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The Southern Ewaso Ng'iro (Brown River) is a river in the Great Rift Valley in Kenya (Africa). It plays an important role in the ecology of Lake Natron, the main regular breeding site for near-threatened lesser flamingos. Changes to land use in the river's headwaters or in the marshes before the river enters the lake could have a serious impact on this species.〔〔 ==Course== The Ewaso Ng'iro rises on the Mau Escarpment, where it drains the south part of the Mau Forest.〔 The forest, which plays an important role in regulating and filtering the inflow to the river, is under threat from logging and land clearance for farming. Destruction would increase sediment loads in the river and cause greater seasonal variance in the volume of water. The river flows south through the rift valley to the east of the Nguruman Escarpment. It crosses the border into Tanzania, where it empties into Lake Natron. The river, which runs all year round, is the main inflow to the lake.〔 The river once flowed directly into the lake, but in geologically recent times it has been dammed by a horst beside the Shompole volcano. This has caused the waters to spread out into the steadily expanding Engare Ng'iro swamp, where the river deposits its sediment. The sediment-free river water then seeps into the brine lake. The permanent swamp covers about . South of this a seasonal floodplain of about stretches down to lake Natron and along its eastern shore. 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「Southern Ewaso Ng'iro」の詳細全文を読む スポンサード リンク
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