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Ecosystem-based Flood Risk Management in Sub-Saharan Cities

Flooding poses a significant threat to cities in the Global South. Urban floods are becoming more common as a result of increasing urbanization, climate change, and poor urban planning including the gap in service provision and limitations in effective solid waste management. Rapid urbanisation means cities have reduced ability to learn from mistakes and build adaptive capacity. Urban flooding is a localised event, and is experienced unequally by residents of cities, based on their location in a city. In most cases, more exposed and vulnerable poor neighbourhoods, particularly in informal settlements, face greater impacts including disasters. There is a broad range of interventions and measures to reduce flood risk at different scales. This summary showcases good practices in flood management approaches in Accra, Cape Town, Durban, Nairobi and Mombasa. These span from nonstructural to hard structural solutions (grey infrastructure) and soft solutions (nature-based). Examples of ecosystem or naturebased interventions include planting vegetation on slopes to prevent erosion(Accra), restoration of sand dunes (Cape Town), river rehabilitation projects (Durban), rehabilitation of wetlands (Nairobi) and rehabilitation of mangroves (Mombasa)
Author:

Gajjar, S. P.; Wendo, H.; Polgar, A.; Hofemeier, A.

Language: English
Published By: PlanAdapt; CDKN
Published date: 2021

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