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The Akanyaru River is the main tributary of the Nyabarongo River. It rises in the western highlands of Rwanda and Burundi, flows east and then north along the border between those countries before joining the Nyabarongo River. The lower stretches contain important but unprotected wetlands, which are under threat from human activity. ==Course== The Mugere River, a major headwater, rises at an elevation of in Burundi. The river has sources at about elevation in the south of Rwanda. Many of the valleys of the higher tributaries are choked by papyrus, which contains seasonal swamp forests. The upstream portion of the river has a catchment area of about . The lower course of the river is a belt of permanent wetlands about wide that ends where it reaches the Nyabarongo River. In this stretch the river drops from an elevation of to . The swamp belt is fed from the right by lakes Cyohoha North and Cyohoha South. The Burundi side of the swamp belt has about of permanent swamp along a stretch of the river, with the swamp reaching up the valleys of tributaries. 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「Akanyaru River」の詳細全文を読む スポンサード リンク
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