2.2 Modification of original GALDIT method
GALDIT is a model employed for assessing the vulnerability of underground aquifers to seawater intrusion using six parameters related to seawater intrusion. Data about these six parameters were collected and scored according to the criteria, and maps for the parameters were generated by applying predefined weights. Scores of 2.5, 5, 7.5, and 10 were determined according to the criteria. The weight of four was assigned to the index that had the greatest effect on seawater intrusion, and the weight varied by the effect. The relationship between the index according to the criteria and weight of the index is expressed as follows: