Multi-Influence Factor Method to Determine Groundwater Potential Zone
using GIS and RS (Remote sensing) Techniques in Parts of Rajasthan,
India.
Abstract
The enormous groundwater demand globally have possessed a threat to
groundwater security. Rajasthan being one of the water deficit states of
India is pivotal to determine its groundwater potential zone for
sustainability. Diverse thematic layers such as drainage density,
landuse, rainfall, geology, geomorphology was prepared. The
geomorphology, landuse, drainage and soil map was prepared using IRS-1D
LISSІІІ satellite image. Through, appointing the relative weightage to
the thematic maps the final groundwater potential map was prepared. A
comparative analysis for the groundwater potential map and the
groundwater level data was done for confirmation. The groundwater
potential zone can be classified as high, medium or low. The positions
of various existing wells along with the contour map of groundwater
table can be draped with groundwater potential map. The groundwater
table usually found flat over the regions of higher groundwater
potential zones. Thus, with the increasing demography along with rising
demand the wells should be laid over the area with higher potential. The
remote sensing and GIS can be efficiently and smoothly used to determine
the groundwater potential zones with suitable sites for well
construction. Keywords: Groundwater sustainability, Remote Sensing,
Geographic Information System, Thematic layers, Groundwater potential
map.