The purpose of the present work is to study the evolution of the levels of the aquifer of Vallelado and the characterization of this zone, from the evaluations of irrigation in parcel and of the system of distribution, carrying out the following methodology: - Determinations on the distribution network. - Measurement applied in parcel. - Measurement of uniformity of distribution of the irrigation in parcel. It is tried to know how they were executed, present state, conservation, maintenance and possible deficiencies. The levels of the aquifer will be studied in order to evaluate the variations throughout a year. We will analyze the problems of the farmers, the complaints and their form of work. All these aspects will help to characterize as far as possible this zone and to verify the advantage of the investments