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The Derwent is a river in Tasmania, Australia. The river rises in the state's Central Highlands and descends more than over , flowing through Hobart, the state's capital city, before emptying into Storm Bay and flowing into the Tasman Sea. The banks of the Derwent were once covered by forests and occupied by Tasmanian Aborigines. European settlers farmed the area and during the 20th century many dams were built on its tributaries for the generation of hydro-electricity. Agriculture, forestry, hydropower generation and fish hatcheries dominate catchment land use. The Derwent is also an important source of water for irrigation and water supply. Most of Hobart's water supply is taken from the lower Derwent River. Nearly 40% of Tasmania's population lives around the estuary's margins and the Derwent is widely used for recreation, boating, recreational fishing, marine transportation and industry.〔 ==Etymology== It was named after the River Derwent, Cumbria, by British Commodore John Hayes who explored it in 1793. The name is Brythonic Celtic for "valley thick with oaks".〔(Names of Rivers ) web.ukonline.co.uk〕〔(Celtic Place Names ) www.yorksj.ac.uk〕 John Hayes placed the name "Derwent River" only in the upper part of the river. Matthew Flinders placed the name on all of the river.〔Observations on the coasts of Van Diemen's Land, on Bass's Strait and its islands, and on parts of the coasts of New South Wales; intended to accompany the charts of the late discoveries in those countries. By Matthew Flinders, second lieutenant of His Majesty's Ship Reliance.published by John Nichols 1801 * page 5〕 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 Derwent (Tasmania)」の詳細全文を読む スポンサード リンク
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