The Government identified 59 flood-prone areas in Tana River County amid rising concerns over swelling water levels along the Tana River.
Tana Delta Sub-county accounts for the highest number of at-risk areas at 32, followed by Tana River Sub-county (10), Bangale (8), Tarasaa (6), and Tana North (3).
The mapping follows alerts over increased water discharge from the Seven Forks Dam, raising fears of downstream flooding.
Rising Death Toll
The situation reflects a wider national crisis, with 18 people confirmed dead due to floods as of May 2, 2026—most of them victims of drowning.
The Eastern Region has recorded the highest number of fatalities (9), followed by Central (3), Coast (2), Nairobi (2), and Rift Valley (2).
Nairobi, Central and Eastern Regions Hit Hard
In Nairobi, flooding has affected about 6,600 people, displacing families and damaging homes, schools, and roads across several sub-counties.
In the Central region, counties such as Kirinyaga County and Kiambu County have reported widespread destruction of infrastructure, including roads and bridges. In Mwea West alone, about 3,000 residents have been displaced.
Meanwhile, Makueni County has recorded the highest fatalities in Eastern Kenya, with flash floods and mudslides destroying homes and damaging roads and power lines.
Most Affected Areas in Tana Delta
Low-lying areas in Tana Delta Sub-county identified as highly vulnerable include Feji, Kiembe, Halubha, Sera, Bwoka, Tsanankuu, Godhey, Dobaley, Abaganda, Salama, Ndera, Wema, Galili, Chira, Bilisa, Shirikisho, Kipini, Miliki, Majaliwa, Onido, Ndiponi, Kau, Kilelengwani, Kalota, Pungaupepo, Kidhanga, Diribu, Magogoni B, Kajisten, Ndimimbii, Ribe A, and Ozi Mtangani.
Other affected areas include:
* Tana River Sub-county: Masabubu, Rhoka, Kinakomba-Boji, Emmaus, Watta Hamesa, Vukoni, Mkomani, Bondeni, Laza-Makaburini, Makere
* Bangale Sub-county: Bowa, Mbalambala, Mororo, Saka, Madogo, Tula, Ziwani, Bulto Banta
* Tana North Sub-county: Bura, Chewele, Hirimani
* Tarasaa Sub-county: Kipao, Ongonyo, Odole, Konemansa, Kigomo, Manono
Authorities have urged residents living along the Lower Tana River and other flood-prone regions—including Coast, Northeastern, Highlands, Rift Valley, and Nairobi—to remain on high alert and move to higher ground when advised.
The Government says multi-agency teams are on the ground monitoring the situation and coordinating response efforts.
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