Finding the Potential of Groundwater Contamination in Baghmalek Pain in GIS Condition through DRASTIC Model

Journal of Water Science & Engineering

مقاله 2، دوره 3، شماره 8، اسفند 2013، صفحه 21-31   

نوع مقاله: Original Article

نویسندگان

Gelareh Reyhani^* ؛ Heydar Ali Kashkuli¹؛ Narges Zohrabi¹؛ Ali Naderifar²

¹Department of Water Sciences, Ahvaz, Islamic Azad University, Ahvaz, Iran.

²Department of Civil Engineering and Water Resourcesو shoushtar Branch, Islamic Azad University, shoushtar, Iran.

چکیده

Ground water is regarded as an important source of sweet water because it has less pollution potential and it has high reserve capacity compared with surface water. Therefore, it I necessary to prevent pollution from ground water, considering management of ground water resources in line with quantitative management of water resources. In this research the potential vulnerability of ground water pollution in Baghmalek plain has been studied considering the geology, hydrology and hydrogeology characteristics of the region. The DRASTIC model has been applied and the final map of aquifer vulnerability using overlappingtechnic of GIS has been prepared. The DRASTIC model is a quantitative model; it is abbreviation of 7 parameters influential in transferring pollution including depth to water table, net recharge, aquifer media, soil media, topography, impact of vadose zone and hydraulic conductivity. In the region under investigation, GIS software has been applied to capture layers related to these parameters and to capture the final map of vulnerability because of various capabilities of GIS software in inputting, outputting and processing of data. Finally, weighting, rating and integrating the above-mentioned seven layers, the DRASTIC index was calculated for the whole region which has been estimated to be 62 to 129 in that area. The results of the model shows that parts of northern plain are more vulnerable and southern and eastern parts of the plain are potentially less vulnerable. 

مراجع

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