IDENTIFICATION OF SITES FOR GROUNDWATER RECHARGE STRUCTURES BY MAPPING OF LINEAMENTS AND STREAM NETWORKS
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Date
2021
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COLLEGE OF AGRICULTURAL ENGINEERING AND TECHNOLOGY ANAND AGRICULTURAL UNIVERSITY GODHRA
Abstract
Groundwater is a dynamic and replenishable natural resource. It is also valuable
resource for drinking, domestic, livestock use, and irrigation, especially in arid and semiarid
regions. The present study investigates the groundwater recharge potential zone as well as
to identify potential sites for Groundwater recharge structures using integrated remote
sensing (RS), geographical information system (GIS) and multi-criteria decision analysis
(MCDA) techniques for augmenting groundwater resources in the Panam basin, middle
Gujarat region, India, which has been facing water shortage problems for the past few years.
The methodology was implemented at a large catchment scale in Panam Basin with an area
of 2348 sq. km. The factors which influence the groundwater recharge are: Lineament
density, Stream density, Runoff, Slope, LULC and Soil, have been studied separately as well
as utilized to generate thematic layers to identify potential sites of groundwater recharge
structures, using GIS and remote sensing techniques. Different themes and their
corresponding features were assigned proper weights supported their relative contribution to
groundwater recharge within the territory, and normalized weights were figured by applying
the Saaty’s analytic hierarchy process (AHP). All the thematic layers have been reclassified
and integrated in GIS environment with application of overlay technique to delineate
groundwater Recharge Potential zones and identify potential sites.