Aftab Ahmad Khan
Irrigation Research Institute (IRI), Government of the Punjab, Irrigation Department, Lahore, 54500, Pakistan
Publications
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Research Article
Groundwater Vulnerability Assessment of Irrigated Aquifer through DRASTIC and GIS Modeling- A Case Study from Vehari Pakistan
Author(s): Ghulam Zakir-Hassan*, Muhammad Sanaullah and Aftab Ahmad Khan
Tremendously increasing population rate, industrial and agricultural activities have led to the higher demands of groundwater to meet the requirements since last decades. Excessive pumping of groundwater has dramatically changed the flow dynamics of groundwater to an alarming situation. DRASTIC method, developed by the US Environmental Protection Agency (EPA), has been used for the assessment of groundwater contamination risk. The application of the DRASTIC model involves the seven parameters such as depth to water table D, net recharge R, aquifer media A ,soil media S, topography T., impact of vadose zone I and hydraulic conductivity C. Each parameter was assigned weightage and GIS tool was used to interpolate the field data. The modeled groundwater vulnerability generated reflects DRASTIC scores ranging from 65 to 190. Model also provides a basis for protecting the aquifer from poll.. Read More»