The Tana is the longest river wholly within Kenya. The country is also one of the 11 countries sharing the waters of the Nile River. Kenya’s extensive highlands provide catchment areas for the country’s abundant rivers. The country’s rivers are of great ecological value to the rich flora and fauna they support along their course.
The River Tana stretches for 621 miles from the Aberdare Mountains to the Indian Ocean. The River Delta supports a range of habitats as it winds its way to the ocean such as mangroves, palm savanna, grasslands, forest patches and sand dunes. Since ancient times, the river has been significant for fishing and as a water source while developments in the modern era have enabled irrigation, hydro-electric power tapping, and small-scale navigation. The river provides a habitat for abundant water bird species such as ibises, egrets, geese. The endangered Malindi Pipit and Basra Reed-warbler bird species have been observed in the river’s habitats. The river is a critical component of the larger Tana Delta and supports fauna such as crocodiles, hippopotamus, monkeys, and turtles. The river is severely threatened by agricultural projects, deforestation which continues to cause sedimentation in the river and development of tourism infrastructure. The river is inadequately protected against these threats and conservation is done on a small scale such as in the Tana River Primate Reserve.
From its source waters in Mount Kenya, the Ewaso Ng’iro River stretches for 435 miles and eventually joins the Jubba River in Somalia. The banks of the river support a broad range of wildlife including the elephant, buffalo, rhinos, cheetahs, leopards and Zebras. Protection areas such as the Lewa Conservancy and Samburu Game Reserve, both in Isiolo were founded to protect the vulnerable wildlife. The river has, however, been affected by degradation of its catchment areas. Recent drought periods have taken their toll on the water amount of the river. Proposed developmental projects have also raised environmental concerns over the sustainability of the river’s ecosystem. The river has also taken center stage in tribal disputes, especially among communities which inhabit the regions of Samburu and Isiolo.
The Athi-Galana-Sabaki is one of the most significant rivers in Kenya at a length of 242 miles. The river begins as Athi River at the mouth and drains into the Indian Ocean as Galana River, otherwise known as Sabaki River. The river has been significant through history for local communities through fishing. The river supports abundant fish species, most of them in the Cyprinidae and Aplocheilidae Families. Pollution in the river is, however, threatening fish in the river. An alarming number of fish species from the river has been found to have heavy metals in them. The river is protected at various points, such as in the Tsavo East and Nairobi National Parks. Various fauna including hippopotamus, pythons, crocodiles and water birds inhabit the river’s ecosystem.
MaraThe Mara River flows for 245 miles from the Mau Escarpment and drains into Lake Victoria, stretching through both Kenya and Tanzania. The river is economically important to local communities through small-scale agriculture and herding of the Maasai tribe. The river flows through the Maasai Mara Game Reserve in Kenya and provides an ecosystem for animals such as giraffes, elephants, wildebeests, and cheetahs. Several threats to the river have been identified, and they include degradation of catchment areas, large-scale irrigation projects, over-grazing and water pollution. These concerns continue to be addressed by the Ministry of Environment, Water and Natural Resource in the country.
Other Major Rivers and Environmental Concerns
The largest river to pass into Kenya, the Nile River, stretches through a total of 4,258 miles in 11 countries. Some of the other major rivers in the country are the Dawa at 280 miles and shared with Somalia, the Turkwel at 211 miles and shared with Uganda, and the Nzoia River at 160 miles. Kenya’s rivers play an important economic and ecological role, and concerns such as pollution and deforestation need to be adequately addressed to ensure the rivers’ sustainability.
|Rank||Longest Rivers in Kenya||Total Length|
|1||Nile||4,258 miles (shared with 10 other countries)|
|3||Ewaso Ng'iro||435 miles|
|4||Dawa||280 miles (shared with Ethiopia and Somalia)|
|5||Mara||245 miles (shared with Tanzania)|
|7||Turkwel||211 miles (shared with Uganda)|
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