چكيده لاتين :
The Maknassy basin in central Tunisia receives insignificant precipitation (207 mrn/y), but the
hydrological system retain very small quantities of water due to the steep topography and surface water resource
partiallymobilised witch is evacuated toward the basin outlet. However, the Maknassy plain support agriculture based
on ground water irrigation with increasing water demand last decades. These developments have boosted agricultural
productivity in the region. While these problems are mainly due to poor surface water management strategies in the
region, the groundwater resources in this basin should be properly assessed and suitable measures taken for uniform
surface water mobilization. As a first step in this direction, groundwater resources have been assessed. Regional
specific yield (0.017) and groundwater recharge have been estimated on the basis of water table fluctuation method.
Groundwater recharge amounting to 61.5 106 mי in a year takes place in the region through infiltration of rainwater
(48.1*10^6 M^3 mי for phreatic aquifer and י3.4*10^6 M^3 for the deep one), and recharge due to the infiltration in the Leben
quady bed (1.57*10^6 M^3). Recharge to deeper aquifers has been estimatedat 0.1*10^6 M^3 during dry seasons. Assuming
that at least 40 % (102.61 *10^6 M^3) of the total precipitation water (256.64*10^6 M^3 ) makes the runoff water, this
important resource can be mobilized in order to increase groundwater recharge. Subject to an arid climate, such region
requires an integrated water resource management. It permits to keep aquiferous system equilibrium and participateto
the sustainable development which integrates natural resource management
