ASSESSMENT OF GROUNDWATER QUALITY USING GEOGRAPHICAL INFORMATION SYSTEM IN THE GADILAM RIVER BASIN, TAMILNADU, INDIAM.v. Prasanna, S.Chidambaram, K.Vasu A. Shahul Hameed, C.Unikrishna Warrier, K. Srinivasamoorthy, S. Pethaperumal. A. John Peter' and P. Anandhan
To assess the portability of groundwater, major water quality parameters such as Total dissolved solids (TDS), Chloride (CI), Sodium (Nat) and Chloride vs. Bicarbonate (Cl/I-ICO,) ratio have been estimated for all the sampling locations. The estimated data of forty one locations for each parameter have been converted into contour maps by using Geographical Information System (GIS) software (Surfer, version 6). The chemical parameters have been integrated through GIS and two priority classes good and poor have been derived. In the study area only a few fresh water pockets have been identified.
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