Spatial variation of the water rising and water table salinity in the Basin of Ouargla (Algerian Sahara)

The study shows that the problem of water rising has had serious effects on the physical degradation of soils by the congestion that it causes and the formation of gypseous crusts, compact, as well as the chemical degradation by the salinization of soils. The results of the study also show that the risk of salinity is proportional with the piezometric level of water table depth. The obtained values are too high and exceeds the authorized standards of water salinity, for instance the degree of water table salinity vary from: 2.4 g.l-1 and reaches 150 g.l-1 in some regions of Ouargla Basin.