ABSTRACT OF THE THESIS
This PhD work is mainly based on flood risk reduction in Mali through the assessment of hydrological models in the Upper Nige River Basin (Koulikoro watershed). Made up of four specific objectives, each specific objective has been achieved. Lot of data, materials and methods have been used during this study. Results showed that floods in Bamako are not due to the extreme rainfall only. Also HBV and HEC-HMS models were used to assess the flood forecasting system through the NCEP rainfall data. Despite all these results, Early warning system have to be done to complete this data as well as the consecutive rainfall days (3;5;7 days of rainfall) analysis.