Objective: to determine the sources of recharge and groundwater flow directions to the wetlands of Andrade Plateau.

Results: The piezometric network determined the level of the local aquifer that is in contact with wetland-dependent infiltration constantly migrating from the hydraulic dome under the CTA, since the slope described by the water level in the piezometric configurations haves direction from the Canal discharge into the lagoons, which is temporal and regionally modify, by the effects arising from the risl of infiltration during the winter. However, as a result of canal lining this dome levels are lowered and the water level measured in piezometers continues diminishing