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Groundwater vulnerability assessment using modified hydrological DRASTIC model in Meycauayan City, Bulacan, Philippines

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Research Paper 01/11/2020
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Groundwater vulnerability assessment using modified hydrological DRASTIC model in Meycauayan City, Bulacan, Philippines

Francis Jhun T. Macalam, Marisa J. Sobremisana, Patricia Ann J. Sanchez, Simplicia A. Pasicolan
J. Bio. Env. Sci.17( 5), 11-23, November 2020.
Certificate: JBES 2020 [Generate Certificate]
Key: DRASTIC modelGeographical information systemGroundwater Vulnerability AssessmentMeycauayan City

Abstract

DRASTIC System coupled with a geologic software was used in this study to determine the location of potential areas in Meycauayan City were groundwater is susceptible to pollution. The state of groundwater pollution is a critical issue with increasing population and industrial development in Meycauayan City. The main objective of the study was to show areas of the highest potential for groundwater pollution based on hydro-geological conditions and human impacts. Eight major hydro-geological factors (Depth to the water table, net Recharge, Aquifer media, Soil media, Topography, Impact to Vadose zone and Hydraulic Conductivity) adding Land Cover as the last parameter incorporated into the modified DRASTIC model and geographical information system (GIS) to create a groundwater vulnerability map by overlaying the available hydro-geological data. The result showed that the groundwater resources of Meycauayan City were found to be high potential vulnerable to contamination having a vulnerability index of 180 using DRASTIC MODEL. For groundwater management, the generated maps could be used as a tool for decision making in by the Local Government Units (LGU) in their Comprehensive Land Use Plan (CLUP) where they can identify where the development will take place. This could be used to assist in the formulation of policies related to groundwater resource management and protection in Meycauayan City.

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