Since the crisis that happened in 2002, artisanal gold panning activity is practised on the minor and major bed of Cavally river in Zouan-hounien (Côte d'ivoire). This generating activity of income to the populations is done without respecting the environmental and social measures. However the water of the river is used by this population for food, bodily, agricultural needs. This study aims at evaluating the impacts of artisanal gold panning on the morphology and the quality of water of the Çavally river. Thus, the treatement of satellite images by teledetection software ang geographics informations systems, the analyze and the treatement, with SEQ-Water tool, for samples taken are used. It comes out from this study that surfaces of the sections of the river evolved/moved from 5,68%, in 1986, to 16,31%, in 2011. Between 2011 and 2018, surfaces of the sections increased by 16,39% to 55,93%. This study raises too that water of the Çavally river is of average quality. It thus allowed to propose an action plan to fight against the impacts of the artisanal gold panning on the quality of water while being based on the classification carried out according to the uses.

The prevention against the pollution of groundwater has been over three decades a major concern for the specialists of the field of water. To that purpose, many methods that use intrinsic parameters have been adopted since 1987. For this study, two methods have been adopted to enhance the robustness of results. It is about DRASTIC and SINTACS who use both the intrinsic features of aquifers. The errors margins have been calculated for both maps so as to appreciate their veracity rate. Finally, these maps have been superposed to translate an infiltration on the salts content map which is supped to translate an infiltration from superficial origin. The results clearly indicate that whatever the method, three classes of vulnerability have been identified: the strong vulnerability class, the average vulnerability and the low vulnerability classes. Globally, the area remains moderately vulnerable. Whatever the errors margin that was determined shows the respective values: 16,74 % and 18,04 % for the DRASTIC and SINTACS methods. The superposition of the salts content map shows that the pollutant found in groundwater might have an origin that might not be from a superficial origin infiltration. The use of statistical tests as contribution to this study could lead to determine the origins of these pollutants.