naa a22 4500 51075581X CHVBK 20180411083122.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s12594-013-0029-3 doi (NATIONALLICENCE)springer-10.1007/s12594-013-0029-3 Variation in groundwater levels and water quality in Chhatna Block, Bankura district, West Bengal — a GIS approach [Elektronische Daten] [S. Nag, P. Ghosh] 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. Geological Society of India, 2013 Sodium adsorption ratio nationallicence Residual sodium carbonate nationallicence Total hardness nationallicence Magnesium adsorption ratio nationallicence Kelly's ratio nationallicence Piper's diagram nationallicence West Bengal nationallicence Nag S. Department of Geological Sciences, Jadavpur University, 700 032, Kolkata, India aut Ghosh P. Department of Geological Sciences, Jadavpur University, 700 032, Kolkata, India aut Journal of the Geological Society of India Springer-Verlag 81/2(2013-02-01), 261-280 0016-7622 81:2<261 2013 81 12594 https://doi.org/10.1007/s12594-013-0029-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12594-013-0029-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nag S. Department of Geological Sciences, Jadavpur University, 700 032, Kolkata, India aut NATIONALLICENCE 700 1- Ghosh P. Department of Geological Sciences, Jadavpur University, 700 032, Kolkata, India aut NATIONALLICENCE 773 0- Journal of the Geological Society of India Springer-Verlag 81/2(2013-02-01), 261-280 0016-7622 81:2<261 2013 81 12594 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer