The publication gathers a synthesis of the results obtained in the investigations, doing special incidence in the hydric defiinition of the hydrogeological characteristics of the aquifers, its balance and the water applications. The high-priority use is the irrigated land, being developed an agriculture very specialized, that surpasses the 20,000 has and that has received a great peak in the ten last years with the arrival of waters of the Tajo-Segura divert.