Document Type : پژوهشی
Authors
1 Civil Engineering Dept, Aytolah Borojrdi
2 Associate Professor of Civil Engineering Department, Ayatollah Borujerdi University, Iran
3 Civil Engineering Dept. Ayatolah Borojerdi
Abstract
Over the past few decades, as a result, population growth, industrialization, urbanization, etc., demand for water has increased, most of these requirements have provided by exploiting groundwater resources. Therefore, the uncertainty in the demand and supply of water should be minimized by proper groundwater management, by identifying areas with groundwater potential. In this study, it has been attempted to find the potential groundwater resources in Silakhor plain using combined Analytical Hierarchy Process (AHP) and fuzzy TOPSIS method in GIS environment. In this regard, eleven thematic layers including layers of lithology, rainfall, vegetation cover, lineament density and distance, elevation, slope, land surface temperature, land use and drainage density and distance were prepared based on satellite image processing and statistical data, used to create a groundwater resource potential mapping. Groundwater resource potential map was classified into five categories including high, good, medium, low and very low potential. Accordingly, the high to moderate potential sites are located more in the center and southwest of the plain and correspond to quaternary alluvial and carbonate hard rocks zones. Validation was done by the number of wells in the area and the results indicate that the use of an integrated approach AHP and Fuzzy TOPSIS methods in groundwater potential mapping with the location of the wells is in good agreement, about 87% of the wells are located in areas with moderate to high groundwater potential.
Keywords
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