Mount Kenya - Rivers

Rivers

Mount Kenya is the main water catchment area for two large rivers in Kenya; the Tana, the largest river in Kenya, and the Ewaso Ng'iso North. The Mount Kenya ecosystem provides water directly for over 2 million people. The rivers on Mount Kenya have been named after the villages on the slopes of the mountain that they flow close to. The Thuchi River is the district boundary between Meru and Embu. Mount Kenya is a major water tower for the Tana river which in 1988 supplied 80% of Kenya's electricity using a series of seven hydroelectric powerstations and dams.

The density of streams is very high, especially on the lower slopes which have never been glaciated. The ice cap which used to cover the mountain during the Pliocene eroded large U-shaped valleys which tend to only have one large stream. Where the original shape of the shield volcano is still preserved, there have been millions of years for streams to erode the hillside. This area is therefore characterised by frequent deep fluvial V-shaped valleys. The gradual transition from glaciated to fluvial valley can be clearly observed.

Rivers which start on Mount Kenya are the tributaries of two large Kenyan rivers: the Tana and the Ewaso Ng'iro rivers. A lot of Mount Kenyan rivers flow into the Sagana which itself is a tributary of the Tana, which it joins at the Masinga Reservoir. The rivers in the northern part of the mountain, such as the Burguret, Naro Moro, Nanyuki, Liki, Sirimon flow into the Ewaso Ng'iro. The rivers to the south-west, such as the Keringa and Nairobi flow into the Sagana and then into the Tana. The remaining rivers to the south and east, such as the Mutonga, Nithi, Thuchi and Nyamindi, flow directly into the Tana.

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