Groundwater vulnerability mapping using modified DRASTIC ANP

Abstract

Groundwater vulnerable zones in phreatic aquifers of Nagpur city in India were evaluated using the modified DRASTIC method in the Geographical Information System (GIS) environment. In the present research, the ANP was applied for the first time to DRASTIC parameters for weight modification. Vulnerable groundwater zones obtained from various DRASTIC approaches were compared and validated using field data on nitrate concentration. A better correlation was established with the proposed Modified DRASTIC ANP procedure.