Like other cities, Kigali is and will be significantly affected by climate change. And this would have serious consequences for health, livelihoods and material assets, especially for urban populations living in informal and vulnerable neighborhoods. With the acceleration of demographic growth, urban agglomerations are becoming incapable of integrating the large flows of populations wishing to settle in cities, hence the proliferation and densification of non-regulatory neighborhoods, which are the basis of multiple urban dysfunctions. In addition, Kigali is experiencing an increase in episodes of intense precipitation. These two phenomena have made the presence of water in the city a danger. However, during this study focused on the Nyabugogo neighborhood, placing the problem of flood risks at the heart of the urban redevelopment project will effectively improve the environmental, economic and social condition as well as the attractiveness and the city's competitiveness by providing eco-responsible solutions