The Coghinas coastal plain is a alluvial plain in a half-graben structure where three different zone are morphologically divided. On the basis of the criteria followed in this investigation, the climatic data, the comparison between historical maps (since the 1841), the fluvial evolution suggest a discontinued and disuniformed sedimentation related to the inner plain. From a morphological point of view, the three different zones have allowed to obtain a possible morphological reconstruction during the Pleistocene on the basis of the different processes and paleoclimatic stages for each zone. The analysis of the water table aquifer during 18 months (salinity and conductive capacity) have demonstrated the geometries of the salt water intrusion in two different bodies explained such the paleochannels of the Coghinas river.

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