Mozambique - Upscaling nature-based flood protection in Mozambique’s cities : Cost-benefit analyses for potential nature-based solutions in Nacala and Quelimane

Cities in Mozambique, particularly those located on its coastline, are highly exposed to climate risks and repeatedly suffer from severe floods. To support Mozambique in addressing these challenges and build climate resilience, the World Bank, jointly with the German Development Cooperation through KfW, have financed one of the first nature-based urban flood management projects in the coastal city of Beira.

This study estimated the costs and benefits of revegetation of land in the less densely populated areas and a combined measures approach for inner-city areas which included retention ponds, improved drainage system, toe protection of gullies and small scale revegetation in Nacala city. This study also estimated the costs and benefits of vegetation of land and a combined measure which includes the construction of retention ponds, drainage channels, rehabilitation of existing drainage channels, outlets and flap gates, green revetment, dyke with green revetment, constructions of protection of bridge abutment and a certain area allocated for the protection and re-growing of mangroves, in Quelimane city.