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|Title:||GROUNDWATER FLOW MODELING IN LOWER PART OF BHAGIRATHI-)ALANGI INTERFLUVE, NADIA, WEST BENGAL|
GROUNDWATER FLOW MODELING
LOWER PART BHAGIRATHI
|Abstract:||Groundwater utilization in Nadia district, West Bengal has been resorted to exploitation rapidly in the wake of increasing urbanization and production of agricultural commodities. It is, therefore, necessary to evaluate the existing trend and availability of groundwater in time and space and its movement for proper .planning in near future. In the present study, an attempt has been made to carry out `groundwater flow modeling in lower part of Bhagirathi-Jalangi interfluve, Nadia, West Bengal' using finite difference technique with the help of Visual MODFLOW 4.0 software. Modeling is an attempt to replicate the behavior of natural groundwater system by defining the essential features of the system in some controlled physical or mathematical manner. Visual MODFLOW is a computer program based on United States Geological Survey (USGS) MODLOW code with pre and post processor. It simulates three-dimensional ground-water flow through a porous medium by using a finite difference method. Groundwater flow within the aquifer is simulated using a block-centered finite-difference approach. The groundwater flow model for the study area was formulated by using input hydrogeological data and appropriate boundary conditions. The groundwater flow pattern of the study area indicates the occurrence of base flow which feed both the rivers Bhagirathi and Jalangi throughout the year. The computed hydraulic heads were calibrated by comparing with observed groundwater level data for years 2004 to 2006 and verified with the data of 2007. The outcome of modeling shows that this model can be used for prediction purpose for the future years by updating input boundary conditions and hydrologic stresses during the preceding year. The model optimized daily unit draft of deep tube well as 556.50 m3/day and the same for shallow tube well as 41 m3/day keeping the existing tube well structures in u running condition and maintaining the present and recent-past trends of groundwater level. The model can be further improved if more spatial and temporal input parameters are available and can be incorporated into the model for more realistic characterization of groundwater flow. Keywords : groundwater; modeling; Bhagirathi; Jalangi; interfluve; Nadia; West Bengal; finite difference; Visual MODFLOW; base flow; prediction; boundary conditions|
|Appears in Collections:||MASTERS' DISSERTATIONS (Hydrology)|
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