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Northwest Bangladesh is one of the most water stressed regions of the country. All the rivers and channels of the area dry up during the dry season and make the people completely dependent on groundwater. Cultivation of dry season rice which is the lifeline of the livelihood of the region completely relies of groundwater supply. Prolonged absence of groundwater within the operating range of shallow tube-wells during the dry season is a growing concern in the area. It is anticipated that climate change will aggravate the situation in near future.This book discusses probable changes in the...

Shallow unconfined aquifer is one of the major sources for drinking and irrigation in many countries of the world. Groundwater contamination by nitrate is a major problem in the area having intensive agricultural or farming activities. A two-dimensional steady-state solute transport model has been developed in this study to simulate movement of non-point sources of Nitrate pollution in heterogeneous porous media. A Matlab code has been developed to solve the groundwater flow and solute transport equations by using finite difference methods. The proposed solute transport model is used to...