Pollution of arsenic in groundwater is a major problem in aquifers of Ganga delta in West Bengal, India. Consequently arsenicosis disease is one of the vital issues of public health in this region. In this aspect, determination of the spatial distribution of vulnerable zones for arsenic pollution in groundwater is essential to provide a better public health condition. Detailed study of concentration of arsenic in groundwater is studied spatially to get the hot-spot of such arsenic pollution in Malda district of West Bengal, India. Thematic maps of geomorphology, land-use, palaeo-channels and lithology are studied in details. Spatial correlation of these thematic parameters and distribution of hot-spots of arsenic pollution reveals close association of arsenicosis with newer and recent alluviums in such region. It is further influenced by presence of palae-channel to the proximity of newer alluviums. The study indicates the close spatial correlation of arsenicosis with the newer alluvium and palaeo-channels in the Ganga delta region of West Bengal, India. Such regions in the whole Ganga delta may be considered as the vulnerable zone to arsenicosis. These zones are susceptible to public health condition and close comprehensive monitoring of groundwater quality might provide better public health condition in Ganga deltaic region.
Keywords: Data processing, Data assimilation, Hydrogeology, Remote Sensing, Geographical Information Science & Systems, Geomorphology, Medical Geology.