In the 21st century, water resource management will be a major socioeconomic issue and an essential component of progress in semi-and regions The Soudano-Sahelian region of Africa suffers from a chronic lack of reliable hydro-geological maps for local water resource managers To provide better tools for groundwater exploration, this paper focuses on hydro-geological lineament mapping using remote sensing data The objectives were (1) evaluate the potential of multi-angular and multi-temporal Radarsat-1 images for extracting lineaments in semi-and regions and (2) provide map of potential hydro-geological lineaments. No significant relationship was found between lineament yield and incidence angle of Radarsat-1 images. while lineament spatial distribution was in good agreement with the land use and geology of the study area. The high scores observed for NNE-SSW and NNW-SSE orientations match the results of local lineament studies of the region. Radarsat-1 image acquired on May 01, 2001 offers the greatest potential, due to the reduced effect of vegetation during this region's dry season Potential hydro-geological lineaments were mapped using the weighting of well location, presence of green vegetation during the dry season, preferential lineament orientations and presence of cross-points The mapping revealed five classes (Very low, Low, Moderate, High and Very high) of potential hydro-geological lineaments with high and very high potential poorly represented. Results also reveal that most wells are far enough from lineaments or cross-points and hence the inefficiency of existing drilling programs. (C) 2010 Elsevier Inc All rights reserved.