The Geneva Water Hub has requested early 2019 the expert advice of DROPSTONE to carry out an extensive review of the scientific knowledge related to the Senegalo-Mauritanian Aquifer Basin, in order to prepare a round table with representing members of the four States sharing the same underground waters (Mauritania, Senegal, Gambia and Guinea-Bissau).

The review consisted in collecting and analysing all existing information related to the hydrogeology of the aquifer, in particular the spatial representation of the water reserves, the water balance (infiltration versus extraction rates), the different uses of the water ressources, the potential for conflict, the location of overexploitation sites, pollutions, and past and future infrastructure projects related to the aquifer.

The findings of the review were consigned in a report and summarised for the participants. It served as a basis for the round table discussions.