Heavy Downpour Paralyzes Nairobi as Floods Swamp Roads and Expressway

Nairobi was brought to a standstill on Saturday morning, October 4, following a night of heavy rainfall that left several parts of the capital submerged and traffic in chaos.

The torrential downpour, which began late Friday and stretched into the night, overwhelmed drainage systems across the city. Low-lying areas and major roads within the Central Business District (CBD) were hardest hit, with motorists and pedestrians forced to wade through stagnant floodwaters.

Sections of the Nairobi Expressway were also inundated, causing hours-long traffic jams. Near Nyayo Stadium, vehicles were stranded as drivers hesitated to push through deep waters.

“I spent almost two hours stuck near Nyayo Stadium because the water was too deep to move,” said James Mwangi, a matatu driver. “The drainage here just can’t handle the rain.”

Drainage Debate Rekindled

The flash floods once again ignited debate over Nairobi’s fragile drainage system. While frustrated residents pointed fingers at the county government, Nairobi Environment Chief Officer Geoffrey Mosiria urged citizens to also play their part.

He noted that residents and businesses often block drainage channels, making it difficult for the county to manage flash floods effectively.

“Mvua kidogo tu na nimeanza kupata strays from all corners. Issue ya drainage tunajaribu kila wakati kusort, but the same people responsible for the blockages wakichukuliwa hatua, wengine wenu mnateta jameni!” Mosiria said, defending the county’s efforts.

Heavy Rainfall Advisory in Effect

The Kenya Meteorological Department had already warned of heavy rainfall across the country from October 3 to 5. The advisory highlighted expected rainfall exceeding 20mm within 24 hours, particularly in the Lake Victoria Basin, Rift Valley, Highlands west of the Rift Valley, and parts of Nairobi.

The agency also cautioned that the rains would likely be accompanied by strong winds, heightening the risk of flash floods and transport disruptions.

As residents grapple with waterlogged streets and stalled traffic, the incident underscores Nairobi’s recurring struggle with urban flooding—an issue that resurfaces with every heavy downpour.