Lineamentary and Structural Cartography of Iullemmeden Basin in the Dosso Region (South-West of Niger)

Located in the southwestern part of the Niger and the Iullemmeden basin, the Dosso region is full of enormous potential in groundwater used for feeding populations and livestock. In the region of Dosso, given the rapid population growth, the population is facing problems of drinking water supply. To meet the needs of the population, the implementation of village water programs has led to an ever increasing demand for groundwater, causing a problem of management of these resources. Therefore, for judicious management of these water resources it is important to improve knowledge of the geological and hydrogeological characteristics of aquifers in the Iullemmeden basin. Many other studies carried out in the Iullemmeden basin have determined the hydrogeological, hydrochemical and hydrodynamic characteristics of these aquifers and their recharge conditions. The main objective of this contribution is to highlight the lineament networks and then analyze the different directions to validate the fracturing map of the Dosso region. The implemented methodology integrates remote sensing techniques and GIS tools to process and analyze satellite images. This approach has led to the identification, in the study area, of two main directions of NE-SW and NW-SE fractures.