SUMMARY
The present article analyses the manifestations of the risks of erosion as well as their consequences on the living environment and the population in the city of Korhogo, located in the north of the Ivory Coast. In contrast to developed cities generally exposed to major risks of technological, transport, hazardous and natural products, cities in developing countries, particularly in sub-Saharan Africa, are much more susceptible to natural hazards (D. A. Alla et al., 2018). As part of our study, the risk areas were determined first with the level curves and the plot plan to construct the Digital Terrain Models (NTM) of the city of Korhogo. Also, the different types of field surveys, the collection of data relating to the demonstration and the causes of erosion in the city of Korhogo, has their consequences on the population and the living environment as well as social mitigation measures in the face of this natural risk.The results show that erosion leaves imprints in the space including streets, walls, foundations of walls and power poles. Also, we have the denudation of the roots of the trees and the pipes of SODECI. Erosion is a very present phenomenon in the city of Korhogo, where the vegetal cover of the soil is little repainted and also the tracks are majority unpaved.