The study has been located in the municipality of Dalías, eminently agriculturist, and located in the southwest of the province of Almeria. A hidrologic study has been developed, with the purpose to solve to the potential risk of floods in the city centre as in the valley, proposing the construction of 7 docks of gravity, in different points of the river basin, in order to laminate the flood. On the other hand, it was tried to replace the irrigation by traditional flood, replacing the present network of drains and implanting systems of located irrigation, which demands to evaluate the hydric resources available previously. The contribution of the different sources of supply from the municipality has been analyzed, as well as the consumptions considered for the predominant drops. By this way, the transformation of the network of drains in a closed system of distribution sets out, to pressure and by demand, constituted by a network of polyester pipes reinforced with fiber glass, that guarantees the provision to all the regable zone of this Municipality.