County officials have charted 246 locations vulnerable to flooding as the short‑rains season approaches, focusing on drainage clearing and evacuation‑centre preparation.

The Kenya Meteorological Department forecasts above‑average, wetter‑than‑normal rainfall for October to December, raising concerns for low‑lying districts and informal settlements.

The mapping exercise was a joint effort by the National Disaster Operations Centre, Kenya Red Cross and Nairobi County Disaster Management officials.

Key neighbourhoods flagged for close monitoring include Mukuru, the Industrial Area corridor (Pipeline, Imara Daima, Kware), Gatina, Waruku, parts of Waithaka, estates around Nairobi Dam, Lang’ata and Kibra.

Major thoroughfares such as Uhuru Highway, Jogoo Road, Kangundo Road and Thika Road, together with sections of Westlands, are also listed as flood‑vulnerable.

Preparedness actions and health alerts

Simiyu said the county is concentrating on mitigation, preparation and response readiness, designating schools and other public facilities as temporary evacuation centres.

Health authorities warned that flood‑related contamination could trigger outbreaks of cholera, typhoid, dysentery and hepatitis A.

Health Principal Secretary Mary Muthoni confirmed contingency plans to strengthen emergency medical services, community outreach and support for vulnerable groups.

Ongoing county and national measures

Nairobi County will continue clearing waterways and stockpiling emergency supplies as the short‑rains season draws near.

Other counties across Kenya are also mapping flood‑ and landslide‑prone areas and stepping up preparedness activities ahead of the anticipated rains.