Analyzing the effect of land use change on ground water quality of Delhi using GIS and remote sensing
Student name: Mr Govind Vardhan
Guide: Dr Chander Kumar Singh
Year of completion: 2015
Host Organisation: TERI University
Abstract: Groundwater is one of the most import sources for drinking and domestic water supply. The
chemical characteristics is controlled by the natural activities such as rock water interaction,
climatic condition, and other physical and chemical factors, while anthropogenic activities also
influences the quality of groundwater. It is vulnerable with both natural and anthropogenic
activities.
In this present study it has been found that dissolution, ion exchange and dissolution of aquifer
minerals are the most important natural process controlling the chemistry of groundwater in
study region. Quality assessment of ground water is done using Ground water quality index
(GWQI) at 68 points. Land use land cover (LULC) changes in the immediate vicinity of bore
well points were observed by creating different buffer zones. Buffer of 500m 1000m and 2000m
is created using Arc GIS. Multi criteria analysis was done by assign weights to different water
quality parameter. The water quality was further grouped in to 6 classes varying from Very good
to Unfit for drinking. It has been found that change in land use practices has a direct impact on
groundwater quality index. In those area where plantation and fellow land increases the quality
of ground varies from very good to moderate while increase in agriculture and urban area
adversely affects the groundwater quality index and makes it unfit for domestic supply.
Key words: Groundwater, Land use/Land cover, GWQI
