Ahmad Nohegar; Fatemeh Riahi; Majid Kholghy; Hasan Vagharfard
Volume 13, Issue 3 , October 2015, , Pages 103-112
Abstract
One of the best ways to prevent groundwater contamination is identifying aquifer vulnerability areas, monitoring of spatial quality changes and then managing the water resources exploitations and the land uses.. In this study by using a DRASTIC model in SARKHON aquifer vulnerability has been studied. ...
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One of the best ways to prevent groundwater contamination is identifying aquifer vulnerability areas, monitoring of spatial quality changes and then managing the water resources exploitations and the land uses.. In this study by using a DRASTIC model in SARKHON aquifer vulnerability has been studied. Thus, geographic information system (GIS) to provide aquifer vulnerability map has been used and seven hydro geologic factors influencing vulnerability has been studied. The result, 70% area affected has moderate vulnerability, 27.5% has high vulnerability and 2.5% is low vulnerability. In both sensitivity analysis methods: the map removal and single parameter was assessed. DRASTIC vulnerability index most sensitive to both sensitivity analysis methods shows the effect of vados zone results from a single parameter sensitivity analysis of the study area shows a depth of parameter, the most important criteria in assessing the vulnerability of but, unexpectedly, less impact on the vulnerability of the study area, weight and much different about 12% with weight theorical. Nitrate ion measurements from multiple wells (water and agriculture water) in order to verify the measurement accuracy of the model was used to model. The results indicate the model high accuracy of the area studied.
