Assessment of groundwater vulnerability of Amritsar district using GIS based DRASTIC model

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dc.contributor.advisorKhullar, N. K.
dc.contributor.authorSandeep Kaur
dc.date.accessioned2017-12-21T05:08:33Z
dc.date.available2017-12-21T05:08:33Z
dc.date.issued2017
dc.description.abstractGroundwater contamination is of particular concern as groundwater is the principal source of water for irrigation, drinking and industrial activities. The present study investigated the groundwater vulnerability of Amritsar district (Punjab) by using the GIS based DRASTIC model. This model uses seven hydrogeological parameters viz. depth to water table, net recharge, aquifer media, soil media, topography, impact of vadose zone and hydraulic conductivity. Layers for all these parameters were created in ArcGIS. Groundwater vulnerability index was computed within ArcGIS and it varies between 129 and 175. The results of the analysis showed that about 57.91% study area lies in the low vulnerable zone with vulnerability index ranges between 129 and 145, 40.46% area lies in the moderately vulnerable zone with vulnerability index ranging between 145 and 160 and 1.63% area is the high vulnerable zone with vulnerability index range between 160 and 175. Sensitivity analysis was also carried out to evaluate the impact of each DRASTIC parameter on groundwater vulnerability index. Two methods were used namely single parameter sensitivity analysis and map removal sensitivity analysis. Single parameter sensitivity indicated that depth to water table, net recharge, topography and hydraulic conductivity layers are most significant hydrogeological parameters for the assessment of groundwater vulnerability of the study area. Map removal sensitivity analysis indicates that vulnerability index is highly sensitive to the depth to water table layer, topography and soil layers but it is least sensitive to aquifer media layer. The study will be helpful for land use planning.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810037962
dc.keywordsGroundwater vulnerability, DRASTIC model, geographic information system, GISen_US
dc.language.isoenen_US
dc.pages45en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemAssessment of groundwater vulnerability of Amritsar district using GIS based DRASTIC modelen_US
dc.subSoil and Water Engineeringen_US
dc.subjectnullen_US
dc.themeAssessment of groundwater vulnerability of Amritsar district using GIS based DRASTIC modelen_US
dc.these.typeM.Techen_US
dc.titleAssessment of groundwater vulnerability of Amritsar district using GIS based DRASTIC modelen_US
dc.typeThesisen_US
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