*Assosciate Professor, Dept. Of Civil Engineering, East Point College of Engineering and Technology
**HOD & Professor, Dept. Of Civil Engineering, East Point College of Engineering and Technology, Bangalore
***GIS Consultant, Vimatraya Geospatial Technological solutions
Online published on 22 January, 2015.
Groundwater is attracting an ever increasing interest due to scarcity of good quality subsurface water, and growing need of water for domestic, agricultural and industrial uses. It has become crucial not only to target groundwater potential zones, but also to monitor and conserve this important resource. In this project, an attempt has been made to study the groundwater profile and to determine its suitability for human consumption (as per IS 10500: 2009) using the various tools of Geographic Information System (GIS).A study area has been selected under Bangalore East Taluk, spanning over 100 km2, roughly in the shape of a quadrilateral having coordinates (13º14’58.95”N, 77º40’0.06”E), (13º5’13.12” N, 77º46’53.54”E), (12º58’41.56” N, 77º46’47.62”E), (12º58’56.59”N, 77º40’0.38”E). Around 160 samples of groundwater have been collected from borewells and open wells within the study area, and they have been tested for parameters such as Total Hardness, Total Alkalinity, pH, Total Dissolved Solids and Fluorides. Also, information about the depth of water in the wells and their year of construction has been collected in order to analyse the change in the profile of groundwater over the years. These data have been then fed into a GIS spatial database and suitably interpolated statistically using GIS tools and softwares, and the final output has been shown in the form of groundwater quality maps. These maps have proved to be very effective in discerning groundwater potential zones, and can act as a basis for planning and execution of groundwater exploration.
Groundwater, groundwater profile, GIS, groundwater quality maps, statistical interpolation, groundwater potential zones
