Nigeria Floods Kill at Least 39 as Dam Overflows in Jos

At least 39 people are dead in flooding in Jos, the capital of Plateau state in central Nigeria, after days of heavy rainfall sent floodwater through communities downstream of the Lamingo dam. The BBC reported on 22 October that the Red Cross in Plateau state had confirmed the death toll and said rescue workers were still searching for more bodies, while about 3,000 people left homeless were sheltering in government buildings. Nigeria's National Emergency Management Agency said its teams were on the ground supporting the response.

Jos is the deadliest of a run of flood emergencies across Nigeria this week. In Nasarawa state, separate flooding submerged 18 communities in Doma local government area, killing at least two people and displacing more than 4,000 — in an incident linked by local reports to water released from the Lagdo Dam across the border in Cameroon. This explainer sets out what is known about both events, why dam-linked floodwater is so dangerous, and how to stay safe when the water comes.

What happened in Jos

The floods struck parts of the Jos metropolitan area after a spell of intense rainfall in Plateau state. The Red Cross in Plateau state told the BBC that the Lamingo dam overflowed after the heavy rain, sending water into nearby communities. Rescue teams were still working at the time of reporting, and the agency warned that more bodies could be found as the search continued.

Officials from NEMA, Nigeria's national emergency management agency, were also on the ground in Jos, coordinating with the state response teams. The scale of displacement was immediate: about 3,000 people forced from their homes were being housed in government buildings while assessments of the damaged areas continued.

The BBC noted that deluges of this kind are unusual in Jos, which sits in Nigeria's mountainous central belt — flooding on this scale is not the norm for the area, which is part of why the water caught communities off guard.

Eighteen communities under water in Nasarawa

A second flood emergency unfolded further south. In Doma local government area of Nasarawa state, floodwater submerged 18 communities, killing at least two people and displacing more than 4,000, according to reports from 20 and 21 October.

Local reports linked the flooding to water released from the Lagdo Dam in Cameroon — a large reservoir whose controlled releases have repeatedly sent surge water downstream into Nigeria in past flood seasons. The Nasarawa state government deployed its humanitarian agency to the affected areas, and a state official warned residents displaced from the flooded communities not to return home until the water receded.

Nigeria floods: why dam-overflow water kills so fast

A dam overflow — or a controlled release from one — behaves differently from ordinary heavy rain. The water arrives as a surge: a fast-moving wall that can rise in minutes, far quicker than rain alone would raise a river. People who could cope with a flooded road can be overwhelmed by a sudden current.

Surge water also carries enormous force. It moves vehicles, collapses mud-brick and poorly anchored structures, and drags debris — trees, sheet metal, whole sections of road — with it. What looks like a shallow crossing can conceal a channel scoured deep by the flow, and the water hides trip hazards, open drains and live electrical hazards beneath the surface.

The second danger is timing. Communities downstream of a dam often get little warning of a release or an overflow, and the worst of the surge can arrive at night, when people are asleep and evacuation is hardest. This is why Nigerian floods linked to reservoir releases have become a recurring tragedy: the hazard arrives faster than local warning systems can respond.

Flood safety: what actually helps

These rules apply anywhere in the world, and they are the ones emergency agencies repeat every flood season:

• Never walk through floodwater. Fast-moving water only knee-deep can knock an adult off their feet and sweep them away. If you must move through water, use a stick to probe the ground ahead, and go only if the water is still, shallow, and you know what lies beneath.
• Never drive through flooded roads. It takes surprisingly little depth of moving water to float a car or push it off the road — which is why our Storm Austen coverage carried the same warning: never drive through floodwater.
• Move to higher ground immediately when flooding starts, and follow the instructions of local emergency officials. Do not wait to collect belongings — the surge arrives faster than you think.
• Keep children away from floodwater entirely. Do not let children play in it.
• Treat floodwater as contaminated. It may carry sewage, chemicals and fuel — the same classes of hazard our chemical leak safety guide warns about. Do not drink it, and wash skin that has been in contact with it.
• After the water recedes, do not re-enter damaged buildings until they are checked, beware of weakened structures, and check that gas fittings and electrical connections are intact — floods can damage fuel lines and cylinders, the risks our gas cylinder safety guide describes.
• Watch for illness after the flood. Standing water breeds mosquitoes and can contaminate wells; if diarrhoea, fever or other symptoms appear in the days after flooding, seek medical care. Major health emergencies escalate fast — our DRC Ebola outbreak explainer shows what containment takes when one does.

What our records show, and what they miss

Our records show the verified shape of the Jos disaster as reported on 22 October: at least 39 dead in flooding in Plateau state's capital, attributed by the Red Cross to the Lamingo dam overflowing after heavy rain; rescue and search operations still under way; about 3,000 people homeless and sheltering in government buildings; NEMA teams on the ground. They also show the second emergency: at least 2 dead and more than 4,000 displaced across 18 communities in Doma LGA, Nasarawa state, linked by local reports to Lagdo Dam water releases. Nigeria has featured heavily in our recent coverage — from the Otedola Bridge tanker fire in Lagos on 19 October to our #EndSARS anniversary analysis published this week.

What they miss is the full toll and the full picture. The Jos death count is a lower bound — the Red Cross said more bodies were still being searched for. How much of the Jos flooding came directly from the dam overflow versus the rainfall itself has not been independently broken down. In Nasarawa, the role of the Lagdo Dam release rests on local reports; the timing and volume of any release have not been officially detailed. And as always with flooding in remote communities, the recorded numbers capture what made the news — the quieter damage, in places with less reporting, goes uncounted.

The short version

• At least 39 people are dead in flooding in Jos, Plateau state, after heavy rain overflowed the Lamingo dam, according to the Red Cross; about 3,000 people are homeless and the search for more bodies continues.
• In Nasarawa state, separate flooding linked to Lagdo Dam releases submerged 18 communities in Doma LGA, killing at least 2 and displacing more than 4,000.
• Dam-overflow floodwater kills fast: it arrives as a surge with little warning, carries debris, and hides channels, drains and electrical hazards.
• Never walk or drive through floodwater; move to higher ground at once; treat floodwater as contaminated; check damaged buildings and fuel lines before re-entering.
• The Jos toll is a floor, not a ceiling — rescue work continues, and flood counts always thin out where reporting is thinnest.