of life, like coral and shellfish. For example, it is the primary form of sand apparent in areas where reefs have dominated the ecosystem for millions of years like the Caribbean. Somewhat more rarely, sand may be composed of calciu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silt
Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension with water. Silt usually has a floury feel when dry, and lacks plasticity when wet. Silt also can be felt by the tongue as granular when placed on the front teeth (even when mixed with clay particles). Silt is a common material, making up 45% of average modern mud. It is found in many river deltas and as wind-deposited accumulations, particularly in central Asia, north China, and North America. It is produced in both very hot climates (through such processes as collisions of quartz grains in dust storms) and very cold climates (through such processes as glacial grinding of quartz grains.) Loess is soil rich in silt which makes up some of the most fertile agricultural land on Earth. However, silt is very vulnerable to erosion, and it has poor mechanical properties, making construction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clay
Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4). Clays develop plasticity when wet, due to a molecular film of water surrounding the clay particles, but become hard, brittle and non–plastic upon drying or firing. Most pure clay minerals are white or light-coloured, but natural clays show a variety of colours from impurities, such as a reddish or brownish colour from small amounts of iron oxide. Clay is the oldest known ceramic material. Prehistoric humans discovered the useful properties of clay and used it for making pottery. Some of the earliest pottery shards have been dated to around 14,000 BC, and clay tablets were the first known writing medium. Clay is used in many modern industrial processes, such as paper making, cement production, and chemical filtering. Between one-half and two-thirds of the world's population live or work in buildings made with clay, often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chichester District
Chichester is a local government district in West Sussex, England. Its council is based in the city of Chichester and the district also covers a large rural area to the north. History The district was formed on 1 April 1974, under the Local Government Act 1972, as a merger of the municipal borough (city) of Chichester and the Rural Districts of Midhurst, Petworth and part of the former Chichester Rural District. Civil parishes There are 67 civil parishes in Chichester District. Apart from the City of Chichester, and the three towns of Midhurst, Selsey and Petworth, most are villages. Geography Chichester District occupies the western part of West Sussex, bordering on Hampshire to the west and Surrey to the north. The districts of Arun and Horsham abut to the east; the English Channel to the south. The district is divided by the South Downs escarpment, with the northern part being in the Weald, composed of a mixture of sandstone ridges and low-lying clays known as the Wes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staunton Country Park
Staunton Country Park is a listed Regency era, Regency landscaped parkland and forest encompassing approximately in Hampshire, England. An ornamental farm, ornamental lake, Folly, follies, maze, walled garden and greenhouse, glasshouses can be found within it. Entry to the parkland itself is free, however there is an associated visitor centre, with animals and attractions, which is not free. It is situated between Leigh Park and Rowlands Castle, near Havant. History The first gardens on the site were begun by William Garrett who purchased the land in 1802. In 1817 the park was sold to John Julius Angerstein but in 1819 the sale was reversed after Angerstein brought a case against Garrett over non disclosure of dry rot. Garrett then put the estate back on the market. The park was purchased in 1820 by English Regency, Regency politician and botanist Sir George Thomas Staunton as part of his country estate 'Leigh Park'. He made significant changes and additions to the gardens wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Havant
Havant ( ) is a town in the south-east corner of Hampshire, England between Portsmouth and Chichester. Its borough (population: 125,000) comprises the town (45,826) and its suburbs including the resort of Hayling Island as well as Rowland's Castle, the larger town of Waterlooville and Langstone Harbour. Housing and population more than doubled in the 20 years following World War II, a period of major conversion of land from agriculture and woodland to housing across the region following the incendiary bombing of Portsmouth and the Blitz. The old centre of the town was a small Celtic settlement before Roman times and the town's commerce, retired and commuter population swelled after World War II so as to be usually considered economically part of the Portsmouth conurbation. History Archeological digs in the 19th and 20th centuries uncovered evidence of Roman buildings – near St Faith's Church and in Langstone Avenue, along with neolithic and mesolithic remains. Havant was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forestry England
Forestry England is a division of the Forestry Commission, responsible for managing and promoting publicly owned forests in England. It was formed as Forest Enterprise in 1996, before devolving to Forest Enterprise England on 31 March 2003 and then being rebranded to Forestry England on 1 April 2019. Its mission is to connect everyone with the nation’s forests by creating and caring for our forests for people to enjoy, wildlife to flourish and businesses to grow. It operates under the Forestry Act(s) and subsequent legislation and is part of the Civil Service and an Executive Agency of the Forestry Commission. Operation Forestry England is headquartered in Bristol, and for organisational purposes it divides England into six forest regions each with their own regional office: *North England, based in Bellingham, Northumberland near Hexham. *Yorkshire, based in Pickering, North Yorkshire. *Central England, based in Mansfield, Nottinghamshire. *West England, based in Coleford, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
