This study aimed at characterization of surface as well as subsurface hydrological conditions in a hard-rock terrain, morphed under the influence of neotectonic activity, associated with tensional type of faulting. The area selected lies in vicinity of an active fault, with quartzitic rocks showing signs of multiple folding. Associated tear faults in adjoining areas have also been observed. The information thus obtained was correlated with geological information derived from hyperspectral satellite imagery with geochemical and petrological analyses performed to verify the same. Influence of faulting activity on regulating water flow on surface as well as groundwater was studied. For surface water bodies hydrological analysis on elevation data (DEM) was performed whereas for subsurface recharge, margins of geological units were targeted. This was confirmed by actual field geophysical (resistivity) surveys at suitable strategic locations. The relative influences of structural lineaments on regulating subsurface water storage were also determined. Also, the role of faulting activity in regulating connectivity between multiple aquifers and surface water bodies was studied using the GIS analysis outputs. The resulting database in GIS platform can also be used for flow modeling and aquifer potential / vulnerability studies.
Preferred Presentation Type: Oral