Variation in groundwater levels and water quality in Chhatna Block, Bankura district, West Bengal — a GIS approach

Ground water levels and quality in Chhatna Block of West Bengal were studied based on different indices for irrigation and drinking purposes. A detailed hydrogeological investigation was carried out to have an overall idea of the aquifer system of the area. The ground water occurs under shallow to m...

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Bibliographic Details
Published in:Journal of the Geological Society of India 2013-02, Vol.81 (2), p.261-280
Main Authors: Nag, S. K., Ghosh, P.
Format: Article
Language:English
Subjects:
Adsorption
Aquifer systems
Chemical analysis
Deep water
Earth and Environmental Science
Earth Sciences
Electrical resistivity
Geographic information systems
Geology
Groundwater
Groundwater flow
Groundwater levels
Hydrogeology
Irrigation
Irrigation water
Magnesium
Mathematical analysis
Research Article
Sodium
Toxicity
Water quality
Water table
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Summary:Ground water levels and quality in Chhatna Block of West Bengal were studied based on different indices for irrigation and drinking purposes. A detailed hydrogeological investigation was carried out to have an overall idea of the aquifer system of the area. The ground water occurs under shallow to moderately deep water table condition. The groundwater is stored mostly in the weathered residuum and fractured — hard rock. Sodium absorption ratio (SAR), soluble sodium percentage (SSP), residual sodium bi-carbonate (RSBC), electrical conductance (EC), magnesium adsorption ratio (MAR) Kelly’s ratio (KR), total hardness (TH), permeability index (PI) were calculated as derived parameters, to investigate the ionic toxicity. From the results of chemical analysis, it was revealed that the values of Sodium Adsorption Ratio indicate that, ground water of the area falls under the category of low sodium hazard. So, there was neither salinity nor toxicity problem of irrigation water, and hence the ground water can safely be used for long-term irrigation. Plotting of analytical results of the groundwater collected from different areas in Piper’s trilinear diagram (1944) indicate that, the waters of the study area fall under fresh and sulphate rich region of the rhombus.
ISSN:0016-7622
0974-6889
DOI:10.1007/s12594-013-0029-3