Study on groundwater recharge potentiality of Barind Tract,Rajshahi District,Bangladesh using GIS and Remote Sensing technique |
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Authors: | M I Adham C S Jahan Q H Mazumder M M A Hossain Al-Mamunul Haque |
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Institution: | (1) Department of Geography, University College London, Gower Street, London, WC1E 6BT, UK;(2) Department of Geology, University of Dhaka, Curzon Hall Campus, Dhaka, 1000, Bangladesh;(3) Bangladesh Water Development Board, 72 Green Road, Dhaka, 1205, Bangladesh |
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Abstract: | The groundwater recharge potentiality in Barind Tract in Rajshahi district, Northwest Bangladesh was studied based on Geographical
Information System (GIS) and Remote Sensing technique. In this connection satellite images (Landsat 7 ETM and SPOT) and aerial
photos were subjected to several treatment processes using softwares like ERDAS Imagine and ESRI’s Arc View. Thus various
thematic maps have been prepared for drainage density, lineaments, lithology and land cover/use that allowed deciding their
interactive effect. In the present study, the degree of effect was determined for each factor to assess the total groundwater
recharge potentiality for two categories (moderate to low). The resultant map shows that 85% of the area has low, and rest
has moderate groundwater recharge potentiality. Finally only 8.6% of the total average annual precipitated water (1685mm)
percolates into subsurface and ultimately contributes to recharge the groundwater. |
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Keywords: | |
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