Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Drinking and Irrigational Feasibility of Groundwater, GIS Spatial Mapping in Upper Thirumanimuthar Sub-Basin, Cauvery River, Tamil Nadu


Affiliations
1 Department of Earth Sciences, Annamalai University, Annamalai Nagar - 608 002, India
2 CGIT, School of Geosiences, Bharathidasan University, Tiruchirappalli - 620 024, India
3 Department of Ocean Sciences and Marine Geology, Pondicherry University, Andaman, India
4 Department of Geology, National College, Trichy, Tiruchirappalli - 620 001, India
     

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In the present study, the chemical characteristics of groundwater with respect to drinking and Irrigation water quality in upper Thirumanimuthar sub-basin, Cauvery River, have been studied. 51 groundwater samples were collected and analysed for pH, conductance, total dissolved solids, total hardness, calcium, magnesium, carbonate, bicarbonate, total alkalinity, chloride, sodium, potassium, sulphate etc. The values analyzed were evaluated in detail and compared with WHO water quality standards. It is observed that, for most of the groundwater quality parameters, the values are not potable for drinking and irrigational use. To understand the spatial distribution of unsuitable zones, ArcGIS was employed. Attributes were linked and spatial interpolation mapping was done. Inverse distance weighted interpolation technique was followed for raster and vector mapping. Finally the overlay analyses were also carried out to locate the worst quality zone.

Keywords

SAR, Sodium Percentage, GIS, Spatial Distribution Map, Overlay Analysis, Cauvery River, Tamil Nadu.
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  • Drinking and Irrigational Feasibility of Groundwater, GIS Spatial Mapping in Upper Thirumanimuthar Sub-Basin, Cauvery River, Tamil Nadu

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Authors

M. Suresh
Department of Earth Sciences, Annamalai University, Annamalai Nagar - 608 002, India
B. Gurugnanam
Department of Earth Sciences, Annamalai University, Annamalai Nagar - 608 002, India
S. Vasudevan
CGIT, School of Geosiences, Bharathidasan University, Tiruchirappalli - 620 024, India
K. Dharanirajan
Department of Ocean Sciences and Marine Geology, Pondicherry University, Andaman, India
N. Jawahar Raj
Department of Geology, National College, Trichy, Tiruchirappalli - 620 001, India

Abstract


In the present study, the chemical characteristics of groundwater with respect to drinking and Irrigation water quality in upper Thirumanimuthar sub-basin, Cauvery River, have been studied. 51 groundwater samples were collected and analysed for pH, conductance, total dissolved solids, total hardness, calcium, magnesium, carbonate, bicarbonate, total alkalinity, chloride, sodium, potassium, sulphate etc. The values analyzed were evaluated in detail and compared with WHO water quality standards. It is observed that, for most of the groundwater quality parameters, the values are not potable for drinking and irrigational use. To understand the spatial distribution of unsuitable zones, ArcGIS was employed. Attributes were linked and spatial interpolation mapping was done. Inverse distance weighted interpolation technique was followed for raster and vector mapping. Finally the overlay analyses were also carried out to locate the worst quality zone.

Keywords


SAR, Sodium Percentage, GIS, Spatial Distribution Map, Overlay Analysis, Cauvery River, Tamil Nadu.