Assessment of Ground Water Potential Zones in Lower Arvathy 2 Watershed, Bengaluru Urban Area Using GIS and Remote Sensing Techniques
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Date
2017-08-16T11:41:05Z
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Abstract
Increased demand of water in different sectors and restriction of water
resources, necessitate the assessment of groundwater potential zones. Present
study is carried out to assess potential groundwater zone and to identify
groundwater potential sites in the Lower Arkavathy-2 watershed, Bengaluru
Urban District of Karnataka State due to acute shortage of potable water, using
Remote Sensing (RS), Geographical Information System (GIS), Multi-Criteria
Decision Analysis (MCDA) technique and Weightage Sum Raster Overlay
Analysis (WSROA) technique. In this study different thematic layers were
prepared viz. drainage, lineament, geology, geomorphology, soil texture, soil
depth, land use/land cover, rainfall and slope for identification of groundwater
potential zones and potential groundwater recharge sites, which are generated in
the RS and GIS environment. The relative weights were assigned to different
thematic layers using Analytical Hierarchical Process (AHP). While
determining the weightage of the various parameters, expert opinions were
taken and the artificial groundwater potential zones and suitable sites for
groundwater recharge were deduced. In the present study, five categories of
groundwater potential zones were identified viz. very poor, poor, moderate,
good and very good according to their suitability of area for groundwater
recharge purposes.
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1Nh13CV0104, Civil Projects 2017, Projects Civil Engineering