River Yala

Major Rivers in Vihiga

River Yala: An Invaluable Lifeline

Flowing for 219 km to its mouth at Yala Swamp, River Yala has its headwaters in Nandi Hills and drains the southern section of Uasin Gishu plateau. Flowing due west through Kakamega, Vihiga, Siaya, and Busia counties, it forms one of Kenya’s largest and ecologically rich wetland areas. Then, River Yala is one of five Kenyan rivers that drain into Lake Victoria, alongside Nzoia, Sondu, Nyando and Migori, contributing about 5% of the outflows into Lake Victoria. Along its course, River Yala forms the natural border between Kibiri and Kakamega Forests as it streams.

In Vihiga County, the Yala River flows across much of the northern border with Kakamega County, making it the unofficial boundary. River Yala and its tributaries in Kibiri Forest, which include Itsava Mwala, Lujesii (the Yordan), Malovi, Sirwa, Lurungula, Ishianda, Lunyu, Ishirongo, Malungu, Musanyi and Ijivir, are the major life lines in Vihiga, and the water is utilized for watering livestocks, domestic use, and small scale irrigation. It also supports subsistent farming in the region. River Yala terminates at Yala Swamp in Busia, where it debouches into Lake Victoria.

For conservation and tourism, the Yala River Nature Reserve within the southern section of the Kakamega Forest, covering an area of 535-hectares, was begun in 2001 with the primary aim of conserving it. The southern part of the Yala River Nature Reserve falls under Vihiga County (under Kibiri Forest Station) whose boundary runs along the Yala River, while the northern part of this little-known nature reserve lies inside Kakamega County (under Kakamega Reserve Station).

All in all River Yala is a crucial wetland that supports diverse flora and fauna, including endangered species such as the sitatunga antelope and various bird species. It’s also home to indigenous fish species, which are vital for local bio diversity and fishing communities. Though not as large as other rivers in Kenya, it has also been tapped for micro-hydro projects to support rural electrification.

Yet, as population as developments flourishes, Yala River faces challenges such as pollution from agricultural runoff, industrial waste, and encroachment on riparian areas. Conservation groups have been working with local communities to address these issues and promote sustainable use of the river and its surrounding gamut. The Yala Swamp, in particular, is a focal point for conservation efforts owing to its importance for regional biodiversity and its role as a buffer for Lake Victoria.


Kenya is blessed with several rivers, each playing a vital role in the country’s ecosystem, economy, and culture. The longest of these is the Tana, stretching approximately 1,000 kilometers from its source in the Aberdare Mountains to the Indian Ocean. Long, wide, short, seasonal, the rivers that crisscross Kenya each contributes to the natural beauty, biodiversity, and socio-economic success.


Typified by lush, green landscapes with rolling hills, rivers, waterfalls and forest, such as the much-noted Nganyi and Kaimosi Forests, which offer scenic spots for nature exploration and birdwatching, Vihiga County is famous for its agricultural productivity, especially tea and subsistence farming. Despite challenges related to population density it continues to thrive as a hotspot for farming and tourism.

You Are Here: River Yala

Where to Next?

Explore Destinations Nearby River Yala


What’s The Air Like In Vihiga?

Vihiga experiences a high equatorial climate with well distributed rainfall year-round. Temperatures range between 14ºC and 32ºC. 

Know More About Vihiga County…