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The Kennet is a river in the south of England, and a tributary of the River Thames. The lower reaches of the river are navigable to river craft and are known as the Kennet Navigation, which, together with the Avon Navigation, the Kennet and Avon Canal and the Thames, links the cities of Bristol and London. The former local government district of Kennet in Wiltshire was named after it. The River Kennet has been assigned as a Site of Special Scientific Interest (SSSI) from near its sources west of Marlborough down to Woolhampton. This is primarily because it has an extensive range of rare plants and animals that are unique to chalk watercourses.〔 (【引用サイトリンク】format=PDF )〕 ==Course== One of the Kennet's sources is Swallowhead Spring near Silbury Hill in Wiltshire, the other being a collection of tributaries north of Avebury near the rural settlements of Uffcott and Broad Hinton which flow south past Avebury and join up with the waters from Swallowhead Springs. In these early stages it passes close by many prehistoric sites including Avebury Henge, West Kennet Long Barrow and Silbury Hill. The land drained by upper reaches has a low water table owing to its position in the North Wessex Downs which is mostly chalk as the upper subsoil, as such many of these stretches are depending on precipitation and surrounding soil type winterbournes. From there the river flows through Marlborough, Hungerford and Newbury before flowing into the Thames on the reach above Sonning Lock at Reading in Berkshire. The upper reaches of the River Kennet are served by two tributaries. The River Og which flows into the Kennet at Marlborough and the River Dun which enters at Hungerford. The Kennet's principal tributaries below Marlborough are the River Lambourn, the River Enborne and the Foudry Brook. For six miles (10 km) to the west of, and through, Reading, the Kennet supports a secondary channel (corollary), the Holy Brook, which formerly powered the water mills of Reading Abbey. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「River Kennet」の詳細全文を読む スポンサード リンク
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