Hydrochemical assessment of groundwater resources for drinking by Analytical Hierarchy Process (AHP) and Fuzzy Logic in GIS (Case Study: Aghili Plain in northeast Khuzestan)

The target of this article is hydrochemical of assessment Aghili plain ground water resources in the eastern Khuzestan province. In order to do this several parameters such as TDS and cation and anion that exists in the water were used. AHP method as one of the most widespread method using decision-making tools was applied. In order to do comparison، a coefficient of danger for each parameter was calculated. Then based on this coefficient، the value of each parameter and specified weight coefficient was determined. For analyzing and assessment of several criterion، parameters should be accommodated for measurement''s scale. For this purpose، the logic fuzzy method using specific function، devoting the most value (number one) to the maximum of membership and the lowest value (number zero) to least membership was applied. In order to use the linear function the Schoeller classification was used to define maximum and minimum quantities of each parameter. The results indicate that ground water in most area of the Aghili Plain for drinking is in good level and just small parts indicate unsuitable quality in the south-west plain.