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・ Afolabi Olabimtan
・ Afolkey, Illinois
・ Afon Aber
・ Afon Alaw
・ Afon Alaw (ship, 1891)
・ Afon Alun
・ Afon Annell
・ Afon Brân
・ Afon Cadnant
・ Afon Cefni
・ Afon Cefni (ship, 1890)
・ Afon Cegin
・ Afon Cennen
・ Afon Clarach
・ Afon Clun
Afon Clywedog
・ Afon Col-huw
・ Afon Colwyn
・ Afon Crafnant
・ Afon Crai
・ Afon Crawnon
・ Afon Cwmnantcol
・ Afon Cych
・ Afon Cynrig
・ Afon Ddu
・ Afon Ddu (Drum)
・ Afon Dringarth
・ Afon Dulas
・ Afon Dulyn
・ Afon Dwyfor


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Afon Clywedog : ウィキペディア英語版
Afon Clywedog

The Afon Clywedog is a tributary of the River Severn approximately 29 km long which has its source on the flanks of Plynlimon and has its confluence with the Severn in Llanidloes. The annual rainfall over the catchment is between 1737 mm and 1836 mm.〔(54013 - Clywedog at Cribynau - CEH )〕
In 1979 the 90% flow was 5.266 m3/s and the 5% flow was 0.292 m3/s.〔
==River regulation==
A large part of the catchment of the river is the Clywedog reservoir which stores water from the catchment, especially during the winter months, and releases it during periods of low flow to support the flow in the Severn so that drinking water may be abstracted downstream.〔(Severn Trent Water - Llyn Clywedog )〕 The management rules also enable the reservoir to maintain the reservoir below maximum level during the winter so that there is capacity to absorb flood flows to reduce the impact of flooding further down the main river.〔(Hydrology in Practice. Shaw E )〕 The Afon Clywedog thus has a highly regulated flow with relatively high flow in dry conditions and reduced flow in wetter weather.

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「Afon Clywedog」の詳細全文を読む



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