Abstract
The international hydrological community is addressing problem of scarcity of water and judicial and optimum groundwater development and sustainable management by the available knowledge and tool equipped. For the present study, an attempt has been made in understanding, the importance of different hydrogeological parameters, which control the groundwater potential of an area and finally characterization of the area into different groundwater potential zones. The study area is Kattankolathur block of Kanchipuram district, Tamil Nadu, Southern India, which extends over a geographical area of 378.536 sq. km. Different temporal satellite images and collateral data are used to prepare number of thematics for the analysis. Further these thematics by giving suitable weightage and assigning respective ranks using Multi Criteria Decision Making (MCDM) technique depending upon their control over groundwater potential are overlaid by using weighted overlay analysis tool available with ArcGIS and the final groundwater potential map has been prepared. By performing this multi criteria analysis, the area is categorized into different classes’ viz., Very poor, poor, moderate, good and very good groundwater potential zones. The study shows 101.448 sq. km and 152.172 sq. km of very poor to poor groundwater potential, whereas 83.277 sq. km of the area is coming under moderate potential zone. The rest area, 27.76 sq. km. is coming under good and only 13.879 sq. km found to be under very good groundwater potential zone. Different sample locations are been considered over the area and the water level has been collected from different control wells for pre and post monsoon periods and validated. Ares namely Palur Villampakkam, Attur, Timmenpuram and Chengalpattu Shows high groundwater potential and less populated. In the contrast areas like Paranur, Singaperumal Koil, Marammalai Nagar, Potheri, Guduvanchery, and Vandalur are highly populated and industrialized and are coming under moderate to very poor potential zones.
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