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This article deals with the subject of the Ghouts; an old hydro agricultural system of origin of the valley of Souf which, today is in distress. Hundreds of Ghouts were flooded by the waters of the lift and backfilled. Work missions were carried out in the oases of Souf during the period 2007-2017 to try to understand the decline of this heritage. Unfortunately it is the waters from the Albian aquifer of the Continental Intercalary and the sanitation that is the main cause of the decline of the Souf Ghouts.