ABSTRACT
South and Southeast Asia is considered as the most vulnarable zone for environmental disasters among which elevated levels of arsenic (As) is the most threatening for human life. The largest fluvio deltaic basin of the world, The Bengal delta plain occupies most of Bangladesh and West Bengal drained by Ganges, Jamuna and Meghna river system. The Holocene alluvial aquifers of this fluvio-deltaic basin is extremely affected by high levels of As which comes to the groundwater as a natural contaminant and shows significant relationship with the geology and hydrogeology (Ahmed et al. 2004) of the basin. The Meghna floodplain is characterized by heterogeneous fluvial landforms that apparaently show close relation to the As distribution in groundwaters of the area. Matlab is located at the confluence of the Meghna basin and severely affected by geogenic As. The present study is focused on the identification of the landforms through visual interpretation of Google Earth images in two areas of North and South Matlab and their relation with the distribution of As in the aquifers of this study area (Fig. 1).
