Abstract
The analysis of hydrochemical data plays an important role in understanding the contamination, migration and designing the remedial measures . Kandukuru Vagu basin – a sub basin of Aler river forms a part of Nalgonda (Dt) A.P , India , is mainly occupied by granites and gneisses of Archean age intruded by dolerite dykes and quartz veins . In the area the groundwater quality being threatened by the increase in area and intensity of agriculture , urban and the agro based industrial wastes . As a result greater attention is being drawn to ground water resources evaluation and better understanding of hydrogeochemistry of ground water in Kandukuru Vagu basin .To know the spatial and temporal variation of concentration of elements in the ground water , water samples were collected during pre and post monsoon periods i.e. for one hydrological cycle in the year 2007 , and analyzed for 38 elements as per the standard procedures given in (APHA ,1995) .The factor analysis were carried out by XLSTAT software and the resulting factor scores were spatially analyzed using ArcGIS V.9.2 software . The results of factor analysis for geochemical parameters of ground water samples for pre and post monsoon are given in the form of factors loading values , biplot diagrams and the spatial distribution maps of the factor scores . The possible explanation of high correlation of elements of different water types my be due to the difference in chemical composition of bed rocks and soil . Further , the variation in the concentration of elements between different water types suggest that the hydrological controls such as , flow path length , recharge from different areas , duration of contact or resident time with the different rock types and influence of infiltration of fertilizer from the agricultural fields , has over all implication on the observed variation in the hydrochemical facies of the ground water .
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* Dept.of Geography ,Education College ,al-Mustansiriyah University ,Baghdad ,Iraq (presently working for Ph.D programme in the department of Geology, UCS, OU , under ICCR exchange programme)
Key words : Kandukuru Vagu basin , Factor analysis , GIS , Factor scores , Factor loading , hydrogeochemical characteristics , ground water .
Ayad Ali Faris * , Y.Sudhakar Reddy
Dept. of Geology , University College of Science ,Osmania University
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