[01] Uwera Martine, Department of Environmental Economics and Natural Resources Management/Faculty of Environmental Studies, University of Lay Adventists of Kigali, Kigali, Rwanda. [02] Nsanzumukiza Martin Vincent, Department of Environmental Economics and Natural Resources Management/Faculty of Environmental Studies, University of Lay Adventists of Kigali, Kigali, Rwanda. [03] Maniragaba Abias, Department of Environmental Economics and Natural Resources Management/Faculty of Environmental Studies, University of Lay Adventists of Kigali, Kigali, Rwanda. [04] Mukasekuru Francoise, Department of Environmental Economics and Natural Resources Management/Faculty of Environmental Studies, University of Lay Adventists of Kigali, Kigali, Rwanda. [05] Mucyo Jean Claude, Department of Environmental Economics and Natural Resources Management/Faculty of Environmental Studies, University of Lay Adventists of Kigali, Kigali, Rwanda. [06] Ntabugi Marie Claudine, Department of Environmental Economics and Natural Resources Management/Faculty of Environmental Studies, University of Lay Adventists of Kigali, Kigali, Rwanda. [07] Niwenshuti Emmanuel, Department of Environmental Economics and Natural Resources Management/Faculty of Environmental Studies, University of Lay Adventists of Kigali, Kigali, Rwanda.

Nowadays, the world is facing many environmental concerns due to the rapid urbanization, concentration of economic activity, competition for space in dense urban agglomerations, unplanned development, environmental degradation and climate change. Thus, leading to an increase in the probability of floods, water, and air pollution, urban sprawl, and lack of waste management occurrence and their risks in urban settings. This study aimed to analyse the contribution of green infrastructures in reducing flood risk in Kigali City, Rwanda. The Geographic Information System (GIS) and Microsoft Excel were the main tools employed by the study. The study utilized secondary data on green infrastructures which revealed that the high possession rate is localized in Gasabo district. Regarding recent flood losses, it was realized that from January 2017 to April 2020, an advanced number of flood losses were registered in 2018. The authors based on these recent events, literature review, and expert opinion to select eight factors that likely contribute to flood occurrence in Kigali City. The flood occurrence was highly attributed to land use and land cover (26.7%), rainfall (21.16%), elevation (16.41%), slope (14.35%), and soil texture (11.37%). The spatial distribution of flood hazards highlighted that residents of Gasabo district are a large extent exposed to flood at 55.4% compared to residents of Nyarugenge and Kicukiro districts, exposed to flood at 25.4%and 19.2%, respectively. The ANOVA test of the relationship between variables generated an average possession value of 0.299. It was concluded that the initiated green infrastructures (mainly wetland) did not contribute to flooding risk reduction in Kigali city. Thus, green infrastructure location suitability is highly recommended.

Flood, GIS, Green Infrastructures, Wetland, Risk Reduction

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