Ganges River Flow Benefits for Bangladesh †How to Estimate It?

Ganges River Flow Benefits for Bangladesh How to estimate it? Zaman A. M. , Haque A. K. E. , Rahman S. M. M. , Mohiuddin F. A. Abstract For scotch modeling in the Ganges Basin, an estimate of the water demand in the Ganges Dependent Area (GDA) in Bangladesh is required. This paper outlines a order for estimating this water demand. The proposed method is based on the integration of hydrological and hydraulic litigate models with scotch models.In Bangladesh, a variety of mathematical models are soon used to estimate the impacts on Bangladeshs water resources system for contrary upstream full stop conditions, local hydrologic situations, Bay of Bengal circumstances, etc. The models include watershed level hydrological models, 1-dimensional and 2-dimensional hydrodynamic models, morphological model, salinity model, Bay of Bengal model, etc. The starting step in the proposed method it to use these models to simulate a simulacrum of hydrologic and hydraulic scenarios in the GDA in Bangladesh.The next step involves using the outputs from these natural process models as inputs to economic models that estimate the economic expediencys (and costs) in the GDA. These economic models lead focus on different sectors that can potentially benefit from additional freshwater flows to the region, e. g. irrigated agriculture, open-water and capture fisheries, navigation, ecosystem services (particularly the Sundarbans), dredging of river channels, water logging in polder areas, water supply, etc.For example, currently at that place is practically no flow into the Gorai River, a key river in the GDA, from the Ganges during the months of January to May. As a result, there is increased river salinity and sedimentation in the southwest region. Additional flows will not only allow increased agriculture production and repair water supply options but also reduce the costs of continuous dredging of key rivers in the region. These estimated benefits represent economic wate r demands for the GDA in Bangladesh.