World Bank-Funded Climate Resilience Project Saves Tanzania’s Port City from Drowning

By Kizito Makoye
DAR ES SALAAM, Tanzania, Jul 24 2025 – When the rains pounded through the night, 44-year-old Teresia Katimba clutched her rosary and prayed silently, her fingers trembling with each whispered Hail Mary. A devout Catholic and mother of four, she stayed awake, huddling her children, hoping the floodwaters wouldn’t engulf them.

In Jangwani, a flood-prone neighborhood in Dar es Salaam, where the Msimbazi River slithers through crowded shacks and a tangle of mangroves, heavy rains routinely trigger flooding and displacement.

“There were nights we didn’t sleep,” says Katimba. “You just sat awake, waiting for the water to come.”

Katimba had learned to read the signs. And on that night, they spelled danger. Her house, nestled precariously beside the riverbank, became a target for misery. Murky floodwater—infested with sewage, discarded plastic bottles and garbage—perpetually surged through the door, soaking mattresses and spoiling maize flour, charcoal and dried sardines.

“My children were terrified; we somehow managed to survive anyway,” she says.

Katimba, an entrepreneur, saw the danger. But like many residents in the impoverished neighborhood, she stayed put—until the floods almost swept away everything.

Today, her life is different. She received compensation in 2024 and relocated to Madale, a dry, forested neighborhood 39 kilometers away, where she built a modest house. “We’re very happy to be here,” she says. “There’s no floodwater to worry about.”

The plight of Katimba’s family highlights wider challenges for many city dwellers.

Teresia Katimba has moved from the dangerous floodplains to safer ground. Credit: Kizito Makoye/IPS

Miraculous Escape

Matilda Msemwa, a resident of Kigogo, recalls how the floods engulfed her living room and destroyed her valued furniture.

Shortly after midnight she sensed a foul smell and an abrupt change in air pressure. Minutes later, the floodwater had risen to waist level.

“I had to scream for help. My daughter nearly drowned as the floods violently filled the house,” she says

Rapid Urbanization

Home to 5.8 million people, Dar es Salaam, one of Africa’s fastest-growing cities, is highly vulnerable to flooding. Around 70 percent of its inhabitants live in informal settlements that are prone to flooding. In 2018, one flooding event at the Msimbazi basin inflicted property damage worth USD 100 million, or 2 percent of the city’s GDP, according to World Bank data.

But for the first time, Dar es Salaam is tackling the flood menace head-on.

Backed by climate financing, the USD 200 million World Bank-funded Msimbazi Basin Development Project aims to turn Dar es Salaam’s flood-prone areas into a climate-resilient green park.

Running through 2028, the project targets the city’s lower Msimbazi River basin, home to 330,000 people living in squalid settlements.

Plans include modern flood control infrastructure—river dredging, terracing, and a complete overhaul of the Jangwani bridge and bus depot.

“This project was conceived after the floods in February 2018, which were very devastating,” says John Morton, a project manager at the World Bank. “The then vice president, who is now the president, convened all the agencies to say, ‘Please come up with a solution for Msimbazi’.”

It was precisely this reality that gave birth to the Msimbazi Opportunity Plan—a comprehensive roadmap to restore the degraded basin and manage future floods. That blueprint is now being realized through a concessional loan from the International Development Association (IDA), part of the World Bank Group.

“IDA credits are concessional,” Morton explains. “They are basically low- or no-interest, with a long grace period and a long repayment period.”

A graphic representation of the Msimbazi Basin Development Project.

More Than Money

But it’s not just the World Bank putting its money where the floodwaters are. The Netherlands and the Spanish Agency for International Development Cooperation (AECID) are also on board.

“The Netherlands’ contribution is a grant,” says Morton. “They’re financing 30 million euros, matching our co-financing for a particular subcomponent of the project… It’s a big earthworks contract. They’ll finance 50 percent up to their 30 million euro cap, and then we finance the rest.”

The Spanish funds, he adds, are structured similarly to IDA’s and will be blended into the project once finalized.

Evacuating to Safety

One of the most controversial parts of the initiative is the resettlement of low-income residents currently living in the floodplain. For Morton, the logic is simple—rescue starts with relocation.

“It was very evident that people did not want to live there,” he says. “Their property was being damaged. Their kids were out of school… the flooding was too devastating.”

According to the World Bank, USD 30 million has been disbursed for resettlement of around 3,500 households trapped in high-risk areas.

Reclaiming the Green

At the center of the project’s vision is not just dry homes but a green, living park. The Msimbazi floodplain, currently a chaotic sprawl of settlements and garbage, will be restored to a natural detention area—a place where floodwaters can spread without destroying lives and property.

“Eventually, what we’ll have is basically a flood detention area that’ll be a park and have natural ecosystems, as well as some more park facility-like things that can naturally flood as it should,” Morton says.

Mangrove forests—critical to both river and marine ecosystems—will be protected and expanded.

“The mangroves provide an important function, both on the coastal side and for the river itself,” says Morton. “Right now, they’re under stress from sedimentation and garbage. The idea is to expand them and maintain their function in purifying the water.”

Waste Not, Want Not

Another key concern for Dar’s residents is waste—both solid and liquid—that chokes the river and pollutes the Indian Ocean. Unplanned dumping of rubbish, household sewage, and industrial effluents has turned the river into a toxic soup in places.

The project, says Morton, addresses this head-on.

“There’s a component on watershed management… including reforestation in the middle and upper basin, protection of riverbanks, and investments in solid waste management,” he says.

Many of these interventions target informal settlements that currently dump waste directly into the river.

“There are investments to help organize them and organize services to make sure that collection improves,” he adds.

On the sewage front, the project will initiate a comprehensive monitoring programme to better understand wastewater flows and engage responsible agencies like DAWASA to develop sewerage plans.

Cautious Optimism

‘It’s a turning point—but only if we get it right,’ says Sylvia Macchi, an urban expert on Msimbazi Valley Project

For Macchi, a respected urban development specialist and long-time observer of Dar es Salaam’s planning chaos, the Msimbazi Valley Development Project is “perhaps the most ambitious climate-resilience intervention this city has ever attempted.”

But she’s not clapping just yet.

“We’ve seen grand plans come and go in Dar,” she says. “What matters now is execution—not promises.”

The professor, who has spent decades researching informal settlements and urban flooding in Tanzania, believes the project has the potential to redraw the city’s future—if handled properly.

“Clearing the valley, relocating at-risk communities, and restoring green spaces along the Msimbazi River—that’s urban transformation at scale,” she tells IPS.

Will it Last?

All eyes are now on the future. The project is scheduled to run until 2028—but what happens then?

“There’s an idea to create an institution to manage the park, real estate, and broader watershed,” Morton says. “That’s being studied now—on the legal aspects and how it would be financed.”

Revenue could come from land sales, developer fees, and even regulated sand mining.

“There’ll be proper sand mining, which will help manage the watershed and generate funds,” he explains.

This institution will oversee not just park maintenance but also ensure that gains in environmental protection and climate resilience are not lost after the project closes.

An Oasis in the Making

In a city gasping for green space, the transformation of the Msimbazi floodplain into an urban oasis is as symbolic as it is strategic. Dar es Salaam doesn’t just need protection from floods—it needs hope. And for Morton, the basin’s rebirth is about more than drainage ditches and concrete.

“This is going to be an asset for the city,” he says. “Not only to reduce flooding but to be a park—a green space that doesn’t exist in Dar es Salaam now. Everybody will have access to it, including low-, medium-, and high-income people. That’s the broader benefit.”

If successful, the Msimbazi Basin Development Project won’t just protect Dar’s poorest—it will provide a blueprint for climate-resilient urban planning across Africa.

“This is about turning adversity into opportunity,” Morton says with measured optimism.

From the banks of the Msimbazi River to the halls of the World Bank, the vision is clear. Dar es Salaam will no longer surrender to the floodwaters. With strong oversight, community input, and green innovation, the city’s greatest vulnerability may just become its most precious asset.

IPS UN Bureau Report

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