eng Ansari Education and Research Society Journal of Ultra Chemistry 0973-3450 2319-8036 June 2006 2 2 157 172 juc 821 article Prasanna M.V. 1 Chidambaram S 1 Srinivasamoorthy K 1 Anandhan P. 1 John Peter A 1 Department of Earth Sciences, Annamala University, Ammamalai Nagar (T.N.) 608002 (NDIA) <p style="text-align: justify;">This paper describes the results of hydrogeochemistry to generate baseline information on hydrochemical evolution of the groundwater is related to the flow path of groundwater. The Gadilam River Basin in Tamilnadu is characterized by different geological formations like, and groundwater is the major source for domestic,&nbsp; agriculture&nbsp; and&nbsp; other&nbsp; water-related&nbsp; activities.&nbsp; The&nbsp; chief hydrogeochemical facies of the groundwater is Na-Cl. The waters are subjected to evaporation or evapotranspiration process tends to remove ions from the waters for formation of new clay minerals and precipitation of CaCO3. Comparison of river water with the groundwater reveals that recharge of river water into the groundwater system during post monsoon period. The study with mixing model exhibits higher percentage of mixing of parent solution in the North West part of the study area.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br /> &nbsp;</p> https://journalofchemistry.org/paper/821/ Hydrogeochemistry Groundwater Mixing Gadilam river basin